A popular social-sharing app has been hit by hackers.
Account information for 4.6 million snapchat users appeared online Tuesday.
The app lets people share photos or short videos that disappear after a few seconds.
User names and at least partial phone numbers were available for download on a website.
By late Wednesday morning, that site had been suspended.
The hackers released a statement to technology blog, "Techcrunch."
In it, they said they released the information in an effort to put pressure on snapchat to beef up security.