alert ip [205.172.140.0/22,205.172.244.0/22,205.175.160.0/19,205.189.71.0/24,205.189.72.0/23,205.189.207.0/24,205.196.28.0/22,205.196.48.0/23,205.196.51.0/24,205.196.52.0/24,205.196.53.0/24,205.196.54.0/24,205.196.55.0/24,205.196.56.0/22,205.196.60.0/23,205.196.62.0/24,205.196.67.0/24,205.196.68.0/23,205.196.71.0/24,205.196.72.0/22] any -> $HOME_NET any (msg:"ET DROP Spamhaus DROP Listed Traffic Inbound group 61"; 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:2400060; rev:4770; metadata:affected_product Any, attack_target Any, deployment Perimeter, tag Dshield, signature_severity Minor, created_at 2010_12_30, updated_at 2026_07_16;)