A provocative dating app designed to let women anonymously ask or warn each other about men they'd encountered rocketed to the top spot on the U.S. Apple App Store last week.

Around 72,000 selfies and ID photos were exposed after being stored in a "legacy data system" containing information from more than two years ago. Recent DMs might also have been accessed.

Dating safety app Tea experienced a second data breach in as many weeks, exposing over a million sensitive messages between users.