Microsoft Teams is the hub for teamwork in Microsoft 365. It enables instant messaging, online meetings with audio and video calling support and offers extensive web conferencing capabilities. In addition, Teams provides file and data collaboration and online storage. For core productivity scenarios Microsoft Teams relies heavily on online services like SharePoint and Exchange Online. Data shared via Teams is stored in SharePoint and can be accessed from virtually any device and from anywhere. Stored in the cloud, it is exposed to greater risks and therefore needs extra protection. Client-side encryption is a viable means of ensuring protection of data stored in hosted environments such as Microsoft Teams and SharePoint Online.