Discord, a messaging platform popular with gamers, says official ID photos of around 70,000 users have potentially been leaked after a cyber-attack.
The platform, which has more than 200 million users worldwide, says hackers had targeted a firm that helped to verify the ages of its users but the Discord platform itself was not breached.
People can provide ID photos to verify their age on Discord - a networking hub for players to chat and share files with others in the gaming community.
The leaked data may involve personal information, partial credit card details and messages that were exchanged with Discord's customer service agents, the San-Francisco-based company says.