Next week, Microsoft will stop supporting older versions of Internet Explorer including 8,9, and 10. The company announced that support will end on January 12.
In a post on its website (via Neowin), Microsoft says:
Beginning January 12, 2016, only the most current version of Internet Explorer available for a supported operating system will receive technical supports and security updates. Internet Explorer 11 is the last version of Internet Explorer, and will continue to receive security updates, compatibility fixes, and technical support on Windows 7, Windows 8.1, and Windows 10.
Internet Explorer 11 offers improved security, increased performance, better backward compatibility, and support for the web standards that power today’s websites and services. Microsoft encourages customers to upgrade and stay up-to-date on the latest browser for a faster, more secure browsing experience.
The company tells users to make sure to take action before January 12. Otherwise, you're setting yourself up to be victim to malware and other exploitation of vulnerabilities.
There's a Windows lifecycle FAQ sheet here.
Image via Microsoft