Servers across multiple Ubisoft games went down earlier today in what the company blamed on a DDoS attack.

Ubisoft Support first notified players of an unknown issue at 9:49 EST this morning. They released a statement detailing they were aware of issues “impacting a number of our online services for Rainbow Six Siege, For Honor, Steep, Ghost Recon Wildlands, Uplay PC, and other online titles.”

It took nearly an hour before it was recognized as a DDoS attack. A Distributed Denial of Service attack “occurs when multiple systems flood the bandwidth or resources of a targeted system, usually one or more web servers. Such an attack is often the result of multiple compromised systems (for example, a botnet) flooding the targeted system with traffic.” Ubisoft recognized this as a frequent occurrence for online services, and that this specific attack focused on connection to Ubisoft games and server latency.

At 11:23 EST, Ubisoft reported that the issue was resolved.