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See what your email
security is missing.


Accurate detection is the first step to preventing data breaches. Tessian’s free Threat Report gives you visibility into your organization's security gaps and historical compromises. After a 5-minute integration, see what spear phishing emails reached user inboxes, what sensitive data was exfiltrated to unauthorized email accounts and what emails were sent to incorrect contacts in the past year.

*Compatible with G-Suite and O365 environments with adequate mailflow. No payment required.

  • CONNECT: API integrated safely in 5 minutes with no impact to mailflow
  • GENERATE: report to see how many spear phishing and data exfiltration incidents occurred in the last year
  • ANALYZE: bespoke threat consultation to understand how historical incidents occurred and how to stop them before they happen next

Get my Threat Report now.

Join the world's leading organizations using Tessian to stop data breaches.

Explore how IT and security leaders stop data breaches with Tessian.

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.

Tim Fitzgerald, CISO, Arm

The reports from Tessian proved it’s value without a doubt. And it continues to shows it’s value over and over again every day of the month.”

Steve Sumner, Director of IT, Taylor Vinters

Tessian gives us an opportunity to take a proactive step to prevent bad things happening in the first place

Rob Hyde, CISO, Schroders

Before we adopted Tessian’s technology, we didn't believe we had any problems with misdirected emails. After a pilot, we realized that was only because these issues weren’t being reported. We can see ROI in one email.

Andrew Cheung, Partner & General Counsel, Dentons
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  • Cyber

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    Essentials Plus

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    Awards: Best AI/ML Provider

  • The Techies 2019: Best Security
    Technology Solution

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    European Billion-Dollar Company

  • Fast Track: Disruptors to Watch:
    Top Tech Entrepreneurs 2019

  • 451 Research:
    Firestarter Q1 2020