But the encryption at its core relies on an insecure operation called Electronic Codebook (ECB) mode. Despite being pointed out about this problem, Microsoft has clearly stated that it will not ...

Microsoft 365 (formerly Office 365) offers a method of sending encrypted messages (Office 365 Message Encryption, or OME) using Electronic Codebook (ECB), a mode of operation known to expose ...

It uses the Electronic Codebook (ECB) encryption implementation, but according to WithSecure consultant and security researcher Harry Sintonen, this mode of operation leaks certain structural ...

A researcher from cloud and endpoint protection provider WithSecure has discovered an unpatchable flaw in Microsoft Office 365 Message Encryption (OME).

“The root cause for the vulnerability appears to be a prior decision to use Electronic Codebook (ECB) mode of operation with message encryption and then maintaining compatibility with this poor ...

WithSecure, previously known as F-Secure until March, explained that the issue with Microsoft 365, known as Office 365 until yesterday, is that Microsoft uses an Electronic Codebook implementation.

The encryption module is available in 128-bit electronic codebook (ECB) and 256-bit ECB or cipher-block chaining (CBC) versions.