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Canonical Websites Disrupted in Second DDoS Attack This Year

Securityweek •Eduard Kovacs • October 12, 2026

Canonical’s websites were disrupted last week by a distributed denial-of-service (DDoS) attack, months after a larger attack hit the Ubuntu maker’s infrastructure.

The company confirmed the attack on October 8 in a post on the Ubuntu Discourse forum. “Canonical’s websites are under a sustained distributed denial of service attack,” the company said, adding that some services might not be reachable at times.

The disruption was limited to Canonical’s primary web properties, OMG! Ubuntu reported. These included ubuntu.com, canonical.com, the Ubuntu blog and developer site, and Ubuntu’s security advisory pages and API.

Developer-facing services such as Launchpad and the Snap Store did not appear to be affected.

Canonical said on October 9 that its team was still bringing affected services back, though most were accessible again. OMG! Ubuntu put the total downtime at a little over four hours.

The company has not publicly shared information on the size or origin of the cyberattack. No one appears to have taken credit for the DDoS attack.

Canonical was hit by a more disruptive attack in late April. Launchpad and the Snap Store were among the services taken down, and some users could not install Ubuntu updates. The company described that incident as a “sustained, cross-border attack.”

A hacktivist group calling itself The Islamic Cyber Resistance in Iraq – 313 Team claimed responsibility for that attack. It’s unclear whether the two incidents are connected.

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Eduard Kovacs (@EduardKovacs) is senior managing editor at SecurityWeek. He worked as a high school IT teacher before starting a career in journalism in 2011. Eduard holds a bachelor’s degree in industrial informatics and a master’s degree in computer techniques applied in electrical engineering.

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This article is one source in a clustered incident — the cluster page carries the summary, timeline and every other outlet covering it.

Canonical Websites Disrupted by Second DDoS Attack in 2026 Canonical's websites were disrupted by a distributed denial-of-service (DDoS) attack on October 8, 2026, marking the second such incident this year. The attack caused over four hours of downtime for public-facing sites, including ubuntu.com and canonical.com, while developer services like Launchpad and the Snap Store remained operational. Canonical confirmed the attack via a post on the Ubuntu Discourse forum, stating that their team was working to restore services. The previous attack in April was more severe, affecting additional services and attributed to a hacktivist group. No group has claimed responsibility for the recent attack, and Canonical has not disclosed details about its size or origin. The company's distributed infrastructure helped mitigate the impact, allowing some services to remain accessible. 5 sources 40

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Canonical Websites Disrupted in Second DDoS Attack This Year

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