Microsoft has announced some new security features for Office 365 that can help users mitigate the damage done by ransomware and other malware infections. File Recovery and Anti-Ransomware features began rolling out starting today and will be available to all Office 365 users soon, while features to help keep your information secure and private (including password protected sharing links, email encryption, and prevent forwarding) will start rolling out in the coming weeks. The new features were initially introduced for OneDrive for Business but that the company is now rolling them out to anyone who has signed up for an Office 365 Home or Personal subscription.
Source: https://thehackernews.com/2018/04/microsoft-office-ransomware.html