Yesterday a user told me they couldn't log in to my parliamentary monitoring site. On investigating, I found that Microsoft email security was logging in on behalf of my user by executing a POST. This broke the single-use sign-on link. Executing POSTs is usually considered unacceptable, and in this way Microsoft again transgresses an important norm. Here's how to deal with the specific POST problem & what might be done about these transgressions in general: https://berthub.eu/articles/posts/shifting-cyber-norms-microsoft-post/
@bert_hubert You're nowhere near harsh enough on the "changing norms" that are direct violations of consent and entirely one-sided, not agreed upon by parties on both sides.
@bert_hubert In your specific example here, Microsoft should be criminally prosecuted in US under CFAA, for using someone else's credentials to log in without authorization.