Accepting a Teams guest invitation can drop users into an unprotected tenant, bypassing all Defender for Office 365 controls.

A new report from Ontinue is raising major concerns about how Microsoft Teams handles cross-tenant collaboration.

New child process ms-teams_modulehost.exe handles the calling stack separately to speed up Teams startup. The new process appears under ms-teams.exe in Task Manager and won't need any special setup.

In theory, a threat actor could impersonate someone, invite the victim for a Teams chat, and have them open a phishing link, ...

Microsoft says it will add a new Teams call handler beginning in January 2026 to reduce launch times and boost call ...

I have a weird relationship with apps I need to use for work. If I don’t like using them, I put very little effort into learning how to use them well. If I do like using them, then I get overly ...

Researchers found Microsoft Teams bugs letting attackers spoof executives, alter messages, and erode trust in workplace ...

The Microsoft 365 Roadmap is a very useful repository of information which outlines all the new capabilities coming to the ...

Let us start with the simplest solution of them all. But it is not as simple as you think. You should not only close the MS Teams client application, but also stop all its processes that are running ...

In fact, the Rhysida group is a famous ransomware operator. It works on a RaaS principle - developing and maintaining the encryptor, while its affiliates breach their targets’ networks and deploy the ...