Wikipedia:Vandalism

You can help "fight" vandalism. This means getting rid of bad changes by other users. It's very easy, and you don't even need to make an account or log in! Here's how:

1. Go to the "New changes" page. This shows you the most recent changes that any user makes to any page. You can also find a link to this page near the top left corner while you are on Wikipedia, under the globe logo.
2. Click on one of the "diff" links to see the change made by the user on the page listed on the new changes page. To help you choose which "diff" to see, here are some things to look out for:
   • Anonymous users—most vandalism is done by someone who is not logged in. If so, you will see their IP address rather than a username.
   • Big changes to the article size - the green or red number tells you how much content the user added or removed from the page. If it's a very large number (which may also appear as bold text), there's a good chance that it could be vandalism.
   • Change summary - this is meant to tell other users what has been changed. Many vandals do not write anything, but if they do, it appears in brackets "(" and ")" and in italics. Look especially for common sentences like "Fixed typo" or "Added content" - these are called "canned" summaries and can often be "misleading", or in other words, not tell the truth. It may look to be any other normal change, but could be vandalism.
   • Tags - Wikipedia has automatic filters that try to stop users from making changes if they do not seem to be good, such as if there is a slang or swear word. In this case, you could see a "tag" that says something like "blanking", "repeating characters", or even "possible vandalism". Also, keep in mind that test changes are also more likely to be made from a mobile device or using the "visual editor", in which case you would see a "mobile edit" or "visual edit" tag.
3. Once you see the change, you have to decide whether it is vandalism or not. If you aren't sure, don't do anything, and ask someone for help—remember the old saying, "better safe than sorry". If you are sure that an edit is vandalism, then you should remove it immediately. What you should do depends on whether the vandalism was done on a new page or not (to find out, click on "View history" at the top of the page):
   • If the vandalism was done on a new page that meets the quick deletion policy (nobody else has made or changed it except the vandal(s)—there may be more than one), put the code {{QD|reason}} on it and replace "reason" with why it should be deleted. If an administrator agrees with you, they will delete the page and everything on it.
   • If the vandalism was done on a page that is not new (other people have made or changed the page but are not vandals), revert (that is, undo) the change, if it has not been done already. You can usually do this by clicking "undo" beside the word "change" beside "Latest revision" and then saving the page (if you see "Revision" but not "Latest revision", the change may have already been reverted, and you should click "Newer diff" until you see "Latest revision" to make sure). Make sure that after you revert the change, there is no more vandalism on the page. You may have to revert more than one change (which is where the "rollback" feature becomes very helpful for).
4. Once the vandalism is gone, it is a good idea to give the vandal a warning that they should not do it again. To do this, go to their talk page (by clicking "talk" beside their username or IP address) and put a warning template (a message that has already been set) on it. There are many ways to warn these users; some of them are listed below. You should always look at what is already on that page as well as the user's other changes (you can check them by clicking on the "changes" link next to the username on the new changes page, or, for an anonymous user, you can click on their IP address).
5. If users continue to vandalize pages (look out for other contributions that have been reverted, or other warning templates on their talk page), go to Vandalism in progress and follow the instructions there to report the vandal to "administrators". They are able to block and ban users who do not follow the rules of Wikipedia, and this includes vandalism. Sometimes, if there are no administrators available, you can try to contact them through their other talk pages if they have one, or through the email links on the page about administrators.

That's it! If you want to know more about how to help fight vandalism, you can always ask questions at Wikipedia:Simple talk.

• Level 1 (General Note) – Assumes good faith. Generally includes "Welcome to Wikipedia" or something similar.
• Level 2 (Caution) – Does not assume whether or not the editor is acting in good faith.
• Level 3 (Warning) – Assumes bad faith; warns editor to stop what they are doing.
• Level 4 (Final Warning) – Assumes bad faith; a strong, final warning to the editor to stop what they are doing.
• Level 4im (Only Warning) – Assumes bad faith; a strong, first and only warning to the editor to stop what they are doing. This should only be used in extreme cases.

Note: Not all of these warning templates are for vandalism.

For repeated vandalism by anonymous IP addresses, it is helpful to trace the IP address and add {{SharedIP|Name of owner}} to the user talk page of the address.

The owners of IP addresses can be found using:

• ARIN (North America)
• RIPE NCC (Europe, the Middle East and Central Asia)
• APNIC (Asia Pacific)
• LACNIC (Latin American and Caribbean)
• AfriNIC (Africa)

If an address is not in one, it might be in a different one.

Twinkle is a script that allows autoconfirmed users to revert and warn vandals.

Vandal Warner is a gadget you can use to warn the vandals more easily. In order to use it, you should click on the my settings link and go to the "Gadgets" tab. Then you should select Vandal Warner and save the settings. Of course, you can use gadgets only when you are logged in.

Navigation popups has a revert script in it that lets you revert to a specific version, to add this:

1. Go to My Settings
2. Go to Gadgets
3. Check Navigation popups (API)
4. Click save

After that, you'll need to flush your old monobook.js from your cache. Pressing Ctrl+F5 on some browsers might work, or Ctrl-R on some others. Then it will work, if not ask for help. There are other anti-vandalism gadgets there besides these.

• Wikipedia:Vandalism in progress
• Wikipedia:Spam
• Anti-vandalism ideas
• Vandalbot
• #cvn-simplewikis an IRC channel dedicated to fighting vandalism on Simple English Wikipedia and Wiktionary