The Microsoft consumer signing key stolen by Storm-0558 Chinese hackers provided them with access far beyond the Exchange Online and Outlook.com accounts that Redmond said were compromised, according to Wiz security researchers.

https://www.bleepingcomputer.com/news/security/stolen-microsoft-key-offered-widespread-access-to-microsoft-cloud-services/

@ecksmc 🤬🤬🤬

@ecksmc a whole lot of tech companies migrated/outsourced to Microsoft for these services. They thought they were saving money and leveraging "really smart people to manage things." There's a whole lot of people scrambling in silicon valley right now. I'm glad not to be a my old company. Lots of intellectual property was just sitting around for the Chinese. Security is hard.