The Silent Risk of SID-500: Why LAPS Alone Is Not Enough
The built-in local Administrator account (SID ending in -500 ) is a well-known target for attackers. Even in environments where Microsoft LAPS is deployed, this account can still be manually enabled, abused temporarily, and then disabled again — often without immediate visibility. This PowerShell solution adds an extra defensive layer by continuously monitoring and disabling the SID-500 account if it becomes active. 📌 Key Points Continuously monitors the built-in Administrator account (SID-500) Automatically disables the account if it becomes active Runs silently in the background as SYSTEM Complements Microsoft LAPS — does not replace it ⭐ What This Script Does 1️⃣ Creates a Persistent Monitor Script Writes DisableSID500Monitor.ps1 to C:\ProgramData Checks the SID-500 account state on every execution 2️⃣ Creates a Scheduled Task Task name: DisableSID500Monitor Execution in...