If you’re not at least a little paranoid by the time you finish this class, then I haven’t been doing my job: from our friends at CAIDA comes “Remote physical device fingerprinting.”

Every computer clock has a bit of skew caused by tiny differences in the hardware. This causes the clock to be slightly different from every other clock, and it could be used to uniquely indentify your computer. It turns out that you can measure this skew from almost anywhere on the Internet, even from behind a firewall. Which means that, potentially, your computer can be tracked even if connects to the Internet through different networks…

Paranoid yet?

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