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Greynoise Block
Fully configurable, real-time blocklists to stop attackers in their tracks
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Find out immediately if an asset communicates with a malicious IP address
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Filter out noisy, low priority and false-positive alerts from mass internet scanners
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Why GreyNoise
Products
Greynoise Block
Fully configurable, real-time blocklists to stop attackers in their tracks
Greynoise INTELLIGENCE for
CVE Disclosure Early Warning
Get an early warning when traffic spikes indicate a high likelihood of new disclosures
Compromised Asset Detection
Find out immediately if an asset communicates with a malicious IP address
Vulnerability Prioritization
Get real-time insight into active exploitation trends to better understand risk and severity
SOC Efficiency
Filter out noisy, low priority and false-positive alerts from mass internet scanners
Incident Investigation
Add context to incidents to speed the determinations of scope and timelines
Threat Hunting
Quickly identify anomalous behavior and enrich your threat hunting campaigns
Integrations
GreyNoise Integrations
SIEM
SOAR
TIP
Firewall
Resources
Blog
Resource Library
Storm Watch Podcast
Tag Request
Documentation
Company
About
Press Room
In the News
Upcoming Events
Partners
Community
Careers
GreyNoise Love
GreyNoise in the news
The latest news, announcements, and perspectives from GreyNoise.
Visit This Free Online Page From GreyNoise To See If Your IP Is Part Of A Botnet
Dec 28, 2025
React2Shell: Dozens breached, tens of thousands vulnerable, including 500+ in Australia
Dec 8, 2025
Critical React2Shell RCE Flaw Actively Exploited to Run Malicious Code
Dec 8, 2025
Critical React2Shell RCE Vulnerability Exploited in the Wild to Execute Malicious Code
Dec 8, 2025
Hackers exploit Palo Alto and SonicWall VPN login portals
Dec 8, 2025
Palo Alto GlobalProtect Portals Face Spike in Suspicious Login Attempts
Dec 8, 2025
Hackers Launch Widespread Attacks on Palo Alto GlobalProtect Portals from 7,000+ IPs
Dec 7, 2025
React2Shell flaw exploited to breach 30 orgs, 77k IP addresses vulnerable
Dec 6, 2025
2.15M Web Services Running Next.js Exposed Over Internet, Active Exploitation Underway – Patch Now
Dec 6, 2025
New wave of VPN login attempts targets Palo Alto GlobalProtect portals
Dec 6, 2025
Critical React2Shell Flaw Added to CISA KEV After Confirmed Active Exploitation
Dec 6, 2025
Attackers launch dual campaign on GlobalProtect portals and SonicWall APIs
Dec 6, 2025
AI and Cybersecurity: Staying Ahead of Threats
Dec 5, 2025
Warning: React2Shell vulnerability already being exploited by threat actors
Dec 5, 2025
Attackers hit React defect as researchers quibble over proof
Dec 5, 2025
State-linked groups target critical vulnerability in React Server Components
Dec 5, 2025
Millions of Android devices hijacked as experts warn 'you're not the target, you're the weapon'
Dec 3, 2025
Is your PC secretly trapped in a botnet? This free tool checks instantly
Dec 3, 2025
AI semantics, Calendly, Teams, Schmaltz, India, Antigravity, Scada, Aaran Leyland… – SWN #534
Dec 2, 2025
Millions Of Androids Hijacked By Botnets—Click Here To Check Yours
Dec 2, 2025
2026 Security Predictions: Are You Prepared?
Dec 2, 2025
GreyNoise launches free scanner to check if you’re part of a botnet
Dec 1, 2025
Malicious IP scanning detection tool unveiled
Dec 1, 2025
New GreyNoise IP Checker Helps Users Identify Botnet Activity
Nov 28, 2025
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