Box Shields security controls now extend to Microsoft Office 365 web editors. End users can open and edit a classified file within Office 365 applications online. At the same time, admins can prevent data leakage by restricting users from printing, downloading, and sharing operations. There are no agents required on user devices. By leveraging our investments in secure preview technology, best-of-breed integrations, and native security controls, Box Shield provides a frictionless experience for protecting your most valuable content.”]
Source: https://blog.box.com/last-mile-security-box-microsoft