alert tcp [194.53.137.156,194.53.137.42,194.55.167.14,195.176.3.23,195.176.3.24,195.246.231.197,195.47.238.50,195.80.151.242,195.88.74.206,198.167.206.133] any -> $HOME_NET any (msg:"ET TOR Known Tor Exit Node Traffic group 66"; reference:url,check.torproject.org/torbulkexitlist; threshold:type limit, track by_src, seconds 60, count 1; classtype:misc-attack; flowbits:set,ET.TorIP; sid:2520065; rev:6316; metadata:affected_product Any, attack_target Any, deployment Perimeter, tag TOR, signature_severity Informational, created_at 2008_12_01, updated_at 2026_07_15;)