https://matthildom.dev/Security Labs, Vulnerability Management, and Malware Analysis writups by Matt Hildom 2026-10-20T14:50:22-04:00 Matt Hildom https://matthildom.dev/ Jekyll © 2026 Matt Hildom /assets/img/favicons/favicon.ico /assets/img/favicons/favicon-96x96.png 2026-10-20T14:00:00-04:00 2026-10-20T14:43:16-04:00 https://matthildom.dev/posts/emergency-rhel9-rebuild/ Matt Hildom

Details about the organization, hostnames, network layout, and vendor-specific configuration have been left out or generalized on purpose. TL;DR A research data platform we ran on a single RHEL 7 server was months out on our migration list. Then the vendor warned us that a threat actor was actively exploiting legacy, internet-exposed instances of it. We locked it down with compensating contr...