Remember that Bill Murray movie, Groundhog Day? Yeah, well…that for Facebook. The world’s biggest social media platform suffered another security breach as a staggering 50 million users were compromised by a sophisticated zero-day exploit that allowed hackers to steal account access. So, if you woke up anxious to check on Grumpy Cat’s (that’s the famous online cat, as if you didn’t know?) status and found yourself locked out of your Facebook account, you definitely weren’t alone. The social media giant admitted that an unknown hacker made away with secret access tokens for a user base as big as the population of Spain. As a security measure, Facebook reset all access tokens for the affected accounts, requiring users to login to Facebook and any apps that use Facebook for credentials.

Ned? Ned Ryerson! (classic Bill Murray)