It means the SSL/TLS certificate of the domain has an unusually short validity period, often lasting only days or weeks. This pattern is frequently associated with malicious infrastructures such as phishing pages, temporary command-and-control servers, or malware distribution hosts.
Three questions every analyst asks before acting on this signal.
It means the SSL/TLS certificate of the domain has an unusually short validity period, often lasting only days or weeks. This pattern is frequently associated with malicious infrastructures such as phishing pages, temporary command-and-control servers, or malware distribution hosts.
Threat actors use short-term or frequently rotated SSL certificates to avoid detection, automate infrastructure rotation, and reduce traceability. These certificates are often issued by free or automated services, allowing rapid deployment and disposal of domains.
Yes. Some legitimate organizations using automated DevOps or CI/CD environments issue short-term certificates for internal or test environments. However, when short validity is observed in public-facing domains, it should be treated as a potential risk indicator.
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": "short_ssl_registration",
"name": "Short-Term SSL Certificate Validity",
"group": "http_crawling_history",
"subgroup": "ssl_behavior",
"direction": "malicious",
"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…
The Verdict Gallery is a curated stream of real verdicts. Filter by this signal to see exactly which IOCs it caught, what other signals fired alongside it, and what the engine recommended.
100 IOCs/day on the free tier, LLM layer included. No card required.