We are actively tracking IPs scanning for paths that match ProxyNotShell vulnerabilities in Microsoft Exchange Server. To view activity related to these paths click here.

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GreyNoise is THE source for understanding internet noise.
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Solving internet noise

We collect, analyze, and label data on IPs that scan the internet and saturate security tools with noise. This unique perspective helps analysts waste less time on irrelevant or harmless activity, and spend more time focused on targeted and emerging threats.

Increase analyst efficiency

GreyNoise helps analysts recognize events not worth their attention. Indicators in GreyNoise are likely associated with opportunistic internet scanning or common business services, not targeted threats. This context helps analysts focus on what matters most.

Find compromised devices

If we see your device scanning the internet, it's likely compromised. GreyNoise notifies analysts when an IP they care about shows up in our collection, helping security teams respond quickly to compromises.

See emerging threats

Security teams can uncover tradecraft seen across the internet through our GreyNoise Query Language (GNQL). Our tags reveal IPs looking for and exploiting vulnerabilities. Security teams can assess their exposure as they monitor progressive threat activity.

How it works

Our insight is delivered through our API, integrations, and visualizer from two distinct datasets:
Internet background noise

Internet background noise

GreyNoise’s internet-wide sensor network passively collects packets from hundreds of thousands of IPs seen scanning the internet every day.

Companies like Shodan and Censys, as well as researchers and universities, scan in good faith to help uncover vulnerabilities for network defense. Others scan with potentially malicious intent. GreyNoise analyzes and enriches this data to identify behavior, methods, and intent, giving analysts the context they need to take action.

Rule It Out (RIOT)

RIOT (common business services)

RIOT provides context to communications between your users and common business applications (e.g., Microsoft O365, Google Workspace, and Slack) or services like CDNs and public DNS servers. These applications communicate through unpublished or dynamic IPs, making it difficult for security teams to track. Without context, this harmless behavior distracts security teams from investigating true threats.

Integrations

Customer love

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HURRICANE LABS

"Using GreyNoise Intelligence helps the Hurricane Labs team eliminate background noise and focus on the most actionable and relevant alerts for our customers. Rather than presenting our analysts with even more data to investigate, GreyNoise decreases the volume of alerts that are triggered by 25% - which makes for a happier and more effective SOC team."

— Director of Managed Services
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EXPEL

"RIOT arms our analysts with a simple, colorized tool for surfacing enrichment details so the SOC can quickly spot and dispatch non-threat activity."

— IAN COOPER & EVAN REICHARD, DETECTION AND RESPONSE ENGINEERING
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ANONYMOUS

"GreyNoise has proved to be a high-bang-for-the-buck data source for alert triage. The team is motivated, innovative, and great to work with."

— ANONYMOUS, Higher Education Center
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ANONYMOUS

"GreyNoise helps our users reduce time to remediation by quickly pointing out noisy activity related to scanners, botnets or harmless business services—saving the analyst from chasing irrelevant deadends and leaving more time to investigate true threats."

— ANONYMOUS, Analytics Organization
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Community Love

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