alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET INFO Imposter USPS Domain"; flow:established,to_server; http.host; content:".usps.com."; fast_pattern; classtype:bad-unknown; sid:2015848; rev:5; metadata:created_at 2012_10_27, confidence High, signature_severity Informational, updated_at 2020_09_03;)