Most businesses believe MFA is enough to protect Microsoft 365 accounts. It isn’t. Attackers are now bypassing traditional authentication by stealing session tokens directly from user devices, giving them silent access to emails, files, and company data without triggering MFA prompts. In this article, we break down how token theft works, why it’s becoming one of the fastest-growing cyber threats, and the practical Microsoft 365 security strategies every organization should implement before it becomes a real incident.