Servers operated by Ubuntu and its parent company Canonical have been down for more than a day, following a "sustained, cross-border attack" (Dan Goodin/Ars Technica)

Ubuntu’s services have been offline after a sustained, cross-border distributed-denial-of-service attack, with its servers taken down for an extended period. The outage has persisted for more than a day, exceeding fifteen hours of continuous disruption across the company’s infrastructure.

本文综合以下全部报道写成，而非依据任何单一来源。