Under Armour announced on Thursday that its popular diet tracking app MyFitnessPal has been hacked. The company said that the data breach occurred in February, and involved the usernames, email addresses and [hashed] passwords of some 150 million user accounts.
MyFitnessPal is a popular health and fitness iOS app and website that’s used by many iPhone and iPad owners, and it is consistently among the top Health and Fitness apps in the App Store.
The team at MyFitnessPal became aware of the incident on March 25, and quickly started taking steps to determine the nature and scope of the attack. It says it is working with leading data security firms to assist in the investigation, and it has also notified law enforcement.
Under Armour acquired MyFitnessPal back in 2015 for nearly $500 million. At the time the app, which features a large crowdsourced food nutrition library and other useful diet-tracking tools, had around 80 million active users. That number has more than doubled since.
MyFitnessPal users will be required to change their passwords.