Ubisoft has temporarily shut down Rainbow Six Siege servers worldwide after what the company describes as a major security incident, following reports of a widespread hack affecting live services.

Players across all platforms began reporting sudden disconnections and extended downtime earlier today, with Ubisoft later confirming that servers were taken offline as a precautionary measure while the situation is investigated. Sources familiar with the matter suggest the breach targeted backend infrastructure rather than individual player accounts, though the full scope of the attack has not yet been publicly disclosed.

In a brief statement, Ubisoft said it is “working urgently to assess the impact and secure affected systems,” adding that updates will be shared once more information is available. At the time of writing, there is no confirmation of personal data being compromised, but players are being advised to remain cautious until the investigation concludes.

Rainbow Six Siege remains one of Ubisoft’s most active live-service titles nearly a decade after launch, with a competitive scene that relies heavily on uninterrupted server stability. The sudden outage has already forced the postponement of ranked play, community tournaments, and scheduled esports activities.

This incident comes amid increasing concerns across the games industry regarding live-service security, with high-profile multiplayer titles becoming more frequent targets for coordinated attacks. How Ubisoft responds and how quickly Siege services can be safely restored will likely be closely watched by both players and rival publishers alike.

Ubisoft has not provided an estimated timeframe for when Rainbow Six Siege servers will return online.