Firefox plans fix for decade-old browsing history leak

"Firefox developers say they're close to plugging an information leakage hole that has plagued every major browser for more than a decade.

"The cascading style sheets history attack makes it easy for web masters to compile vast lists of links visitors have previously viewed. It exploits technology in virtually every browser that causes visited links to be displayed in purple rather than blue. Mozilla has classified the weakness as a bug since at least 2002.

"But fixing it has proved to be a vexing problem, largely because programmers didn't know how to close the hole without breaking key web functionality."

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