I use a Mac (running macOS Sierra). Yesterday I was watching a movie online from some not-so-trustworthy website and when I clicked the pause button, a tab appeared and suddenly disappeared.
From that moment onwards, whenever I open any https site, it throws an error named "Your connection is not private". It doesn't matter if I use Chrome, Safari or Mozilla Firefox, all of them throw the same error. A moment ago, when I opened google, it opened a tab with the url: Gstatic.com/generate_204 by itself!
The interesting thing is that if I use Tor or if I use a VPN and change my location to anywhere else, all websites start working!. Why does this happen?
Things I have tried:
1) Checked the date and time - They are all correct.
2) Deleted my cache and restarted my computer and browser.
3) Tried finding some unwanted installed applications or some extensions on my chrome that I didn't install - I couldn't find any.
Could someone PLEASE provide some help! I am scared to death that my mac has caught some virus and all my credit card information might be at risk!