[SOLVED] Captcha checks (Mozilla)

[Sveta7]

This is how things go, recently I've had some malware/ransomware in my pc because of my carelessness and stupidity, that has been dealt with by a complete format of all drives and a fresh win 10 install also a motherboard bios flash, but this is the current problem, with a fresh install google search on mozilla started showing captcha verification because of suspicious activity on my network, but only on my pc, other devices that are connected through wifi had no such captcha check, few days passed and that captcha check disappeared, and few days passed without it and now it started poping up on YouTube only, other browsers don't show it, just mozilla...

What's causing this and how to deal with it?
Is my wifi network safe? I've also reset the router and changed all the passwords...

 

[SamirD]

You're infected again. Use something like deepfreeze to lock down your system before you connect it to the Internet after your reinstall.

 

[bill001g]

I get captcha a lot on one of my machines. That machine always runs over the vpn and I have things set to filter or purge cookies and other trackers. Google in particular attempt to track even when you are using a vpn.

 

[Sveta7]

You're infected again. Use something like deepfreeze to lock down your system before you connect it to the Internet after your reinstall.

But where did the virus come from, when everything was cleaned, and antivirus doesn't detect anything?

 

[SamirD]

But where did the virus come from, when everything was cleaned, and antivirus doesn't detect anything?

Every single public facing IP in the world has multiple attacks coming at it every second all day long from all over the world. The real question is how we all don't have viruses.