I have Chrome browser installed and sometime in the last week it starts randomly open popup windows as I clicked in different sites. I suspect I'd been infected by some trojan.
I've scanned my machine with ClamAV and found nothing.
Can someone tell me how to troubleshoot this problem?
Go to chrome://settings or just go to settings, and go to the very bottom of the page click advance settings and then click reset to default browser settings.
that might work. good luck
I feel that you might not have the pop-up blocker turned on on Chrome. Now to activate it, here is what you do.
Type chrome://chrome/settings/content on your addressbar (in chrome), then scroll down until you find Pop-ups there check Do not allow any site to show pop-ups option.
If problem persists, I'd suggest re-installing Chrome.
Hope this was of some help.
Have you installed any suspicious chrome extensions? Type chrome://extensions/ in URL, have a check.
Press Ctrl+Shift+J to open the chrome developer console, sometimes it will output some useful information.
Further, check the network column of the console, the trojan may come from network.
Make a screenshot of it ,so you can provide more details to let others help you.
It's very normal to get pop-ups in browsers nowadays. You can activate, as others suggested, the native pop-up blocker in chrome. I, however, suggest you use an ad-blocker, which, as the name states, blocks ads (pop-ups included).
My vote goes to ublock origin:
https://github.com/gorhill/uBlock/releases
or
https://chrome.google.com/webstore/detail/ublock-origin/cjpalhdlnbpafiamejdnhcphjbkeiagm
