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Researchers Say Microsoft Office 365 Uses Broken Email Encryption to Secure Messages

New research has disclosed what’s being called a security vulnerability in Microsoft 365 that could be exploited to infer message contents due to the use of a broken cryptographic algorithm.
“The [Office 365 Message Encryption] messages are encrypted in insecure Electronic Codebook (ECB) mode of operation,” Finnish cybersecurity company WithSecure said in a report published last week.
Office 365

Source:: The Hackers News