Gaining access to Office 365 user data without credentials

You read the title right, there is an easy way to gain access to a user’s Office 365 mailbox, attachments, and OneDrive data without stealing a username and password. This kind of attack is starting to appear more and more to replace the traditional phishing of credentials. In this blog post, I will demonstrate how this process works, and what you can do to prevent it in your Office 365 tenant.

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