It appears that 313 Team is claiming credit for this. https://www.pcmag.com/news/pro-iran-hackers-hit-ubuntus-canonical-with-ddos-float-extortion-demand https:

It appears that 313 Team is claiming credit for this. https://www.pcmag.com/news/pro-iran-hackers-hit-ubuntus-canonical-with-ddos-float-extortion-demand https://www.pcmag.com/news/pro-iran-hackers-hit-ubuntus-cano... https://www.reddit.com/r/cybersecurity/comments/1t0jf3p/313_team_claims_ddosextortion_attack_on_canonical/ https://www.reddit.com/r/cybersecurity/comments/1t0jf3p/313_...