The XZ backdoor: What security managers can learn

The report describes a supply-chain attack against the open-source XZ project where a malicious developer inserted a backdoor into updated releases that manipulates SSH to provide attacker access to customer networks; the backdoor was detected shortly after release by another developer and publicly reported. The piece emphasizes lessons for security managers including stronger third-party vetting, network monitoring, and security awareness to mitigate open-source supply-chain risks.