It’s not only a primer on fuzz testing (a method of finding bugs) but it’s also a how-to on automating the setup using Nix (which is a lot of things, including a kind of package manager ...

Microsoft is now testing ... the OpenSSH project has released security updates for two vulnerabilities: a man-in-the-middle (MitM) flaw (CVE-2025-26465) and a denial-of-service bug (CVE-2025-26466).