https://www.theregister.co.uk/2018/07/09/timehop_data_breach/

A service named “Timehop” that claims it is “reinventing reminiscing” in part by linking posts from other social networks probably wishes it could go back in time and reinvent its own security, because it’s just confessed to losing data describing 21 million members and can’t guarantee that the perps didn’t slurp private info from users’ social media accounts.

“On July 4, 2018, Timehop experienced a network intrusion that led to a breach of some of your data,” the company wrote. “We learned of the breach while it was still in progress, and were able to interrupt it, but data was taken.”