24 Apr, 2026

Microsoft: Enabling Teams Meeting add-in breaks Outlook Classic

Microsoft is working to address a known issue that renders the classic Outlook email client unusable for users who have enabled the Microsoft Teams Meeting Add-in. “Some users may be unable to use Microsoft Outlook Classic while the Microsoft Teams Meeting Add-in is enabled,” Microsoft said in an admin center update under EX1254044. While it […]

1 min read

Microsoft Store Outlook add-in hijacked to steal 4,000 Microsoft accounts

The AgreeTo add-in for Outlook has been hijacked and turned into a phishing kit that stole more than 4,000 Microsoft account credentials. Originally a legitimate meeting scheduling tool for Outlook users, the module was developed by an independent publisher and has been on the Microsoft Office Add-in Store since December 2022. Office add-ins are just URLs pointing […]

3 mins read

Fake Microsoft Office add-in tools push malware via SourceForge

Threat actors are abusing SourceForge to distribute fake Microsoft add-ins that install malware on victims’ computers to both mine and steal cryptocurrency. SourceForge.net is a legitimate software hosting and distribution platform that also supports version control, bug tracking, and dedicated forums/wikis, making it very popular among open-source project communities. Although its open project submission model […]

3 mins read