I'm reminded of Storm-0558 [1] where a stolen signing key was able to forge authentication tokens for any MSA / Azure AD / Government AD user. They downplayed the severity. Just imagine if that level of access was used to pull a Stryker on a nation-wide scale. That is an economic disaster waiting to happen.
[1] https://www.microsoft.com/en-us/security/blog/2023/07/14/ana...