Cybercriminals are quick to exploit vulnerabilities in Adobe Reader, Flash and Java to infect users computers. We assumed that the threats posed to users were unaffected by their choice of browser. We looked at which browsers are installed by users according to operating system. Google Chrome has the highest number of users, Chrome typically runs under professional versions of Windows 7. Users of Internet Explorer most often encounter the adware browser extension extension, not-a-virus: Not-SweetIMaa-Win32-ScreenSaver.”]
Source: https://securelist.com/ksn-an-analysis-of-web-browsers/57767/