It means the IP matches several independent blacklist groups simultaneously, such as spam, malware hosting, scanning, botnet traffic, or brute-force sources. Multiple category matches significantly increase confidence in its malicious nature.
Three questions every analyst asks before acting on this signal.
It means the IP matches several independent blacklist groups simultaneously, such as spam, malware hosting, scanning, botnet traffic, or brute-force sources. Multiple category matches significantly increase confidence in its malicious nature.
An IP being flagged in multiple blacklist categories reflects broad-spectrum malicious activity. Such IPs are often part of abusive hosting, compromised servers, or multi-purpose attack infrastructure and should be considered high risk.
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": "ip_blacklisted_category_multi",
"name": "Multi Group Blacklist Match",
"group": "threat_intelligence_feed",
"subgroup": "ip_blacklist_reputation",
"direction": "malicious",
"evidence": {
"blacklist_count": 7,
"listing_sources": [
"spamhaus",
"abuseipdb",
"uribl"
],
"first_listed_days_ago": 3,
"last_listed_days_ago": 0
}
}3 other signals share the same subgroup. They detect related behaviors and often co-fire on the same IOC.
It indicates that the IP was listed on blacklist feeds very shortly after the IP block or infrastructure was registered …
It means the IP address appears in at least one threat intelligence blacklist, indicating it has been associated with su…
It means the IP has appeared in one or more threat intelligence blacklist datasets, indicating that it has been associat…
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.