Klarna users are being signed in to random accounts

MS Exchange outlook web interface sometimes showed me completely unrelated mailbox content upon login: folders, list of messages, read status, subjects, etc. Trying to open email never worked though and the whole problem goes away after page refresh.

Sometimes I see my own mails before logging in for a short while in Outlook web app. They have some issues.

I like how when the session expires and you login again you get redirected to the random resource your browser requested when it just expired. So instead of the mail view you sometimes get the new mail jingle or some minified js. Makes me feel better about my own imperfect software