Microsoft is rolling out Built-In Protection to Defender for Office 365, a new feature that would automatically enable recommended settings and policies to make sure all new and existing users get at least a basic level of protection. Microsoft Defender for Office 365 (previously known as Office 365 Advanced Threat Protection or Office 365 ATP) provides Office 365 enterprise email accounts with automated attack remediation and defends them from various threats, including business email compromise and credential phishing.
Link: Microsoft: Office 365 will boost default protection for all users
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