spoofing

Office 365 Takes Aim at Spoofers but Users See Warnings About Fraudulent Messages

Microsoft upgraded their EOP anti-spoofing capabilities inside Office 365, which is good, but they didn't tell anyone. The first users knew was when they started to receive messages stamped with "the sender failed our fraud detection checks" - something that is never assuring. This only applies to ATP customers, but it's not the first time Microsoft has failed to communicate important news.

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