Barracuda Email Threat Scanner

Serious threats may be hiding in
your Microsoft 365 mailboxes.


Scan your Microsoft 365 environment.
It’s fast, free and safe — with no impact on email performance.

98% of organizations with Microsoft 365 harbor malicious emails inside their mailboxes.*

Many of these email threats stealthily slip past the gateway. Threats like ransomware, spear phishing, and account takeover put your organization and employees at significant risk. In fact, undetected email threats cost businesses over $300 million per month.

Find out what’s hiding in your inbox.

It’s critical to assess and understand your email security vulnerabilities. Using artificial intelligence and API integration with Microsoft 365, the Barracuda Email Threat Scanner quickly and effectively finds social engineering attacks currently sitting in your mailboxes.

*Organizations with 100+ mailboxes

12,000 organizations

have run this scan and discovered advanced threats in their Microsoft 365 mailboxes.


scans completed

since 2018

13 million


have been scanned for threats

10 million

spear phishing attacks

identified to date

“There were 450 severe email threats sitting in our Microsoft 365 spread across all kinds of users and Email Threat Scanner identified the most at-risk users. It was a simple scan that took less than a minute to setup and scanned all the mailboxes. It produced a great report that I took to our CIO.”

Brian Gancherov

VP Security Solutions, Entisys360
Scan your Office 365 environment. It’s fast, free, and safe with Barracuda Email Threat Scanner.