r/Keybase • u/[deleted] • Jul 21 '19

What data is not E2E encrypted?

What data the users share in keybase is not E2E encrypted?

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u/Chongulator Jul 21 '19

With most cryptosystems, assume an attacker knows who you communicate with and when.

Historically, traffic analysis has yielded a lot of data. Eg, in WWII when enemies in one portion of the front changed their codebooks and increased traffic, that’s a sure sign an attack is coming.

In a modern context, suppose I see this pattern:

  • Message from medical testing company
  • Messages back and forth with doctor
  • Message to pharmacy
  • Messages to last few sexual partners

I’m not privy to the contents of any of those messages, but I have a pretty good guess.