It would appears that the DDoS attack affecting #Ubuntu is finally over, with statements from both Canonical and the claimed attackers. While the attackers threaten Cloudflare next, they continue to use their services to protect their booter service. Meanwhile, Canonical has not put anything but security and archive repos behind Cloudflare protection. It's unknown what other measures are in place for other resources.
https://discourse.ifin.network/t/ubuntu-services-under-attack/356