Wouldn't a stronger license than MIT prevent this?
I understand that MIT doesn't allow for misattribution of work, but I feel like its inherent permissiveness makes that step not feel like much of a reach.
Also, maybe I'm too petty, but I would have absolutely named and shamed the specific MS engineers involved with this mess, and I'd be looking to get in touch with their immediate manager. Can't help but imagine that it would be a career limiting move for the engineer that pretended to be all buddy buddy. Good luck passing off my work for your own promotion, asshole. Especially when you failed to cover your tracks this dramatically.