Security Optus's deadly failed firewall update keeps getting worse "Significant consequences" promised, regulators scramble, process reviews – all due to a single failed update. Phillip de Wet Sep 22, 2025 - 2 min read Image credit: https://unsplash.com/@rgaleriacom Get the full story: Subscribe for free Join peers managing over $100 billion in annual IT spend and subscribe to unlock full access to The Stack’s analysis and events. Subscribe now Already a member? Sign in