alert ip [76.74.0.0/24,76.74.36.0/24,76.74.40.0/24,76.74.42.0/24,76.74.52.0/24,76.74.60.0/24,76.74.78.0/24,77.36.112.0/21,77.47.178.0/24,77.47.242.0/24,77.81.84.0/23,77.81.86.0/24,77.81.89.0/24,77.83.39.0/24,77.90.154.0/24,77.90.185.0/24,77.91.65.0/24,77.91.96.0/24,77.91.97.0/24,77.91.119.0/24] any -> $HOME_NET any (msg:"ET DROP Spamhaus DROP Listed Traffic Inbound group 10"; 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:2400009; 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;)