We've had a fun incident yesterday where someone accidentally used a Set cmdlet instead of Get and disabled approx. 70 accounts. Luckily it was all IT staff, so manageable once the initial panic was over and we worked out what had happened.
This has raised an interesting point though, is there a way to stop people from applying updates to multiple accounts?
I cannot think of anything as updates are applied one record at a time, but would be interested to hear if anyone has found a solution for this.