Ubuntu infrastructure has been down for more than a day
The outage has hampered communication concerning a critical vulnerability that gives root.

TL;DR
- Ubuntu and Canonical servers have been down since Thursday morning.
- A group sympathetic to the Iranian government claims responsibility for a DDoS attack, using a service called Beam.
- The outage occurred hours after the release of potent exploit code for a vulnerability affecting Linux distributions.
- Attempts to access Ubuntu and Canonical websites and download OS updates from official servers have failed.
- Updates are still available from mirror sites.
- The prolonged outage has limited Ubuntu's ability to communicate security guidance to users.
- DDoS-as-a-service operators have been a persistent issue for decades, with limited success in shutting them down.