alert ip [93.114.52.0/23,93.114.54.0/24,93.114.55.0/24,93.114.58.0/23,93.114.99.0/24,93.114.187.0/24,93.115.59.0/24,93.119.118.0/23,93.119.120.0/23,93.123.109.0/24,93.152.219.0/24,94.26.38.0/24,94.26.88.0/24,94.26.90.0/24,94.26.105.0/24,94.26.106.0/24,94.74.164.0/24,94.74.191.0/24,94.103.188.0/24,94.141.122.0/24] any -> $HOME_NET any (msg:"ET DROP Spamhaus DROP Listed Traffic Inbound group 16"; 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:2400015; rev:4719; metadata:affected_product Any, attack_target Any, deployment Perimeter, tag Dshield, signature_severity Minor, created_at 2010_12_30, updated_at 2026_05_26;)