Cyber Risks · GreyNoise Blog

Use Case: Threat Hunting & Grey Noise

Summary: GreyNoise describes how its internet-wide sensor network passively collects packets from hundreds of thousands of IPs seen scanning the internet every day, then enriches that data to identify behavior, methods, and intent. The company says this lets threat hunters filter out harmless scanning and known business-application traffic so they can focus on events targeting their organization, and it tracks IPs tied to Tor exit nodes, commercial VPNs, and common services like Microsoft O365, Google Workspace, and Slack.

Bottom line: Every day hundreds of thousands of devices probe every routable IP address on the internet, and without context that volume buries the events that are actually aimed at you; GreyNoise's pitch is that separating the two is the difference between triaging noise and hunting adversaries.

Read the original at GreyNoise Blog ↗

Topics
Detection & Response
Related
YARA-X 1.23.0 Release, (Sun, Nov 15th) Cyber Risks · Nov 15, 2026