As of January 11th, 2016 Microsoft has announced the end of life for Internet Explorer 8, 9, and 10. This means it will no longer receive any updates or security fixes. You are advised by Microsoft if you are a user to upgrade to Internet Explorer 11 or switch over to Microsoft Edge as if you continue using older versions of Internet Explorer you may become vulnerable to various types of malicious attacks.
Source: https://www.microsoft.com/en-us/WindowsForBusiness/End-of-IE-support