alert tcp [178.20.55.16,178.20.55.182,178.218.144.18,178.218.144.64,178.218.144.96,178.79.154.219,179.43.128.16,179.43.133.50,179.43.159.78,179.43.182.232] any -> $HOME_NET any (msg:"ET TOR Known Tor Exit Node Traffic group 28"; reference:url,check.torproject.org/torbulkexitlist; threshold:type limit, track by_src, seconds 60, count 1; classtype:misc-attack; flowbits:set,ET.TorIP; sid:2520027; 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;)