There are so many that it's just not funny. :(
• https://www.nbcnews.com/tech/security/scathing-federal-repor...
• https://www.wiz.io/blog/bingbang
• https://www.theverge.com/2023/7/12/23792371/security-breach-...
• https://www.wiz.io/blog/midnight-blizzard-microsoft-breach-a...
These are just the first few I've found for the last 12 months.
There are more if you go back even 12 months further, and I'm pretty sure the above aren't the complete list for the last year anyway.
Microsoft are actually really bad at this Cloud "security" thing. :( :( :(