Windows defender security center window has popped up on my screen, saying threat detected trojan spyware on the computer has been blocked for security reasons is this a scam.

Question

Windows defender security center has popped up on my screen, saying 'threat detected trojan spyware' and my computer was blocked is this a scam? Its asking me to contact a Microsoft support no.

Answer 1

That's a 100 % fake warning - a so-called Tech Support scam attempt.

"If your screen suddenly fills with scary pop-ups you should immediately close your browser (try pressing ALT+F4 if you can't do it with your mouse). If you can’t close your browser try restarting your computer."

"Remember that real error messages from Microsoft, or other big tech companies, never include phone numbers for you to call them."

> Protect yourself from online scams and attacks - Microsoft Support

Suggest also having a look at How to spot a tech support scam - Microsoft Support

To prevent even seeing such fake alerts, use a good content/ad-blocker such as free uBlock Origin.

Answer 2

Hi Jeffrey,

That does sound bit like a scam... "your computer is blocked" and not the virus, to call someone... - that all doesn't sound legit. A screen shot is usually pretty good at showing if it is fake or not. Can you provide?

If it was a legit detection, it will also show up in your protection history.

Select Start > Settings > Update & Security > Windows Security and then select Virus & threat protection > Protection history.

It wouldn't hurt to do a quick scan while you are there too.

More at Stay protected with Windows Security - Microsoft Support

Hope this helps,

Greg

Answer 3

Hi Greg thanks for the response, all is good now restarted the computer and the pop up disappeared, did a quick scan and everything seems to be AOK.

thanks again jeff