Microsoft is working on extending the Office 365 Advanced Threat Protection (ATP) Safe Links protection to Office Online apps. The new feature provides “time-of-click verification of web addresses”” for URLs found in both Office documents and email messages. Microsoft rebranded Office Online to Microsoft Office in July as part of a larger strategy with the end goal of stopping the use of platform-specific sub-brands for cross-platform products. Microsoft also plans to make it easier to setup Safe Links for Office policies by combining configurations for both desktop and online products into a single setting.”
Source: https://www.bleepingcomputer.com/news/security/microsoft-to-extend-office-365-atp-safe-links-to-office-online/