PC clock as a fingerprint for your PC
Date: March 08, 2005Source: Aunty Spam's Net Patrol
"The clock deviation fingerprint" is based on the work of University of California graduate student Tadayoshi Kohno, who explains that clock deviation fingerprinting is based on the fact that typically "each party in a TCP flow includes information about its perception of time in each outgoing packet. A fingerprinter can use the information contained within the TCP headers to estimate a device's clock deviation and thereby fingerprint a physical device."
This, by the way, is all done without the knowledge or any cooperation from the owner of the Internet-connected device being tracked and fingerprinted by its clock deviation. Says Kohno, "For all our methods, we stress that the fingerprinter does not require any modification to or cooperation from the fingerprintee." Even more impressive when you consider that they have successfully used clock deviation fingerprints to track devices using just about every popular operating system, including Windows, OS X, Linux, FreeBSD, and even Pocket PCs.
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2005-03-08 17:56:44 - >GOOD PEICE OF WORK Thank you! Aunty... Aunty Spam |
2005-03-08 13:38:59 - GOOD PEICE OF WORK champ |
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