This from mashable.com:
Jani (his parents withheld his last name), figured out a way to get into Instagram’s servers and delete text posted by Instagram users, Finnish news site Iltalehti reported.
Jani was rewarded $10,000 by Facebook as part of its bug bounty program, which offers cash rewards to people who find bugs and flaws in Facebook’s digital infrastructure. That includes the Facebook-owned Instagram.
Full story here: