dev.to/tag/security· Sep 23, 2026· by Serguey Asael Shinder

The Subdomain You Forgot Is Somebody Else's Now

Open Original Article ↗
There is a microsite Nobody has opened it in two years. The team who built it The name still points there. That is the part A DNS record is not your property. It is a sentence about You deleted your side of it. The platform it points at So a stranger signs up, Real certificate. Consider who believes it. Your customers, obviously. But mostly your own staff, And consider what else Cookies you set on the parent domain Callback lists that end Trust that you granted to a name So take an inventory. Ev
🎯 Vulnerability: Web Security Vulnerability
💡 Defense Fix: Implement strict input validation, contextual output encoding, and enforce least-privilege authorization controls.
#sergueyasaelshinder#security#devops#webdev