alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET JA3 Hash - Possible Nessus Client"; ja3.hash; content:"9598288c48f0a784d8e153b0df2b3bd1"; classtype:bad-unknown; sid:2033150; rev:1; metadata:attack_target Client_Endpoint, created_at 2021_06_17, deployment Perimeter, performance_impact Low, confidence Low, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_06_17;)