16. December 2021
On December 14th, 2021, John Gruszczyk, a technical product manager at Microsoft (MS), announced, that end-to-end encryption (E2EE) is now generally available for MS Teams calls between two users. MS launched a public preview of E2EE for calls back in October, after announcing the option earlier in 2021.
IT administrators now have the option to enable and manage the feature for their organization once the update is implemented. However, E2EE will not be enabled by default at the user even then. Once IT administrators have configured MS Teams to be used with E2EE enabled, users will still need to enable E2EE themselves in their Teams settings. E2EE encrypts audio, video and screen sharing.
Certain futures will not be available when E2EE is turned on. These include recording of a call, live caption and transcription, transferring a call to another device, adding participants, parking calls, call transfer, and merging calls. If any of these features are required for a call, E2EE must be turned off for that call.
Currently, MS Teams encrypts data, including chat content, in transit and at rest by default, and allows authorized services to decrypt content. MS also uses SharePoint encryption to secure files at rest and OneNote encryption for notes stored in MS Teams. E2EE is particularly suitable for one-on-one calls in situations requiring increased confidentiality.
MS also published an in depth explanation of how this option can me turned on.
With this step, MS is following the example of Zoom, which launched E2EE in October and is making it available for larger group sessions (up to 200 participants).
20. November 2018
A Data Protection Impact Assessment (DPIA) outsourced by the Dutch Ministry of Justice and Security, concluded that Microsoft collects and stores personal data of Office users on a large scale without informing them. According to this report, Microsoft thus violates the General Data Protection Regulation (GDPR) on a massive scale.
The DPIA was carried out to probe the use of Microsoft Office in the public sector. Most of the Dutch authorities use Microsoft Office 2016, Office 365 or an older version. The Dutch judiciary, police, various ministries and tax offices use Word, Excel, Outlook and PowerPoint. The DPIA found that Microsoft not only collects and stores personal data but also send them to the US. In addition, users are not informed and it is not offered to switch off the collection or to see what data are collected. The Assessment outlined eight different risks and possible risk mitigating measures. One example is the “Lack of Transparency”. A possible measure recommended for Microsoft is the public documentation and the implementation of a data viewer tool because at the moment the content of the diagnostic data (i.e. “all observations stored in event logs about the behaviour of individual users of the services”) is not accessible.
Microsoft stated that -for the examined Office versions- between 23,000 and 25,000 event logs are sent to Microsoft servers and that 20 to 30 development teams analyse the data. The company agreed to change its practices by April 2019 and until then offers “zero exhaust” settings to shut down the data collection. A Microsoft spokesperson told The Register: “We are committed to our customers’ privacy, putting them in control of their data and ensuring that Office ProPlus and other Microsoft products and services comply with GDPR and other applicable laws.”
In addition to applying the new settings, the DPIA encourages users to deactivate Connected Services and Microsoft’s data sharing system, not use the web-based Office 365, SharePoint, or OneDrive, delete the directory of the system, and consider using alternative software.
