Stealthware: The Rise of Malicious OAuth Apps in Microsoft 365

Hackers are hiding in plain sight—here’s how.

Forget malware—some attacks now use custom-built apps to quietly break into Microsoft 365. These apps, known as Stealthware, are designed to look legit but secretly steal data, change inbox rules, and stick around long-term. They can even bypass MFA and avoid triggering security alerts.

In just 5 minutes, learn how these sneaky apps work—and how to find and remove them before they do real damage.

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