alert tcp [172.234.228.174,172.234.92.148,172.245.84.5,172.81.132.35,172.81.132.94,173.255.198.243,176.118.193.33,176.121.81.51,176.58.121.177,176.65.134.79] any -> $HOME_NET any (msg:"ET TOR Known Tor Exit Node Traffic group 19"; reference:url,check.torproject.org/torbulkexitlist; threshold:type limit, track by_src, seconds 60, count 1; classtype:misc-attack; flowbits:set,ET.TorIP; sid:2520018; rev:6435; metadata:affected_product Any, attack_target Any, deployment Perimeter, tag TOR, signature_severity Informational, created_at 2008_12_01, updated_at 2026_11_11;)