No idea what you're referring to — we have no interactions with Microsoft about security issues, so whatever "score" that is, it's utterly meaningless — but they can find the information we make available about security and privacy on these pages:
@mrinschen In the future, don't delete your posts: the thread is still there, it can be informative for others, and the answers can be difficult to understand without the original question.
Upgrade Storage
https://www.zotero.org/support/security
https://www.zotero.org/support/privacy
We're not able to accommodate requests for custom documentation beyond that.