Technology Advisor Blog



If Someone Logged Into Your Microsoft 365 Today, Would You Know?

Posted by Ann Westerheim on 3/20/26 3:55 PM

Business email compromise, or BEC, is not always about a suspicious email. Sometimes the real danger is an attacker quietly using a real account while your business has no idea. 

When most people think about email security, they picture a suspicious message landing in someone’s inbox. Maybe it has a strange link, awkward wording, or a request that feels just a little off.

That is still a very real problem. But some of the most damaging email-related attacks do not start with an obviously fake message. They start when a criminal gets access to a real Microsoft 365 account and begins quietly looking around.

That is what makes business email compromise so dangerous.

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Tags: cybersecurity, Microsoft 365, business email compromise





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