It indicates that one or more domains under this ASN have been reported as malicious by commercial or open-source security vendors, suggesting that the ASN is associated with active or historical malware operations.
Three questions every analyst asks before acting on this signal.
It indicates that one or more domains under this ASN have been reported as malicious by commercial or open-source security vendors, suggesting that the ASN is associated with active or historical malware operations.
When multiple domains belonging to the same ASN are independently flagged by security vendors, it reflects a recurring pattern of abuse within the ASN’s hosting environment and significantly increases confidence in malicious attribution.
This is a strong malicious indicator. While individual domain detections may occasionally be false positives, repeated vendor-malware flags across the same ASN strongly suggest malicious infrastructure and should elevate triage priority.
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": "asn_domain_security_vendors_malware",
"name": "ASN Domain Flagged By Security Vendors",
"group": "dns_history",
"subgroup": "asn_infrastructure_profile",
"direction": "malicious",
"evidence": {
"asn": "AS13335",
"asn_org": "Cloudflare, Inc.",
"asn_allocation_year": 2010,
"asn_geo_risk": "low",
"hosted_domain_count": 18420315
}
}13 other signals share the same subgroup. They detect related behaviors and often co-fire on the same IOC.
It indicates that domains hosted under this ASN have been involved in malware distribution, payload hosting, or command-…
It indicates that domains hosted under this ASN exhibit algorithmic or pseudo-random naming characteristics, a pattern s…
It indicates that domains hosted under this ASN show very low visibility or traffic, a characteristic commonly seen in d…
It means that one or more domains hosted under this ASN were registered very recently, which is a common trait of early-…
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