security
20 TopicsAuto-Updating Teams Work Location is Not Employee Monitoring
As is the way of the internet, the news that a feature to automatically set the Teams work location for users created a huge fuss about the prospect that managers would keep an eye on employees based on their location. Of course, this is all rubbish. The update automates an existing feature that no sane manager would use to monitor employees. https://office365itpros.com/2025/10/28/teams-work-location-auto/44Views0likes1CommentStealing Access Token Secrets from Teams is Hard Unless a Workstation is Compromised
Teams stores information in a local state file, including encrypted access tokens. A report from a French company explained how to extract and use those tokens with the Graph API. Is this important? It could be if attackers manage to gain access to a workstation, but at that point you’ve got other problems, and maybe using code to decrypt some tokens is the least of your troubles. https://office365itpros.com/2025/10/27/local-state-file-teams/44Views0likes0Comments🤬 All My Contacts Imported to My Partners Account
My partner restarted her Teams tonight. On restarting, every single one of my contacts had appeared in her contact list. Is this a bug, or have they introduced automatic contact sharing. She can't see any previous messages, but obviously a massive security breach sharing contact lists between accounts without permission.26Views0likes0CommentsUser has access to SharePoint files for a team channel she's not a member of
We have a team with several channels. A couple of these channels are only open for a subset of this team. This means that not all team members can see or access these channels. Today, one user who's not a member of these channels discovered something: - She was in a file folder for one of the teams she IS a member of - She chose "Open in SharePoint" - She was then taken to the same file folder in SharePoint - She then chose Documents in the left side menu in SharePoint - She could now see the file folders for ALL channels, even the ones she doesn't have access to inside Teams. Is this normal behavior between SharePoint and Teams? If so, that is a huge security fault. Or is it a setting I can set to prevent this?Solved5.5KViews0likes7CommentsSecurity Researchers Demonstrate Exploit Against Teams External Access
Security researchers JumpSec demonstrated a weakness in Teams External Access by showing how to send malware to users via a federated chat. The exploit depends on another weakness in that attackers can interfere with the set of policy controls transmitted by the Teams server to clients. It’s yet another reason why Microsoft 365 tenants should restrict external access to the set of domains they really want to chat with. https://office365itpros.com/2023/06/26/teams-external-access-exploit/4.7KViews0likes0CommentsUnable to share screen on MS Teams in Google Chrome 109.0.5414 on Ubuntu 22.10
Hello, I have not been able to share the screen (or other windows) like I used to share with MS Teams running inside Google Chrome 109.0.5414 on Ubuntu 22.10. The only thing I can share is other tabs inside Google Chrome. The same thing is happening inside Chromium 109.0.5414. The strange thing is that Google Chrome and Chromium display the following message: "Go to Security & Privacy > Screen Recording to give permission and start sharing." But I do not have these Security & Privacy Settings. I am not using macOS, where I know about these settings. On Linux, there are no such settings. Are there any other options on a Linux System to set to make sharing screens possible once more? Thanks in advance. Details: - Ubuntu 22.10 with GNOME 43.1, Wayland - Chromium 109.0.5414 (via snap) and Google Chrome 109.0.5414 (via dpkg/apt)16KViews1like7CommentsBlock Guest to Guest access in MS Teams
Hi, We have a use case where users from multiple organizations would be guest users in O365. The Guest will be collaborating with internal users, which is fine. However, we don't want a Guest to chat with other Guests from different organizations, please let us know how to prevent this.Solved2.1KViews0likes2Comments