SWLS libraries have reported a few instances of fake Microsoft support phishing scams on library computers during May and June.
The appear as typical pop-ups. The best thing to do is reboot ASAP. If the PC was protected by Deep Freeze, further issues can probably be avoided. If this happened on an unprotected PC and the user clicked anywhere inside the pop-up box, that PC would then be infected. In addition to the tools we already have against these types of attacks, EDUCATION is the best protection. Attacks are rising and becoming more effective. Stay on guard.
Here is a sample phishing scam pop-up

“Phishing email messages, websites, and phone calls are designed to steal money. Cybercriminals can do this by installing malicious software on your computer or stealing personal information off of your computer.
Cybercriminals also use social engineering to convince you to install malicious software or hand over your personal information under false pretenses. They might email you, call you on the phone, or convince you to download something off of a website.”
Reference: Microsoft Safety and Security Center, How to recognize phishing email messages, links, or phone calls
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