The German police have successfully deanonymized at least four Tor users. It appears they watch known Tor relays and known suspects, and use timing analysis to figure out who is using what relay.
Tor has written about this.
Hacker News thread.

    • @[email protected]
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      25 days ago

      I doubt it. I think OP wanted upvotes and didn’t read carefully. Something like “tor user de-anonymized via retired app” would of been more accurate.

      This is another great lesson that even the best privacy tools can’t protect a user from their own bad opsec.

      It just sucks as a lot of Lemmy users will just read the title and assume its true and then tell their friends tor is no longer safe.

    • sunzu2
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      126 days ago

      German feds cant maintain proper posture against russia so these limp dick cucks need some good PR?