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Internet Security Alert - Red Screen - Call MS Tech Support

Feb 17, 2018 11:57PM PST

I've been receiving these internet security alerts since last week; they're annoying; the screen turns red and this message is repeated several times telling me my computer has become infected; do not attempt to shut your computer down; blah, blah, blah.

I did a forced shut down then a restart and immediately scanned first with SuperAntiSpyware version 6.0.1254 and then with Avast free antivirus and both scans detected nothing; no security threats. It mainly happens while I'm checking my AT&T webmail. I'm currently using Google Chrome as a browser.

Anything else I should be doing to check to see if my Dell laptop is infected? My laptop is a Dell Inspiron 15-3000 Series and currently I'm using WIN 7 Pro which came installed on it; there is also WIN 10 but I like using WIN 7 Pro because it acts like the OS on my previous laptop which had WIN Vista.


BigSteve
02/18/18

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Re: security alert
Feb 18, 2018 12:47AM PST
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Possibly a browser extension or adware
Feb 20, 2018 1:27PM PST

BigSteve -- What you're seeing may not be harmful malware; more like adware or an unwanted extension. That's still not good, but doesn't necessarily mean your PC has been compromised by something like ransomware, etc. or that you need to "nuke and restore."

That being said, you will want to tread with caution to make sure that you eliminate whatever it is, and take the appropriate action.

So I'd recommend disconnecting the machine from the net and checking Chrome to see if you have any unwanted extensions there. You may want to try resetting your Chrome profile (make sure you have anything backed up that you need to) and signing in again, which may remove whatever unwanted extension is causing the problem.

It's also possible that whatever this is, it's re-propagating itself. A boot-time scan can come in handy for spotting stuff like this!

Finally, you'll want to do a full scan of your PC with Avast -- you have the option of running a Quick Scan or a Full Scan -- run the Full one (it will take much longer but will scan everything on your PC)

One last question -- Are you running Avast as your active scanning program? If so, which shields did you have enabled? Or were you running something else, Defender, etc?

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