alert tcp [82.153.138.184,82.153.138.57,8.215.52.126,82.197.182.161,82.221.100.12,82.221.100.222,82.221.128.191,82.221.131.5,82.221.131.71,82.221.131.86] any -> $HOME_NET any (msg:"ET TOR Known Tor Exit Node Traffic group 131"; reference:url,check.torproject.org/torbulkexitlist; threshold:type limit, track by_src, seconds 60, count 1; classtype:misc-attack; flowbits:set,ET.TorIP; sid:2520130; 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;)