For multiple boot folks using Windows …
Many folks have probably moved on and no longer use Apple’s Quicktime for playing videos. That’s a good thing since Apple no longer supports Quick Time.
Here’s a link to the HomeLand Security Warning Written up in the Washington Post
If, by chance, you’re curious about if you actually have it installed and possibly forgotten
or
if you’d like a quick check on popular plugins you might have use this link for a quick sanity check and links to upgrade versions of what you have installed.