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Host: Chad Perrin
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American Express password policy takes the cake

Bad password policy is one thing. Comically bad explanations of it are another thing entirely. It doesn't inspire confidence in the security organization.

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BrowserSpy.dk: Reveals more than enough information

For various reasons, Web browsers freely pass information to Web host. Lots of information, just ask BrowserSpy.dk.

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Cryptography's running gag: ROT13

If your cryptographer buddies are cracking cryptic jokes, you should check out Chad Perrin's explanation of the ROT13 cipher.

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The danger of complexity: More code, more bugs

The old method of counting lines of code to judge programmer productivity may have helped contribute to the current deplorable state of software security.

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Panopticlick: Your Web browsing is less anonymous than you think

Visiting Web sites provides the Web host access to more information than you realize. It may be enough to create a traceable fingerprint.

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The use and misuse of the XOR stream cipher

The XOR stream cipher is the foundation of the one-time pad cipher, as well as many other strong ciphers, but it can also be the foundation of a very weak cryptographic system, and it serves equally well as a tool for cracking itself. The devil is in the details.

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The enduring cipher: Unbreakable for nearly 100 years

One cryptographic cipher has been mathematically proven to be unbreakable when it is used correctly, but it is only very rarely used. Chad Perrin breaks down the one-time pad cipher.

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Are TSA policies a bad joke?

As the idea that TSA policies are a joke becomes ever more popular with the American people, one TSA screener decides to prove them right - literally.

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GoogleSharing: A way to prevent tracking by Google

A security expert is taking on Google. His innovative Firefox add-on prevents Google from tracking your whereabouts on the Internet.

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How antivirus software works: Is it worth it?

Michael Kassner is frequently asked whether antivirus programs are worth the bother of employing. His typical response has been yes, but recently, he started to question that.

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