Bleeping Computer report on the Level 7 DDoS attack on Microsoft services, including Azure Portal and M365, by a group linked to Sudan. Or possibly that is a cover for a Russian group.
https://www.bleepingcomputer.com/news/microsoft/microsoft-confirms-azure-outlook-outages-caused-by-ddos-attacks/
https://www.bleepingcomputer.com/news/microsoft/microsoft-confirms-azure-outlook-outages-caused-by-ddos-attacks/