Microsoft is reminding everyone that as of Jan 12, 2016, Internet Explorer 10 and below will officially reach their end of life. What this means is that any new security flaws or exploits found after tomorrow will not be fixed by Microsoft.
Internet Explorer 11 is the only version of IE that will continue to receive security and software updates from Microsoft. Microsoft is urging everyone to adopt their latest browser Microsoft Edge.
For more info on the end of life reminder and what steps to take, please visit: https://www.microsoft.com/en-us/WindowsForBusiness/End-of-IE-support