ET INFO Observed Blockchain RPC Domain (polygon-mainnet .public .blastapi .io in TLS SNI)
Sourceet/open
CreatedFebruary 4, 2026
UpdatedFebruary 4, 2026
Classificationmisc-activity
alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET INFO Observed Blockchain RPC Domain (polygon-mainnet .public .blastapi .io in TLS SNI)"; flow:established,to_server; tls.sni; dotprefix; content:".polygon-mainnet.public.blastapi.io"; endswith; fast_pattern; classtype:misc-activity; sid:2067317; rev:1; metadata:attack_target Client_Endpoint, created_at 2026_02_04, deployment Perimeter, confidence High, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2026_02_04;)
Metadata
attack targetClient_Endpoint
created at2026_02_04
deploymentPerimeter
confidenceHigh
signature severityInformational
tagDescription_Generated_By_Proofpoint_Nexus
updated at2026_02_04
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