Skip to content
NewVerdictIQ Connector is here. One Docker image enriches your DNS logs with verdicts inside your network and forwards them to your SIEM.Install guide

Multi Group Blacklist Match

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.

Analyst Q&A

What this signal answers

The questions every analyst asks before acting on this signal.

What it detects01

What does 'Multi Group Blacklist Match' mean?

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.

Why it matters02

What does this situation indicate from a SOC perspective?

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.

Often paired with:alert_only
Evidence shape

What Multi Group Blacklist Match looks like in the response

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.

json
{
  "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
  }
}
See in API reference
Siblings

Peers in IP Blacklist & Reputation

6 other signals share the same subgroup. They detect related behaviors and often co-fire on the same IOC.

Fast Emerging Blacklist IP

It indicates that the IP was listed on blacklist feeds very shortly after the IP block or infrastructure was registered …

MaliciousCore
High-Risk Blacklist Sources

It means the IP address appears in at least one threat intelligence blacklist, indicating it has been associated with su…

MaliciousCore
IP Blacklisted Recently (High Freshness)

It means the IP has appeared in one or more threat intelligence blacklist datasets, indicating that it has been associat…

Malicious
Anonymizer/VPN/Proxy IP Detected

The domain's IP is associated with anonymization services such as VPN providers, Tor exit nodes, or proxy networks.

Malicious
Show 2 more in IP Blacklist & Reputation

Start free, in five minutes

1,000 verdicts/month on the free tier, LLM layer included. No card required.