How the Azure Active Directory baseline security policy enforces multi-factor authentication for privileged administrator accounts in Office 365 and Azure AD.
Microsoft is rolling out a change from August 2017 for Azure Active Directory conditional access policies to begin applying to the Office 365 portal.
How to protect Office 365 administrator accounts by enabling multi-factor authentication (MFA).
A security researcher claims that Exchange has a vulnerability that allows Exchange Web Services to be accessed by bypassing multi-factor authentication.
