Ze Russians. And probably many others.

Just remembered a story written by a Tor project team member. He was attending a meeting, in Rome I think, and he realised he was being followed. Possibly by American intelligence agents.

As Tor gains popularity (see Netflix’s How To Sell Drugs Online Fast), I expect de-anonymization efforts to escalate.

https://thenextweb.com/security/2019/07/22/bbc-russia-is-working-on-a-tor-de-anonymization-project/