-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 [moved to tor-relays] Hi relay ops, please consider having a regular look at your logs after upgrading to the latest tor releases to spot relay_early attacks (even if the attack origin is not directly attributable from a relays point of view). searching your logs for 'Received an inbound RELAY_EARLY cell' should do it. https://gitweb.torproject.org/tor.git/commitdiff/68a2e4ca4baa595cc4595a511db...
It doesn't have to decrypt the stream to see it, because whether a cell is relay or relay_early is a property of the (per hop) link, not a property of the (end-to-end) stream.
Does a patched relay also create a log entry as soon as it "kills" the circuit or is logging only happening on tor instances acting as clients?
The patched relay also does a log message, yes.
But the relay can only see its immediate neighbor in the circuit, so it will only log that. Whether the attacking relay is that (adjacent) one, or one farther on the circuit, isn't something your relay can learn.
-----BEGIN PGP SIGNATURE----- iQIcBAEBCgAGBQJT3Bt6AAoJEDcK3SCCSvoensYQAJnuXhPNbhdJF7C6P9L8elG7 elPinCK6vmTbRXCoQam5j1VeL9C3FCBv415s811hfZxA37K17VdiKoS1NXB2kzkW 7WvL5/lH8culr83GTxrca0m7i2x6n0gCPOVPUWI3Go5bzwlsEidZsj7V14h2lfXH Ew8ZavvL0SLnRYJTvcjzqrWf3L8LsfYou6R2Y7yn085rGaGtUyVkQM44G9Zy3TVY 3lS4XqkZekXmmKjP06JjWdFMFdkaQhItbcdn3fF131ptlZlM5hFUaEpZHbpLLcjz fgJOt36jlkfILKRvxGyzcI118wmgrFVJFz9d7fuLVOdekK49aWxKh9Yh2aAekQEn Z3uF/eskL+Txptrc7iEKuWQZVlEkA8WVaQ70F1ADD/irln6ShJ17zrKqJ0qtaYlU V+CNfj/v2R6AgRhbVsNRdq8SWhDz4Nk4WgdYoUvxzgM1jmkAhQamlkC4f6JCqVQE /O0qeuXr/Z02pBwshcZlqKnBmPtuilSZwmlstIEfPAX9Tg6S1a0B/ycp3ByyJHJP QUNKwJ/cHtLpdPmIh2XUOT/5Kf10qmrLP5amYdRtBh304GoeHir3N/zfPmxdLfy7 Spb8W4p2C1HITzRlb9J97OGdKOR/2OOziZHOWZimF5O3fsrzsXQZe3Wlwbt5AxtY LJ5aXCUjNJ/TXe93nSQH =3FwX -----END PGP SIGNATURE-----