It means that the SSL/TLS certificate of the domain has been issued with an unusually long validity period (e.g., multiple years). This is often seen in stable, enterprise-level infrastructures that plan for long-term service continuity.
Three questions every analyst asks before acting on this signal.
It means that the SSL/TLS certificate of the domain has been issued with an unusually long validity period (e.g., multiple years). This is often seen in stable, enterprise-level infrastructures that plan for long-term service continuity.
Not always. While legitimate organizations prefer long validity for operational stability, threat actors may also reuse older certificates from compromised or acquired domains to appear legitimate.
When combined with other positive signals (e.g., trusted CA, consistent ownership), it strengthens domain credibility. However, when seen with suspicious changes in WHOIS or IP behavior, it may indicate reputation hijacking or infrastructure repurposing.
A realistic shape of the entry the engine appends to the risk_signals array when this signal fires. Evidence keys are subgroup-default; per-signal overrides documented in the API reference.
{
"slug": "long_ssl_registration",
"name": "Long-Term SSL Certificate Validity",
"group": "http_crawling_history",
"subgroup": "ssl_behavior",
"direction": "safe",
"evidence": {
"cert_issued_days_ago": 9,
"issuer": "letsencrypt",
"valid_for_days": 90,
"rotation_count_90d": 3,
"cert_type": "DV"
}
}15 other signals share the same subgroup. They detect related behaviors and often co-fire on the same IOC.
It means that the SSL/TLS certificate presented by the domain failed critical validation checks. This can occur due to m…
It means the SSL/TLS certificate’s Common Name (CN) or Subject Alternative Name (SAN) does not match the accessed domain…
It means the SSL/TLS certificate of the domain includes verified organizational details that have been authenticated by …
It means the domain is using an SSL/TLS certificate that was generated and signed by the same entity, without verificati…
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