See Tessian Cloud Email Security in Action

Modern day threats are bypassing traditional email security solutions. Book a personalized demo to see how Tessian:

Detects and prevents both advanced email threats and data loss
Automates your SOC workflow and saves time
Improves end-user security behaviors without disrupting workflow
Seamlessly integrates with Microsoft 365, Microsoft Exchange and Google

Highly Rated on Gartner Peer Insights™

4.7

Join other CISOs, CIOs, and IT Managers reviewing Tessian on Gartner Peer Insights™ and hear what they have to say about the future of cybersecurity.

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Protect against advanced email threats

Prevent the targeted advanced email threats that traditional email security solutions miss. An intelligent approach to mitigating spear phishing, social engineering & business email compromise attacks.

Learn More about Tessian Defender →

Prevent data loss over email

Stop end-users sending emails to the wrong person and prevent data exfiltration to unauthorized accounts. Tessian prevents accidental data loss and reduces risk posed by insider threats, without overburdening the security operations center.

Learn More about Tessian Enforcer →

Enhance Microsoft 365 security

While Microsoft 365 built-in email security provides baseline protection against spam and malware, Tessian detects advanced email threats to add another layer and strengthen email security in the modern enterprise.

Learn More about Tessian →

Hear From Our Customers

featured customer story

Tessian proved its value after a few weeks of being deployed firm-wide. For the first time ever, we now have visibility and control over inadvertent data loss through misaddressed emails and information being sent to unauthorized email accounts.

Neil Wellard

Head of Information Security, Man Group

Learn More about Man Group’s Experience →

featured customer story

There are complex solutions to a number of the security challenges we face, but the best chance we have to protect ourselves is simply doing the fundamentals properly. Tessian is now part of our fundamentals, and a part that I wish we had all along.

photograph of tim f smiling with his shoulder to the camera

Tim Fitzgerald

CISO, Arm

Learn More about Arm's Experience →

Tessian integrates with your email environment.

Tessian is committed to helping our customers protect their people and meet their compliance needs. You can directly integrate with your SIEM/SOAR via a RESTful HTTP API.

Read about our Integrations and Compatibility →