Alert REDUCTION

Not all alerts are created equal

Filter out noisy, low priority and false-positive alerts from mass internet scanners

Overview

The internet is noisy. Thousands of mass scanners scan the internet every minute, some for legitimate reasons, others to build victim pipelines. Advanced threat actors intentionally create noise to obfuscate more targeted attacks. This creates an unprecedented flood of alerts for your security team.

GreyNoise reduces alert fatigue by classifying IPs as benign, malicious, or suspicious. This instantly separates noise from real threats. Benign traffic can be deprioritized, malicious and suspicious activity escalated for investigation.

How GreyNoise Helps
Reduce Noise in Your SOC

Reduce Alert Fatigue

By classifying benign sources, GreyNoise eliminates noise from the alert triage queue, preventing wasted analyst time.

Escalate Confirmed Threats

Alerts tied to IPs classified as malicious—such as active exploitation, malware distribution, or botnet activity—can be automatically prioritized.

Smarter Automation

SOC playbooks can use GreyNoise classifications and tags to automate alert routing.

Block Unsolicited Scan Traffic

Use GreyNoise query-based, dynamic IP blocklists to block unsolicited scanning and reduce SOC noise.

How it Works

Explore Available Fields

Filter by category & search available IP fields and their uses with GreyNoise.
Categories
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NAME
Description & Use
Source Country
Country where the IP is registered. Provides attacker infrastructure location context.
IP Address Metadata
Source Country Code
ISO country code for the IP’s registration country.
IP Address Metadata
Source Country Count
Count of IPs originating from each country. Useful for geo-distribution of attacks.
Stats & Aggregates
Spoofable
Shows whether the IP completed a valid TCP handshake. If false, traffic may be spoofed or fake.
Classification
Spoofable Count
Count of spoofable vs. non-spoofable IPs. Highlights volume of potentially fake traffic.
Stats & Aggregates
Tags Count
Count of IPs associated with specific tags. Helps identify common behaviors at scale.
Stats & Aggregates
Tor
Identifies if the IP is a Tor exit node. Tor traffic often indicates obfuscation or anonymization.
IP Address Metadata
Updated At
Date/time when the tag was last updated.
Tag Information
VPN
Flags if the IP belongs to a VPN provider. Suggests identity masking or evasive behavior.
IP Address Metadata
VPN Service
Name of the VPN service associated with the IP. Useful for attribution and filtering.
IP Address Metadata
ID
Unique tag identifier.
Tag Information
IP
The observed IP address itself. Primary entity to investigate or correlate across alerts.
Identity & Ownership
Intention
Tag’s intent classification: benign, malicious, suspicious, or unknown. Adds risk context.
Tag Information
Last Seen
Last date the IP was observed by GreyNoise sensors. Indicates recency of activity.
Activity Timeline
Last Seen Timestamp
Exact date and time the IP was last observed. Enables timeline reconstruction in investigations.
Activity Timeline
Mobile
Indicates if the IP belongs to a mobile/cellular network.
IP Address Metadata
Name
Display name of the tag. Analyst-facing label for quick recognition.
Tag Information
Organization
Organization responsible for the IP. Adds enrichment for attribution.
IP Address Metadata
Organization Count
Count of IPs linked to each organization. Useful for assessing exposure by provider.
Stats & Aggregates
RDNS
Reverse DNS value for the IP. May reveal hostnames tied to services or campaigns.
IP Address Metadata
RDNS Parent
Parent domain of the reverse DNS. Useful for clustering infrastructure.
IP Address Metadata
Recommended Block
Indicates whether IPs with this tag should be blocked. Supports automated policy decisions.
Tag Information
References
References (e.g., CVE pages, docs) supporting the tag. Provides analyst enrichment sources.
Tag Information
Region
State/province where the IP is registered. Adds sub-country geolocation context.
IP Address Metadata
Single Destination
True if the IP only scanned one country. Suggests targeted reconnaissance.
IP Address Metadata
Slug
Short identifier for the tag. Useful in queries and API lookups.
Tag Information