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Barracuda Sentinel

AI-Based Office 365 protection from phishing and account takeover



Artificial intelligence for real-time email protection

Business email compromise (BEC), spear phishing, and account-takeover are today's top email threats. These hyper-targeted attacks trick employees into making terribly costly mistakes.

Barracuda Sentinel combines artificial intelligence, deep integration with Microsoft Office 365, and brand protection into a comprehensive cloud-based solution that guards against these potentially devastating attacks.

Get to know 13 email threat types

Block threats already in your inbox

Traditional email filters only filter incoming emails. Sentinel integrates directly into Office 365 to find threats inside your mail system that security gateways can’t see.

Stay a step ahead of attackers with AI-based threat detection

Sentinel learns your business’s unique communication patterns to detect personalized fraud in real-time to protect against business email compromise and account takeover.

Stop wasting time managing static security rules

Sentinel is truly a zero-administration tool. It works silently in the background to block fraudulent emails from reaching users with no impact on performance.

Over $12B has been lost to spear phishing and account takeover.

Targeted attacks carry no malicious payload (URLs or attachments) and bypass email gateways. Sentinel uses AI to outsmart the attackers and protect your business and data.

Barracuda Sentinel

Inbox Defense

Barracuda Total Email Protection is a multi-layered email protection solution, where Sentinel provides AI-based protection against spear phishing, account takeover, and business email compromise.


email threat scan


Find out what threats are hiding in your inbox with this FREE email threat scan.

Did you know over 95% of Office 365 mailboxes harbor malicious emails? 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.


Join the 8,000+ organizations who have run this scan and discovered advanced threats in their Office 365 mailboxes.