One other thing - Microsoft's written testimony to the US House says, quoting, bolded by MS:
"Before I say anything else, I think it’s especially important for me to say that Microsoft accepts responsibility for each and every one of the issues cited in the CSRB’s report. Without equivocation or
hesitation. And without any sense of defensiveness."
Counterpoint: they publicly disputed the report in the media. https://www.theverge.com/2024/4/25/24139914/microsoft-cyber-security-incidents-trust-report