Microsoft is adding recommended security profiles for Exchange Online Protection (EOP) and Office 365 Advanced Threat Protection (ATP) later this month. These profiles will allow EOP admins to easily configure their users’ accounts with Microsoft recommended security settings and fend off spam email reaching their inboxes. Microsoft also enabled Authenticated Received Chain (ARC) for all for Office 365 hosted mailboxes to check authentication results within Office 365 and to improve anti-spoofing detection. In November, Microsoft announced the release of a new Office 365 ATP feature dubbed enhanced compromise detection and response.
Source: https://www.bleepingcomputer.com/news/security/office-365-to-get-microsoft-recommended-security-profiles/