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One of the important privacy implications this highlights is online status. Anything that shows your current status (online, offline, on phone, etc) is a privac
by driverdan 12y ago
One of the important privacy implications this highlights is online status. Anything that shows your current status (online, offline, on phone, etc) is a privacy issue. Someone can easily track when you log into IRC, when you're marked as online / offline on various messaging platforms (Gtalk, AIM, FB Messages, etc) and use it against you.
- schoen 12y agoParticularly if they can observe your physical whereabouts or your Internet traffic to correlate it against the presence indication. There is a privacy-preserving presence protocol from the creators of OTR: http://cacr.uwaterloo.ca/techreports/2014/cacr2014-10.pdf http://cacr.uwaterloo.ca/techreports/2014/cacr2014-10.pdf The main limitations are that it adds a delay to presence updates, it requires users to store their own buddy lists (basically in the same way as and for the same reasons as they store their own private cryptographic keys), and it doesn't help if one of your contacts is using their access to your presence information to attack you.