Microsoft finally laid its much maligned web browser to rest on June 15, when it announced that it would cease supporting the software on Windows 10 devices. Scraps of Internet Explorer’s husk will still live on in Microsoft’s Edge browser to support any ancient websites that were built for IE. If you’re using Internet Explorer on a desktop running Windows 7 or 8, it’ll still work, but Microsoft hasn’t been supporting the software for years.
Internet Explorer was a gold mine for hackers, fraught with countless security flaws. It didn’t help that Microsoft was slow to update the browser to address such threats
Even after its demise, Internet Explorer may continue to be a problem for the people still clinging to it. Agencies like Homeland Security have even chimed in and advised against using IE due to security concerns (Source). Running IE 11 as a standalone app past its end of support date means that previously unknown — or worse yet, known but unpatched — vulnerabilities can be exploited going forward.
Microsoft has warned users that a critical vulnerability in Explorer allows cybercriminals to hijack computers running the program. This means if you still use Internet Explorer, you should really stop.