internet-scanning
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GreyNoise Built a Business by Telling Security Teams What to Ignore
Most cyber vendors sell more alarms. GreyNoise built thousands of patient decoys, learned the rhythm of indiscriminate attacks, and made a business out of the far more useful answer: not this one.
Censys
Censys is a cybersecurity company that runs one of the most comprehensive real-time maps of the public internet. Born from the ZMap internet-scanning project at the University of Michigan, its Internet Intelligence Platform scans billions of IP addresses and certificates to power attack surface management, threat hunting, and exposure management. Trusted by more than half of the Fortune 500 and by U.S. intelligence agencies, Censys helps defenders see what attackers can see - unknown assets, exposed services, and adversary infrastructure - so they can find and fix risk before it is exploited.