Puffchat
From Just Solve the File Format Problem
Puffchat is a Snapchat competitor, claiming to offer secure chatting with messages that self-destruct after they are read. Unfortunately, somebody figured out that its API wasn't really very secure, and its messages didn't really self-destruct. The founder of the service reacted by going berzerk and making legal threats against anybody who mentioned these flaws on the Web or Twitter, demanding that all such mentions be taken down immediately. Of course, this led to the information being disseminated much more widely, per the Streisand Effect.
