An integrated threat protection solution designed to detect, investigate, and respond to cyber threats across Microsoft 365 services.
Hi Carolrae,
From what you describe, this appears to be a tech support scam. The pop‑up with a phone number and the warning not to close your computer is a classic tactic.
You weren’t hacked just by clicking the link, the danger is if you installed software or gave sensitive information. Since you called the number, treat this seriously: scan for malware, change passwords, and alert your IT department. That way, you’ll be safe and your school district’s data stays protected.