DDoS Attack Takes Ubuntu Websites and Security Services Offline for Over 4 Hours

Canonical and Ubuntu experienced a sustained DDoS attack that made public websites and security information endpoints intermittently unavailable for 4 hours and 12 minutes; package repositories, PPAs, installation images, the Snap Store, and single sign-on services were reported operational and unaffected. The report provides no technical traffic, mitigation, or attribution details, and contrasts this narrower October disruption with a wider May incident that affected additional services.