alert tcp [204.8.96.70,204.8.96.71,204.8.96.72,204.8.96.73,204.8.96.74,204.8.96.75,204.8.96.76,204.8.96.77,204.8.96.78,204.8.96.79] any -> $HOME_NET any (msg:"ET TOR Known Tor Exit Node Traffic group 81"; reference:url,check.torproject.org/torbulkexitlist; threshold:type limit, track by_src, seconds 60, count 1; classtype:misc-attack; flowbits:set,ET.TorIP; sid:2520080; 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;)