Google Chrome is one of the most trusted Web Browsers that provide a user friendly environment and cyber security. Chrome has a ‘Voice Recognition’ feature, that use your system’s microphone and allows you to speak instead of typing into any text box, to make hands-free web searches, quick conversions, and audio translator also work with them. A malicious site has to do is get you to enable voice control for any legitimate purpose and shoot out a pop-under window disguised as an ad, to keep your microphone ‘ON’ As long as it remains open, every noise you make will be uploaded to the hacker’s server.
Source: https://thehackernews.com/2014/01/converting-google-chrome-into-bugging.html