ET INFO Observed Frequently Abused Online Tool Domain (klclick3 .com in TLS SNI)
Sourceet/open
CreatedFebruary 24, 2026
UpdatedFebruary 24, 2026
Classificationmisc-activity
alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET INFO Observed Frequently Abused Online Tool Domain (klclick3 .com in TLS SNI)"; flow:established,to_server; tls.sni; dotprefix; content:".klclick3.com"; endswith; fast_pattern; classtype:misc-activity; sid:2067918; rev:1; metadata:attack_target Client_Endpoint, created_at 2026_02_24, deployment Perimeter, confidence High, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2026_02_24;)
Metadata
attack targetClient_Endpoint
created at2026_02_24
deploymentPerimeter
confidenceHigh
signature severityInformational
tagDescription_Generated_By_Proofpoint_Nexus
updated at2026_02_24
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