If you have any connection to social media, you’ve heard about the “Heartbleed” security bug. Although it sounds like a killer finishing move, it actually refers to a glitch in SSL that allows hackers and the NSA (among other alleged users who took advantage of the vulnerability) to send a short inquiry and receive more information than they should have had access to, including inquiries and responses from other users.
There are some great posts describing what Heartbleed does, and the services that are most affected by it. Two of the more useful posts are this comic which explains Heartbleed in the simplest of terms, and this one, which has a list of “secure” sites with information about 1) whether that site was affected, and 2) whether you should change your passwords now or later.