Apple has stopped shipping security updates for QuickTime for Windows. The Department of Homeland Security’s U.S. Computer Emergency Readiness Team urges Windows users to junk Quicktime. Apple has been distancing itself from QuickTime on Windows for some time now. In 2013, the Cupertino, Calif. tech giant departs all developer APIs for Quicktime on Windows in favor of the browser-based attacks on Quicktime, which can be used to remotely compromise Windows computers. The only mitigation is to uninstall Quicktime for Windows, US-CERT says.”]
Source: https://krebsonsecurity.com/2016/04/us-cert-to-windows-users-dump-apple-quicktime/