alert ip [185.129.8.0/22,185.129.208.0/22,185.130.36.0/22,185.132.8.0/22,185.132.53.0/24,185.134.48.0/22,185.137.98.0/24,185.144.180.0/22,185.148.240.0/22,185.161.148.0/22,185.165.78.0/24,185.166.92.0/24,185.169.4.0/24,185.177.239.0/24,185.189.73.0/24,185.192.36.0/22,185.192.100.0/23,185.192.103.0/24,185.197.182.0/24,185.212.240.0/22] any -> $HOME_NET any (msg:"ET DROP Spamhaus DROP Listed Traffic Inbound group 41"; reference:url,www.spamhaus.org/drop/drop.txt; threshold:type limit, track by_src, seconds 3600, count 1; classtype:misc-attack; flowbits:set,ET.Evil; flowbits:set,ET.DROPIP; sid:2400040; rev:4888; metadata:affected_product Any, attack_target Any, deployment Perimeter, tag Dshield, signature_severity Minor, created_at 2010_12_30, updated_at 2026_11_11;)