Interesting, I created a quick and dirty PoC for Windows: http://skypher.com/SkyLined/download/xmlHttpFingerprint/xmlHttpFingerprint.cmd I've not tested it on many systems, so results may vary. It seems to work well enough though... Cheers, SkyLined -------------------------------------------------------------------------------------------------------- Berend-Jan Wever <berendjanwever@xxxxxxxxx> http://skypher.com