alert tcp [204.8.96.156,204.8.96.157,204.8.96.158,204.8.96.159,204.8.96.160,204.8.96.161,204.8.96.162,204.8.96.163,204.8.96.164,204.8.96.165] any -> $HOME_NET any (msg:"ET TOR Known Tor Exit Node Traffic group 77"; reference:url,check.torproject.org/torbulkexitlist; threshold:type limit, track by_src, seconds 60, count 1; classtype:misc-attack; flowbits:set,ET.TorIP; sid:2520076; rev:6360; metadata:affected_product Any, attack_target Any, deployment Perimeter, tag TOR, signature_severity Informational, created_at 2008_12_01, updated_at 2026_08_28;)