https://tech.newstatesman.com/security/timehop-breach-hackers-steal-4m-phone-numbers-and-21m-email-addresses

Cyber criminals have stolen the personal data of 21 million users of the social media service Timehop, it emerged last night.

The US startup, which lets social media users revisit posts from the same day in previous years, confirmed in a statement that a network intrusion led to a breach of names and email addresses. Around 4.7 million phone numbers were also taken.