I'm no tech whiz, but the news about a newly-discovered online vulnerability seems pretty important. It's called "Heartbleed."
In fact, Heartbleed has the potential to be one of the biggest, most widespread vulnerabilities in the history of the modern web. Frustratingly, however, because the problem is technical — very technical — it's difficult for regular users to understand why this vulnerability is a big deal, what services have been vulnerable in the past and what services remain vulnerable now.
Writing about Heartbleed, security expert Bruce Schneier says "'catastrophic' is the right word. On the scale of 1 to 10, this is an 11." That's about right.
The best part? The vulnerability has been around since 2011.
You're advised change your passwords.
Here's a list of sites and the effects. And, yes, the most popular websites are affected.