3 ms·
I feel like if I were a network operator for something that sensitive I might send some bursts of traffic to nothing just to keep anyone trying to infer "lots o
by deathanatos 7y ago
I feel like if I were a network operator for something that sensitive I might send some bursts of traffic to nothing just to keep anyone trying to infer "lots of traffic" → "something going on" on their toes.
(Though certainly things like packet timing, packet size, etc. might make more thorough analyses harder to escape…)
- astrange 7y agoA highly secure connection either uses a fixed-bandwidth pipe or constantly sends random data to avoid correlation like this.
- 420codebro 7y agoCorrect. Inside the NSA-bubble this is typically referred to as Link Masking. Extremely inefficient (you are broadcasting a CBR of X bits per second regardless of activity) - but pretty much makes it immune to frequency analysis.
- bigiain 7y agoI'm now imagining a significant portion of some small country in politically sensitive area's external internet bandwidth being composed entirely of vpn encrypted email with attached Word docs and Powerpoint decks full of "This page left intentionally blank" sent from embassies back to their respective motherships...