Facebook’s latest data blunder is mind-blowingly bad, and users should be burning with rage
Facebook greedily gobbled up information about people’s entire online identities but didn’t do enough to protect that information. It has profited from data for too long and deserves to lose billions off its market cap for not taking due care.
So for sure Instagram (Facebook-owned) but also major sites that use your Facebook ID to authenticate like Tinder, Airbnb, or Spotify.
That means that once a hacker had access to a person's Facebook account, they could make their way through the rest of their digital life if it had been connected via Facebook. I've said it a million times… never use Facebook to log into anything.