I've spoken with a few people recently who, if they were even aware of the recent Apple security bug, don't seem to appreciate the magnitude of it.
It's basically the worst security bug in the history of security bugs.
If you are using a Mac running 10.7 or later, an iPhone 4 or later, or an iPad 2 or later, you have to upgrade your OS, right now.
If, like me, you've been putting off upgrading from iOS 6 to iOS 7, bummer. You don't have a choice now.
Here's a site that may test whether you're vulnerable.
Jeff Weinstein said, "Thanks, Apple, for making the Netscape Random Number Seed bug look minor."
Someone else said, "If you want a tour of of the Oval Office, just write 'Mr. President' on your t-shirt. They probably haven't upgraded yet."
It's egregious enough that enemy action isn't entirely out of the question.