Even if that computer moves location and changes ISP, it can be later identified through this clock skew. In addition to varying between computers, clock skew also changes depending on temperature. Thus a remote attacker, monitoring timestamps, can make an estimate of a computers environment, which has wide-scale implications on security and privacy.
Tuesday, January 02, 2007
Detecting temperature through clock skew
Steven Murdoch's presentation about how people can unmask an anonymous online publisher by remotely monitoring his computer's temperature.
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