Communications of the ACM

The Communications Web site, http://cacm.acm.org, features more than a dozen bloggers in the BLOG@CACM community. In each issue of Communications, we'll publish selected posts or excerpts.

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40 years ago, Whitfield Diffie and Martin E. Hellman introduced the public key cryptography used to secure today's online transactions.

Big data is touted as a cure-all for challenges in business, government, and healthcare, but as disease outbreak predictions show, big data often fails.

Search engine developers are moving beyond the problem of document analysis, toward the elusive goal of figuring out what people really want.

New computational tools spur advances in an evolving field.

Unforeseen problems can result from the absence of impartial independent evaluations.

A single cache miss is more expensive than many instructions.

Making innovations happen is surprisingly easy, satisfying, and rewarding if you start small and build up.

ACM Fellow Professor Yale Patt reflects on his career in industry and academia.

Seeking to improve computer science publication culture while retaining the best aspects of the conference and journal publication processes.

Protecting social norms as confidentiality wanes.

A teenager explores ways to attract girls into the magical world of computer science.

Many of the skills aren't technical at all.

This visualization of software execution is a new necessity for performance profiling and debugging.

Farsighted physicists of yore were danged smart!

Human-centered design can make application programming interfaces easier for developers to use.

Computers broadcast their secrets via inadvertent physical emanations that are easily measured and exploited.

Randomization offers new benefits for large-scale linear algebra computations.

Whitfield Diffie and Martin Hellman on their meeting, their research, and the results that billions use every day.