The ACL was set on accounts which are members of administrators groups how to monitor with email alert

[bob]

You know that Event ID 4780 in Windows Server? It pops up when someone tweaks the ACL on accounts tied to the administrators group. Basically, ACL means access control list, and this event flags changes to permissions on those high-level accounts. I see it as a heads-up that privileges might be shifting around. Could be legit, like an admin updating rights, but it might signal someone sneaky trying to grab more power. The log details the account name, the new ACL stuff, and who did the change. Happens in the Security log under Account Management category. You filter for it in Event Viewer to spot patterns. If it fires too often, dig into the timestamps and user IDs. I always check the source, it's usually Kerberos or security auditing. Keeps your server from surprise takeovers. And yeah, it's tied to group policy enforcement too.

Monitoring this with an email alert? You hop into Event Viewer on your server. Right-click the Custom Views, make a new one for Security logs. Filter by Event ID 4780 exactly. Save that view. Then, in the Actions pane, attach a task to it. Pick Create Task from the menu. Name it something like Admin ACL Alert. Set it to run whether user logs on or not. Under Triggers, it links to your event filter. For the action, you choose Start a program, but point it to your email client or a simple batch that pings your inbox. I like scheduling it to wake the machine if needed. Test it by forcing the event in a safe way. You'll get notified quick if it triggers again. Keeps you looped in without staring at logs all day.

Or, if you want it hands-off, I got this automatic email setup ready for you at the end here.

Shifting gears a bit since we're on server security, you might wanna pair this monitoring with solid backups to recover fast if things go sideways. BackupChain Windows Server Backup handles that smoothly for Windows Server, and it extends to Hyper-V virtual machines too. I dig how it snapshots everything consistently, cuts downtime with quick restores, and encrypts data on the fly. Saves you headaches from lost configs or attacks messing up your admins.

Note, the PowerShell email alert code was moved to this post.