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Automatically stop data breaches and security threats caused by employees on email. Powered by machine learning, Tessian detects anomalies in real-time, integrating seamlessly with your email environment within minutes and starting protection in a day. Provides you with unparalleled visibility into human security risks to remediate threats and ensure compliance.

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Email Mistakes Don’t Have To Become Security Incidents

Automatically detect and prevent accidental data loss caused by people sending emails to the wrong recipient or attaching the wrong files



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Stop Accidental Data Loss From Email Misdelivery with Tessian Guardian
Learn how Tessian Guardian can help prevent people's mistakes on email from turning into serious data loss incidents.

Intelligently Prevent Data Loss Without Rules or False Positives

Learn What ‘Normal’ Looks Like For Each Person


Tessian analyzes historical email data to understand content, context and communication patterns, enabling a comprehensive mapping of each and every employee’s normal behavior and email relationships (both within and outside your organization). Behavioral intelligence models are established and become more effective with each threat detected.




Perform Real-Time Analysis of Emails Before They’re Sent


All emails leaving employee inboxes are analyzed in real-time. Using machine learning powered behavioral intelligence modeling, Tessian conducts an inspection of email content and attachments and automatically detects anomalous events that indicate accidental data loss.





Help People Correct Mistakes Before the Email is Sent


As misdirected emails and incorrect attachments are detected, end-users are alerted in real-time with clear, simple explanations and intelligent suggestions for alternative recipients. End-users are empowered to correct their mistakes before the email is sent.




Get Visibility into Breaches Prevented


With Tessian Cloud Email Security Platform, remediating and reporting on email security risks is easy. Warnings and employee interactions with those warnings are logged for inspection so you can create targeted policies or take other proactive and preventative action. Generate automated reports to share insights with other departments or the board.






The Benefits of Tessian Intelligent Cloud Email Security

  • Comprehensive Security


    • Protection for both desktop and mobile devices and no disruption to existing email infrastructure.
    • Machine learning adapts and evolves to changing email relationships.
    • In-the-moment user warnings to drive secure behavior.
  • Effortless for Security Teams


    • Integration and deployment can be completed in minutes.
    • No need for any pre-labeled training data or manual email archive import.
    • Automated data breach prevention within 24 hours of deployment
  • Balance Security with Productivity


    • Machine learning algorithms work automatically and invisibly to prevent misdirected emails and wrong attachments.
    • Prevent misdirected emails without having to disable recipient autocomplete.
    • No repetitive and annoying user pop-ups or cues on every email being sent.
Tessian Guardian Integrates with Your Email Environment.
We are committed to helping our customers protect their people and meet their compliance needs. Through Tessian Clould Email Security Platform, you can directly integrate with your SIEM/SOAR via a RESTful HTTP API.
View Tessian's integrations, compatibility and partnerships →

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Organizations see a 2-7% churn rate after a data breach. Keep your organization’s data secure with Tessian Guardian.