Your account can be potentially hijacked. I assume you didn't contact any people on the mentioned virus pop-up right? Kaspersky will never ask you to download it through advertisements, so that is most likely an issue. Uninstall the applications that you were asked to install and try these steps: 1. Check your browser for any add-ons or extensions you do not recognize and remove them. 2. Check your installed programs and see if there isn't anything suspicious that was installed lately (If there is, simply remove them). 3. Install any popular antivirus and do a quick scan (Majority of the providers do have free versions of their software). Or just use Windows Defender. It works really well in most cases. 4. Install and scan your PC with Malwarebytes and Hitman Pro to clean most adware. Afterward, see if the issue is gone. If not, we can try a more thorough solution.