KR101062976B1 - System for preventing spill of the data stored in the lost smart phone and method for preventing thereof - Google Patents

Abstract

The present invention relates to a system and method for preventing the leakage of information stored in a lost smartphone, and in particular, when there is a loss reception for a smartphone registered in a service server, by sending an emergency mode message to the corresponding smartphone. By preventing access to the protected directory stored on the phone and simultaneously transmitting the information stored in the protected directory to a remote database server, by blocking access to all directories stored on the smartphone, important information stored on the smartphone is transferred to the outside. The present invention relates to a system and method for preventing leakage of information stored in a lost smartphone that can effectively prevent leakage.
The constituent means constituting the leakage prevention system of the present inventors lost information is a service server for transmitting an emergency mode message to the smartphone when the smartphone is received as lost, when the emergency mode message is received. Only a predetermined control module permits access to the protected directory, and according to the control of the control module, the smartphone which performs the locking on all directories after transmitting the information of the protected directory to be backed up to the database server And a database server for backing up and storing the information of the protected target directory transmitted from the smartphone.

Description

System for preventing spill of the data stored in the lost smart phone and method for preventing}

The present invention relates to a system and method for preventing the leakage of information stored in a lost smartphone, and in particular, when there is a loss reception for a smartphone registered in a service server, by sending an emergency mode message to the corresponding smartphone. By preventing access to the protected directory stored on the phone and simultaneously transmitting the information stored in the protected directory to a remote database server, by blocking access to all directories stored on the smartphone, important information stored on the smartphone is transferred to the outside. The present invention relates to a system and method for preventing leakage of information stored in a lost smartphone that can effectively prevent leakage.

Smartphones are the next generation of mobile phones with functions such as Internet information retrieval and picture information transmission and reception. It can be used for internet communication and fax transmission while on the go, and is widely used as a portable computer with personal information management function.

Since the smart phone performs a portable computer function, a smart phone user stores various important programs and data in a smart phone directory, accesses and uses the directory whenever necessary, and performs an update.

Therefore, since the smart phone stores a large amount of high-level information used for personal or business purposes, much attention should be paid to external leakage. In particular, when the smartphone storing the advanced information is lost, when the advanced information of the smartphone is destroyed or leaked by the learner, a great damage more than the financial loss occurs.

Therefore, when the smart phone storing the advanced information is lost, it is necessary to prevent the enormous damage caused by the leakage of the advanced information in advance, there is a situation that has not been proposed to prevent this in reality.

The present invention was devised to solve the above problems, and when there is a loss reception for a smartphone registered in a service server, by sending an emergency mode message to the smartphone, the protected directory stored in the smartphone. By preventing access and transmitting information stored in the protected directory to a remote database server, blocking access to all directories stored on the smartphone, effectively preventing important information stored on the smartphone from leaking to the outside. It is an object of the present invention to provide a system and method for preventing leakage of information stored in a lost smartphone.

The constituent means constituting the leakage prevention system of the information stored in the present inventors lost smartphone proposed to solve the above problems, a service for transmitting an emergency mode message to the smartphone when the smartphone is received as lost When the server receives the emergency mode message, only a predetermined control module allows access to the protected directory, and under control of the control module, transmits the information of the protected directory to be backed up to a database server. A smart phone performing locking on all directories, and a database server for backing up and storing information on a directory to be protected transmitted from the smart phone.

In addition, the smart phone, the emergency mode check module for periodically sending an emergency mode check message to the service server under the control of the control module, when it is confirmed that the smartphone is lost by the emergency mode check module And a backup module for transmitting the information of the protected directory to the database server under the control of the control module.

The smart phone may further include a location tracking module for periodically transmitting location information of the smart phone to the service server under the control of the control module.

The control module may be configured to control only the location tracking module to be driven after the smartphone is confirmed to be in a lost state and the information of the protected directory is transmitted to the database server.

In addition, the control module may drive the backup module whenever there is a change of the directory to be protected or at a preset backup period, except when the smartphone is confirmed to be in a lost state. And control to be transmitted to the database server.

In addition, when the smartphone is determined to be turned on after the SIM is replaced or detached except for receiving the emergency mode message, only the predetermined control module allows access to the protected directory. In addition, according to the control of the control module, after transmitting the information of the protected directory to be backed up to the database server, it characterized in that the locking for all directories.

The constituent means constituting the method of preventing leakage of information stored in the lost smartphone of the present inventors, the emergency mode check step of periodically sending a confirmation message whether the smartphone registered in the service server to the service server, the service server Transmitting an emergency mode status message to the smartphone in response to the emergency mode confirmation message; when the emergency mode status message is an emergency mode message corresponding to a lost smartphone, the protected directory stored in the smartphone; Characterized in that it comprises a step of protecting the information backed up and stored in the database server so that the information of the leak.

In addition, the smart phone registered in the service server is characterized in that further transmitting the location information of the smart phone periodically to the service server in addition to the emergency mode confirmation message.

In addition, the information protection step, if the emergency mode message is received, locking the protected directory to be accessed only by the control module, the step of transferring the protected directory to the database server to back up, the smart phone In order to prevent access to all the directories stored in the characterized in that it comprises the step of performing additional locking.

In addition, after performing the additional locking, the smart phone does not perform the emergency mode check step and the information protection step any more, characterized in that periodically transmitting only the location information of the smart phone to the service server. do.

In addition, the process of performing the additional locking is characterized in that it comprises a process of blocking the input and output function, the network connection function and the communication function.

In addition, the process of performing additional locking to prevent access to all the directories stored in the smartphone is characterized in that the process of destroying all the directories stored in the smartphone.

The control module may be configured to control the protected directory to be backed up to the database server whenever there is a change of the protected directory or at a preset backup period even if the emergency mode message is not received.

In addition, when the smartphone is determined to be turned on after the SIM is replaced or detached except for receiving the emergency mode message, only the predetermined control module allows access to the protected directory. In addition, according to the control of the control module, after transmitting the information of the protected directory to be backed up to the database server, it characterized in that the locking for all directories.

According to the present invention and a method for preventing leakage of information stored in a lost smartphone having the above-described problems and solutions, the emergency mode in the smartphone when there is a loss reception for the smartphone registered in the service server By sending a message to prevent access to the protected directory stored on the smartphone, while transmitting information stored in the protected directory to a remote database server, it blocks access to all directories stored on the smartphone. There is an advantage that can effectively prevent the leakage of important information stored in the outside.

In addition, even when the emergency mode message is not received by the smartphone, whenever the protected directory is changed or at a predetermined backup cycle, the information of the protected directory is backed up, thereby protecting important information before the smartphone is lost. There is an advantage to this.

In addition, even after the emergency mode message is received by the smartphone to back up the information of the protected directory, since the smartphone periodically transmits the location information to the service server, it is possible to continuously identify the location of the lost smartphone. have.

1 is a block diagram of a system for preventing leakage of information stored in a lost smartphone according to an embodiment of the present invention.
2 is a flowchart illustrating a method of preventing leakage of information stored in a lost smart phone according to an exemplary embodiment of the present invention.
3 is a configuration diagram illustrating a relationship between components for performing a method for preventing leakage of information stored in a lost smartphone according to an embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings will be described in detail with respect to the system of preventing the leakage of information stored in the present inventors lost smartphone having the above problems, solving means and effects and the constituent means constituting the method.

1 is a block diagram of a system for preventing leakage of information stored in a lost smartphone according to an embodiment of the present invention.

As shown in Figure 1, the constituent means of the system for preventing the leakage of information stored in the lost smartphone according to an embodiment of the present invention is composed of a service server 10, database server 20 and the smart phone 30 It is.

When the smart phone 30 is lost, the service server 10 controls the smart phone 30 remotely to quickly prevent the information stored in the smart phone 30 from being leaked or used. .

The service server 10 manages the members using the leakage prevention system of the information stored in the lost smartphone 30, and if the smartphone 30 of the members is received as lost quickly the lost smartphone ( Send an emergency mode message to the lost smart phone 30 to prevent the information stored in the 30 is leaked or used.

Smartphone users who want to use the leakage prevention system of the information stored in the lost smartphone 30 of the inventors can register as a member in the service server 10, and use the service as the driving software installed in the smartphone manufacturing step. . In other words, the driving software is already installed in the smart phone manufacturing step, the smart phone user can register the member to the service server 10 to use the service.

The driving software is already installed from the manufacturing stage of the smart phone 30, and is always automatically driven when the smart phone 30 boots to periodically perform data communication with the service server 10.

As will be described later, the driving software is executed in the smart phone 30 to periodically perform data communication with the service server 10 and protect the protected directory according to the presence of the emergency mode message of the service server 10. Perform a locking operation to perform the backup operation for transmitting the information of the protected directory to the database server 20, and after performing the backup operation, all directories of the smartphone 30 are stored. Perform additional locking to prevent access.

As such, when the user of the smart phone 30 only registers the member to the service server 10 and sets only the ID and password registered in the driving software, the user of the smart phone 30 boots the present invention. The system for preventing the leakage of information stored in the phone 30 may operate normally.

The service server 10 periodically checks whether there is a loss reception for the smartphone 30 of the registered user. When a user of a smartphone registered as a member of the service server 10 loses his or her smartphone 30, a loss reception is performed to the service server 10. The lost reception method may be possible using the Internet, or may use wired or wireless communication.

As such, when the user of the smart phone 30 registered as a member of the service server 10 loses the smart phone 30 and receives the loss to the service server 10, the service server 10 may perform the smart. The emergency mode message is transmitted to the phone 30.

That is, when the smart phone 30 is received as lost, the service server 10 transmits an emergency mode message indicating that the smart phone 30 is lost to the smart phone 30.

Of course, the smartphone 30 periodically transmits an emergency mode check message to the service server 10 before it is lost. That is, in order to check whether the smartphone 30 itself is in a lost state, periodically, whether the emergency mode confirmation message is transmitted to the service server 10.

The service server 10 receiving the emergency mode check message is an emergency mode message informing the lost state when the corresponding smartphone 30 is in a lost state (when there is a loss reception from the corresponding smartphone user). To transmit to the smart phone 30, if not in the lost state transmits a normal mode message to the smart phone (30).

When the smart phone 30 transmits an emergency mode check message to the service server 10, the smart phone 30 also transmits its location information so that the service server 10 can continuously grasp its location information. By transmitting the location information of the smart phone 30 as described above, even if the smart phone 30 is lost, it is possible to continuously determine the location of the lost smart phone 30.

When the smart phone 30 receives the normal mode message from the service server 10, the smart phone 30 is not lost and the user normally holds the smart phone 30. The phone 30 continuously transmits the emergency mode confirmation message and its location information to the service server 10 without performing another additional operation.

On the other hand, if the smart phone 30 receives an emergency mode message corresponding to the loss of the smart phone 30 from the service server 10, the pre-installed driving from the manufacturing step of the smart phone 30 The software operates to quickly protect and back up important information stored in the smartphone 30.

Specifically, when the smart phone 30 receives the emergency mode message from the service server 10, a locking operation in which only a predetermined control module 31 permits access to the protected directory. And, under the control of the control module 31, and transmits the information of the protected directory to be backed up to the database server 20, when this backup is completed, to all directories stored in the smartphone 30 Perform additional locking that is not accessible.

The pre-designated control module 31 is a pre-designated process that can uniquely access the protected directory when an emergency mode message is input from the service server 10. Therefore, when the emergency mode message is input, the control module 31 does not allow other processes or the like to access the protected directory, so that only the user can access it. The protected directory may be accessed only by the predetermined control module 31 in a file system filter drive in Windows Mobile and in a file system permission mode in embedded Linux.

The protected directory may be designated by the user of the smartphone 30, and the designated protected directory may be changed or added by the user of the smartphone 30. As will be described later, when the protected directory is changed or added, the control module 31 recognizes the change or addition of the protected directory, and the changed or added protected directory is backed up to the database server 20. To be controlled.

The smart phone 30 including the control module 31 includes modules in which the above-described protected directory is safely protected and backed up when an emergency mode message is input from the service server 10.

Specifically, as shown in FIG. 1, the smartphone 30 includes a control module 31, an emergency mode inspection module 33, a backup module 35, and additionally a location tracking module 37. It is made to include more.

When the emergency mode message is input from the service server 10, the control module 31 drives the file system filter drive or the file system permission mode to access the protected directory so that the protected directory can be accessed only by the control module 31. Locking, and controls the protected directory to be backed up, and when the backup is completed, controls all directories of the smartphone 30 is additionally locked.

The emergency mode inspection module 33 periodically transmits an emergency mode check message to the service server 10 under the control of the control module 31. The emergency mode check message is a message for checking whether the smart phone 30 is in an emergency mode state because it is lost or in a normal mode state because it is not lost.

As such, when the emergency mode inspection module 33 transmits the emergency mode check message to the service server 10, the service server 10 responds to the emergency mode message or the emergency mode message. The mode status message is transmitted to the emergency mode inspection module 33 of the smart phone 30. For example, when the smartphone 30 is lost, the value "1" is transmitted to the emergency mode inspection module 33 as an emergency mode message. Otherwise, the value "0" is transmitted as the normal mode message. Transmission to the emergency mode inspection module 33.

The emergency mode inspection module 33 receiving the emergency mode status message from the service server 10 transmits the result to the control module 31. That is, the emergency mode inspection module 33 analyzes the emergency mode status message and informs the control module 31 of whether the smartphone 30 is in a lost state or not.

When the control module 31 is received from the emergency mode inspection module 33 as being in the lost state of the smart phone 30 (the emergency mode inspection module 33 is emergency from the service server 10) When the mode message is received), the backup module 35 is controlled to be driven.

Then, the backup module 35 transmits the information of the locked protected directory to the database server 20 to be backed up. That is, when the backup module 35 determines that the smart phone 30 is lost by the emergency mode inspection module 33, the information on the protected directory under the control of the control module 31 is determined. Is transmitted to the database server 20 to be backed up.

As the backup module 35 is driven as described above, when the information of the protected directory is transmitted to the database server 20 and the backup is performed, the control module 31 is included in the smart phone 30. Additional locking is performed on every directory in the directory, thereby preventing access to any directory on the smartphone.

As such, when the smart phone 30 receives an emergency mode message indicating that it is in a lost state from the service server 10, the smartphone 30 preferentially locks a protected directory, and locks the locked protected directory to the database server. When the backup is transmitted to the 20 and the backup is completed, by additionally performing locking on all directories of the smart phone 30, the lost smart phone 30 is automatically controlled to be useless.

According to the operation as described above, important information stored in the lost smart phone 30 can be protected first by backing up and securely stored in the database server 20, and locking on all directories of the smart phone 30. By additionally performing, it can be prevented from being used by third parties (learners of lost smartphones).

Then, the user of the lost smartphone 30 will want to recover the lost smartphone 30, for this purpose it must be able to continuously identify the location of the lost smartphone (30). Therefore, the smart phone 30 is configured to further include a location tracking module 37 as shown in FIG.

The location tracking module 37 periodically transmits location information of the smartphone 30 to the service server 10 under the control of the control module 31. That is, before the smartphone 30 is lost, the smartphone 30 periodically transmits an emergency mode check message by the emergency mode inspection module 33 to the service server 10 as well as the The location information by the location tracking module 37 is periodically transmitted to the service server 10.

Thereafter, the smartphone 30 is lost, the protected directory of the smartphone 30 is locked, the information of the locked protected directory is backed up to the database server 20, and after the backup is completed, the smartphone ( When additional locking is performed on all directories of the 30, the emergency mode inspection module 33 and the backup module 35 described above are no longer driven, and only the position tracking module 37 of the control module 31 Driven by control.

That is, the control module 31 is determined that the smart phone 30 is in a lost state, and after the information of the protected directory is transmitted to the database server 20, only the location tracking module 37 is driven. Control as possible. Therefore, even when the smartphone 30 is lost, the smartphone 30 that is continuously lost periodically transmits its location information to the service server 10.

Therefore, the location of the lost smartphone 30 can be continuously tracked by the service server 10. That is, the user can continuously determine the location of his / her lost smartphone 30 by connecting to the service server 10 by various connection methods such as the Internet or a wired or wireless telephone.

Meanwhile, the control module 31 included in the smartphone 30 periodically checks whether the smartphone 30 is lost by controlling the emergency mode inspection module 33 as described above. When the smartphone 30 is found to be in a lost state, the protected directory is locked, and the information on the locked protected directory is backed up to the database server 20.

However, the control module 30 drives the backup module 35 to control the information of the protected directory to be backed up to the database server 20 in addition to the case where the smart phone 30 is confirmed to be in a lost state. There is a case.

In detail, the control module 31 drives the backup module 35 whenever there is a change of the directory to be protected or at a preset backup period regardless of whether the smartphone 30 is lost or not. Control the information of the protected directory to be transmitted to the database server 20.

That is, the control module 31 periodically checks whether the smartphone 30 is in a lost state, and periodically checks whether a change occurs in the directory to be protected. Therefore, when there is a change of the directory to be protected by the user, such as addition, deletion, correction, the control module 31 recognizes the change of the directory to be protected, and drives the backup module 35 to change the changed directory. Information of the directory to be protected may be transmitted to the database server 20.

In addition, even when the backup period for the protected directory is set in advance by the user, the control module 31 periodically checks whether the smartphone 30 is in a lost state, and at the same time, the preset backup. The backup module 35 is driven at each cycle so that the information of the protected directory can be transmitted to the database server 20.

In this way, regardless of whether the smartphone 30 is lost, by backing up the changed protected directory in advance or backing up the information of the protected directory at every preset backup period, even if the smartphone 30 is lost later. There is an advantage to recovering important information.

On the other hand, regardless of whether the smart phone 30 is lost, there is a case to perform the backup operation and the locking operation by the control module 31. That is, in the case of illegally leaking data from the smart phone 30, if a phone loss report is late or an illegal user who acquires a phone does not immediately change the SIM, information leakage about illegal theft cannot be prevented. Includes the case of performing a backup operation or the like irrespective of the loss report of (30).

Therefore, when the smartphone 30 determines that the smart phone 30 is turned on after the SIM is replaced or detached, in addition to the case where the smart phone 30 receives the emergency mode message, the control module 31 is previously designated. ) Only permits access to the protected directory, and under the control of the control module 31, transmits the information of the protected directory to be backed up to the database server 20, and performs locking on all directories. Do this.

Next, the leakage prevention method through the leakage prevention system of the information stored in the above-described lost smartphone will be described in detail.

2 is a flowchart illustrating a method of preventing leakage of information stored in a lost smart phone according to an exemplary embodiment of the present invention. This will be described in detail with reference to the following.

First, the present inventors subscribe to the service in order to use the leakage prevention system of the information stored in the lost smartphone 30 (s10), and the driving software is already in advance from the manufacturing stage of the smartphone 30 30) must be installed.

When the user registers with the service server 10 to subscribe to the service, an ID and password are given, and the driving software login information is set using the ID and password (S10). Thereafter, when the smart phone 30 is booted, the driving software is automatically executed to receive the service (a leakage prevention service of information stored in the lost smart phone).

When the driving software is driven in the smartphone 30, the smartphone 30 registered in the service server 10 periodically transmits an emergency mode confirmation message to the service server 10. The confirmation step is repeatedly performed (s20). Specifically, the emergency mode inspection module 33 periodically transmits the emergency mode confirmation message to the service server under the control of the control module 31 constituting the driving software.

Then, the service server 10 periodically receiving the emergency mode check message from the smartphone 30 determines whether there is a loss reception for the smartphone 30 (S30). After determining whether there is a loss reception for the smartphone 30, the service server 10 transmits an emergency mode status message to the smartphone 30 in response to the emergency mode confirmation message.

The emergency mode status message transmitted by the service server 10 to the smartphone 30 is one of an emergency mode message indicating that the smartphone is in a lost state or a normal mode message indicating that the smartphone is not in a lost state.

When the service server 10 determines that the smartphone 30 is in a lost state, the service server 10 transmits an emergency mode message to the smartphone 30 (S40). On the contrary, when it is determined that the smart phone 30 is not in a lost state, a normal mode message is transmitted to the smart phone 30 (S35).

When the smart phone 30 receives the normal mode message from the service server 10, the above-described emergency mode check step (s20) is repeatedly performed, and when the emergency mode message is received, the control module 31 Under the control of the) to perform the operation of locking the directory to be protected, the operation of backing up and additionally locking all directories of the smartphone (30).

On the other hand, the service server 10 stores the user information (such as ID and password) of the registered smartphone 30, the registered smartphone information (unique number, phone number, etc.). Therefore, when the smart phone 30 transmits an emergency mode confirmation message to the service server 10, the smart phone 30 naturally transmits a unique number or phone number information that can distinguish the smart phone 30.

Meanwhile, as will be described later, the smart phone 30 periodically transmits the location information of the smart phone 30 to the service server 10 through the location tracking module 37 separately from the emergency mode check message. Even in this case, when the location tracking module 37 of the smart phone 30 transmits the location information of the smart phone 30 to the service server 10, a unique number that can distinguish the smart phone 30. Or send phone number information together.

As a result, when the smartphone 30 is lost, the smartphone user receives the phone number or the unique number of the lost smartphone 30 together with the service server 10 in the process of receiving the loss, and then When the information (phone number or unique number, etc.) of the smartphone 30 is transmitted from the lost smartphone 30 together with the emergency mode check message (or location information of the lost smartphone), the service server 10 The smart phone 30 that transmits the emergency mode check message can be confirmed as a lost smart phone.

When the smartphone 30 transmitting the emergency mode check message is confirmed to be a lost received smartphone, the service server 10 sends an emergency mode message among the emergency mode status messages to the smartphone 30. send.

Then, when the smart phone 30 confirms that the emergency mode message is an emergency mode message corresponding to the lost smartphone, the database server so that the information of the protected directory stored in the smart phone 30 is not leaked. An information protection step (s50 to s70) to be backed up and stored at 20 is performed.

Meanwhile, while performing the above process, the smartphone 30 registered in the service server 10 periodically receives the location information of the smartphone 30 in addition to the emergency mode confirmation message. ) To transmit more. Specifically, under the control of the control module 31 of the smart phone emergency mode inspection module 33 periodically transmits an emergency mode confirmation message to the service server 10, the location tracking module 37 periodically The location information of the smartphone 30 is transmitted to the service server 10.

By periodically transmitting the location information of the smart phone 30 to the service server 10, even if the smart phone 30 is lost, the location of the smart phone 30 can be continuously tracked Thereby, the possibility of recovery of the lost smartphone 30 can be increased.

The information protection steps s50 to s70 will be described in more detail with reference to FIGS. 2 and 3 as follows. Figure 3 is an additional view for explaining the overall operation according to the smartphone lost reception.

When the emergency mode message is received from the service server 10, the control module 31 performs locking to prevent a predetermined directory to be protected from being accessed by a process other than itself. That is, the process of locking so that the protection target directory can be accessed only by the control module 31 is performed (S50). The control module 31 may drive the file system filter drive or the file system permission mode to lock the protected directory.

After locking the protected directory, the control module 31 transmits the locked protected directory to the database server 20 to back up the protected directory. That is, since the locked protected directory can only be accessed by the control module 31, the control module 31 drives the backup module 35 so that the information of the protected directory is stored in the database server 20. To be backed up.

After the control module 31 drives the backup module 35 to transmit the information of the protected directory to the database server 20 and backs it up, the control module 31 is connected to the smart phone 30. In order to prevent access to all directories stored in the server, additional locking is performed (s70).

As a result, any directory of the smartphone 30 is inaccessible, and the smartphone 30 becomes obsolete. In other words, after turning off the smartphone 30 and supplying power, only the booting is possible and no access to all directories is possible.

The additional locking process (s70) is a process for preventing access to all directories stored in the smart phone 30, and more comprehensively blocks all input / output functions, network connection functions, and communication functions of the smart phone 30. It includes the process of doing. That is, the process of performing the additional locking is a process of making the smart phone 30 itself completely useless, including the process of blocking the input / output function, the network connection function, and the communication function.

Therefore, the performance of the specific function according to the keypad input, the data output function by the external connection element (USB, etc.), the network connection function through the wireless or wired, and the telephone communication function are completely blocked through the additional locking process.

On the other hand, the additional locking process to prevent access to all the directories stored in the smart phone 30 may be a process of destroying all directories stored in the smart phone (30). That is, by destroying all directories stored in the smartphone 30, various functions (input / output function, network connection, communication function, etc.) of the smartphone 30 may be blocked. Destruction of all directories stored in the smart phone 30 may be performed through deletion or encryption of all directories.

As described above, after performing additional locking to disallow access to all directories stored in the smart phone 30, the emergency mode check message transmission process by the emergency mode check module 33 is no longer performed. Do not. That is, this process is not performed anymore because the smartphone 30 is already lost.

More specifically, after performing the additional locking (s70), the smart phone 30 in the emergency mode check step (s20) and information protection step (s50 ~ s70) for transmitting the emergency mode check message ) Is no longer performed. Since the emergency mode check step s20 is not performed, the smartphone loss reception confirmation and emergency mode status message transmission steps s30, s35, and s40 operating in the service server 10 are not performed.

However, after performing the additional locking (s70), the steps (s20 to s70) are not performed, but the operation of periodically transmitting only the location information of the smart phone 30 to the service server 10 is performed. . That is, only the location tracking module 37 of the lost smartphone 30 is continuously operated to transmit the location information of the lost smartphone 30 to the service server 10.

Therefore, the location information of the lost smart phone 30 is continuously stored in the service server 10, the owner of the lost smart phone 30 is connected to the service server 10 to his smartphone ( 30) can be tracked continuously.

The above operation is summarized with reference to FIG. 3 as follows.

First, the emergency module inspection module 33 of the smartphone is driven to periodically transmit a confirmation message and location information on the emergency mode to the service server 10. Then, the service server 10 transmits an emergency mode status message.

If the smartphone loss report is not received by the smartphone loser, the service server 10 transmits a general mode message to the smartphone 30. However, if a smartphone loss report is received, the emergency mode message is transmitted.

Thereafter, the smart phone 30 recognizes the emergency mode and immediately performs locking on the protected directory. Thereafter, the protected directory is operated to be backed up to the database server 10.

When the protected directory is backed up, additional locking is performed to prevent access to all directories. Thereafter, the smart phone 30 periodically transmits only the location information to the service server 10 by operating only the location tracking module 37 without performing a backup operation and an emergency mode check operation.

That is, since the protected directory is safely backed up and all directories of the smartphone 30 are blocked from access, only the location of the smartphone 30 needs to be continuously tracked. Thus, only the location tracking module 37 can be continuously operated.

Meanwhile, the control module 31 included in the smartphone 30 periodically checks whether the smartphone 30 is lost by controlling the emergency mode inspection module 33 as described above. When the smartphone is found to be in a lost state, the protected directory is locked and the information on the locked protected directory is backed up to the database server 20.

However, the control module 30 drives the backup module 35 to control the information of the protected directory to be backed up to the database server 20 in addition to the case where the smart phone 30 is confirmed to be in a lost state. There is a case.

In detail, the control module 31 may determine whether the smartphone 30 is in a lost state (even if an emergency mode message is not received from the service server), whenever there is a change of the protected directory or in advance. The backup module 35 is driven at each set backup period to control the information of the protected directory to be transmitted to the database server 20 for backup.

That is, the control module 31 periodically checks whether the smartphone 30 is in a lost state, and periodically checks whether a change occurs in the directory to be protected. Therefore, when there is a change of the directory to be protected by the user, such as addition, deletion, correction, the control module 31 recognizes the change of the directory to be protected, and drives the backup module 35 to change the changed directory. Information of the directory to be protected may be transmitted to the database server 20.

In addition, even when the backup period for the protected directory is set in advance by the user, the control module 31 periodically checks whether the smartphone 30 is in a lost state, and at the same time, the preset backup. The backup module 35 is driven at each cycle so that the information of the protected directory can be transmitted to the database server 20.

In this way, regardless of whether the smartphone 30 is lost, by backing up the changed protected directory in advance or backing up the information of the protected directory at every preset backup period, even if the smartphone 30 is lost later. There is an advantage to recovering important information.

On the other hand, regardless of whether the smart phone 30 is lost, there is a case to perform the backup operation and the locking operation by the control module 31. That is, in the case of illegally leaking data from the smart phone 30, if a phone loss report is late or an illegal user who acquires a phone does not immediately change the SIM, information leakage about illegal theft cannot be prevented. Includes the case of performing a backup operation or the like irrespective of the loss report of (30).

Therefore, when the smartphone 30 determines that the smart phone 30 is turned on after the SIM is replaced or detached, in addition to the case where the smart phone 30 receives the emergency mode message, the control module 31 is previously designated. ) Only permits access to the protected directory, and under the control of the control module 31, transmits the information of the protected directory to be backed up to the database server 20, and performs locking on all directories. Do this.

10: service server 20: database server
30: smart phone 31: control module
33: emergency mode inspection module 35: backup module
37: location tracking module

Claims (14)

delete A service server for transmitting an emergency mode message to the smartphone when the smartphone is received as lost;
When the emergency mode message is received, only a predetermined control module allows access to the protected directory, and under the control of the control module, transmits the information of the protected directory to be backed up to the database server, and then to all directories. A smart phone that performs locking on the device;
And the database server for backing up and storing information on a directory to be protected transmitted from the smartphone.
In the smartphone,
Emergency mode inspection module for periodically sending an emergency mode check message to the service server under the control of the control module, when it is confirmed that the smartphone is in the lost state by the emergency mode inspection module of the control module And a backup module for transmitting the information of the protected directory to the database server under control.
The method according to claim 2,
The smartphone further includes a location tracking module for periodically transmitting the location information of the smartphone to the service server under the control of the control module. .
The method according to claim 3,
The control module determines that the smartphone is in a lost state and controls only the location tracking module to be driven after the information of the protected directory is transmitted to the database server. Leak prevention system.
The method according to claim 2,
The control module drives the backup module every time there is a change of the protected directory or every preset backup period, except when the smartphone is confirmed to be in a lost state, so that the information of the protected directory is stored in the database. A system for preventing leakage of information stored in a lost smartphone, which is controlled to be transmitted to a server.
The method according to claim 2,
When the smartphone is determined to be turned on after the SIM is replaced or detached except for receiving the emergency mode message, only the control module allows access to the protected directory, and the control Under the control of the module, after transmitting the information of the protected directory to be backed up to the database server, and locking all the directories, characterized in that the leakage prevention system stored in the lost smartphone.
An emergency mode checking step of periodically transmitting an emergency mode check message to the service server by the smartphone registered to the service server through the emergency mode checking module provided in the smart phone;
Transmitting, by the service server, an emergency mode status message to the smartphone in response to the emergency mode confirmation message;
When the emergency mode status message is an emergency mode message corresponding to a lost smartphone, the smartphone includes an information protection step of backing up and storing the information in a protected directory stored in the smartphone to a database server so as not to leak. ;
In the information protection step, when the emergency mode inspection module receives an emergency mode message corresponding to the smartphone lost and inputs it to a control module installed in the smartphone,
The control module,
Locking the protected directory to be accessed only by the control module,
Transfer the protected directory to the database server through a backup module to be backed up,
When the backup is completed, to prevent the leakage of information stored in the lost smart phone, characterized in that for performing additional locking to prevent access to all directories stored in the smart phone.
The method according to claim 7,
The smart phone registered in the service server prevents leakage of information stored in the lost smart phone, characterized in that for transmitting the location information of the smart phone periodically to the service server in addition to the emergency mode check message.
delete The method according to claim 8,
After performing the additional locking, the smart phone does not perform the emergency mode check step and the information protection step any more, characterized in that to periodically transmit only the location information of the smart phone to the service server. How to prevent leakage of information stored on your lost smartphone.
The method according to claim 7 or 8,
The performing of the additional locking method includes preventing the input / output function, the network connection function, and the communication function.
The method according to claim 7 or 8,
The method of performing additional locking to prevent access of all the directories stored in the smartphone is a process of destroying all the directories stored in the smartphone.
The method according to claim 7 or 8,
The control module controls the protected directory to be backed up to the database server whenever there is a change of the protected directory or every preset backup period even if the emergency mode message is not received. How to prevent the leakage of information stored on the phone.
The method according to claim 8,
When the smartphone is determined to be turned on after the SIM is replaced or detached except for receiving the emergency mode message, only the predetermined control module allows access to the protected directory. Under the control of the control module, transmitting the information of the protected directory to be backed up to the database server, and performing locking on all directories.

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