GreyNoise Labs company blog

The Day the Telnet Died

by hrbrmstr & 🔮Orbie✨ labs.greynoise.io 6 min read

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.

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Networking & InternetSecurity & Privacy2026

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