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GreyNoise Labs

labs.greynoise.io

This is a place to catch up with cutting-edge research from GreyNoise, check out our latest experiments , and meet the team .

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Visit labs.greynoise.io → On Hacker News Feb 2026 – Feb 2026

Security & Privacy 1Networking & Internet 1

1

The Day the Telnet Died

On January 14, 2026, global telnet traffic observed by GreyNoise sensors fell off a cliff. A 59% sustained reduction, eighteen ASNs going completely silent, five countries vanishing from our data entirely. Six days later, CVE-2026-24061 dropped. Coincidence is one explanation.