Millions of phone numbers and usernames were exposed in a hack of an app that’s especially popular among teens.

Snapchat, which is among the newer social media apps that experts say is diluting Facebook’s popularity, is a phone messaging app that allows users to send photos or brief messages. The appeal of the app is that it only hosts up to 10 seconds before it’s deleted.

But Gibson Security before Christmas posted information on its website that showed how user information could be compromised due to a security flaw on Snapchat’s part. Read more…