alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET INFO Serialized Data request"; flow:established,to_server; http.uri; content:".ser"; endswith; http.user_agent; content:"Java/1."; classtype:bad-unknown; sid:2016504; rev:5; metadata:created_at 2013_02_26, confidence High, signature_severity Informational, updated_at 2020_04_24;)