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Tor does not protect against a global passive adversary. If the NSA can watch most network traffic, they can do packet timing correlations and readily identify
by anologwintermut 13y ago
Tor does not protect against a global passive adversary. If the NSA can watch most network traffic, they can do packet timing correlations and readily identify you. They don't need backdoors or subverted exit nodes
- sliverstorm 13y agoBasically an extension of the tor attack where the feds knew roughly where the guy they wanted lived, and they could engage him in an IRC chat, so they talked to him in the chat, meanwhile driving a van around sniffing wireless networks looking for bursts in traffic that corresponded to the IRC transmissions. I always thought that was a pretty neat attack.
- MichaelGG 13y agoYeah. A way of defeating that is adding a constant-bitrate model, which is unlikely to be deployable at scale (network's slow enough as-is). Is it conceivable that nodes could hold packets for a period of time long enough that traffic is "really" mixed with other traffic? Or does this just add the equivalent of a random delay which is easily defeated?