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Don’t Get Tricked by Fake Productivity Apps: What to Know About the TamperedChef Malware Campaign If you’ve ever downloaded a quick installer for Microsoft Teams, Zoom, or Slack from a third-party site, you’re not alone. Many people take shortcuts when they need a collaboration tool in a hurry. But that shortcut can lead straight into a malware trap. A recently uncovered campaign called TamperedChef is actively distributing information stealers and remote access trojans (RATs) through fake versions of popular productivity apps—and the worst part is that the malicious installers appear to be digitally signed, which makes them look legitimate. ...

How to Spot Malware Hidden in Signed Productivity Apps (And Stay Safe) Imagine downloading what looks like the latest version of Slack or Microsoft Teams, seeing a digital signature that says the file is from the publisher you expect, and running it without a second thought. That’s the exact scenario the TamperedChef malware campaign exploits. Security researchers reported on May 21, 2026, that attackers are using legitimately signed installers to slip stealers and remote access trojans (RATs) onto computers. For anyone who installs productivity software regularly—especially remote workers and business professionals—this is a reminder that a digital signature alone is no longer a guarantee of safety. ...