>Beginning in late November 2023, the threat actor used a password spray attack to compromise a legacy non-production test tenant account and gain a foothold, a

>Beginning in late November 2023, the threat actor used a password spray attack to compromise a legacy non-production test tenant account and gain a foothold, and then used the account’s permissions to access a very small percentage of Microsoft corporate email accounts I have so many questions from this sentence alone. What did they password spray? Microsoft's internal identity provider? Was the non-prod system internet facing? Why isn't MFA enforced?