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Introducing the Invulnerable Evercookie 332

An anonymous reader writes "Using eight different techniques and locations, a 'security' guy has developed a cookie that is very, very hard to delete. If just one copy of the cookie remains, the other locations are rebuilt. My favorite storage location is in 'RGB values of auto-generated, force-cached PNGs using HTML5 Canvas tag to read pixels (cookies) back out' — awesome."
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Introducing the Invulnerable Evercookie

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Nearly every complex solution to a programming problem that I have looked at carefully has turned out to be wrong. -- Brent Welch

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