I got a prompt to call Windows Security, is it real?

Most likely not.

It’s always a good idea to be cautious when clicking on links or calling phone numbers on dubious websites. These websites can be used to steal your personal information or install malware on your device. It’s best to avoid clicking on links or calling phone numbers from unknown sources.

If you’re unsure about a website or link, you can submit a ticket to get IT's opinion.

Do NOT call or click on links if you encounter a website like the one in the image below.