Tom, Ed and I started Tessian 11 years ago (almost to the month). After our early careers in finance, we’d seen a recurrent cybersecurity risk and one we thought would shape the decade ahead – human error. The only software available at the time to deal with this kind of risk was terrible: rule-based and time-consuming for admins, it created tons of false positives and friction for employees. We believed that the next generation of security software had to feel like magic – it had to be smarter than a human ever could and remain invisible until it was needed. And Tessian was born. 

Over the past decade and with guidance from hundreds of evangelical customers and talented Tessians, we developed the Tessian cloud email security platform into a full suite of AI-powered solutions that help organizations defend against email threats, protect against email misdelivery and exfiltration, respond effectively to threats and coach employees in-the-moment. 

I couldn’t be prouder of the impact Tessian is having on our customers. In the past month alone, we’ve developed technologies that have prevented thousands of email attacks from QR Code Phishing and image-based attacks and continued to help our customers automatically prevent data loss on email by stopping 20,000 suspected data loss events each week. 

But today marks the beginning of an exciting new chapter for Tessian.

We are thrilled to announce that Tessian has entered into a definitive agreement to be acquired by Proofpoint – a leading people-centric cybersecurity and compliance company. The agreement is expected to close in late 2023 to early 2024, subject to customary closing conditions and required regulatory approvals. 

From our first conversation with Proofpoint, it was immediately apparent that we had a shared vision for how AI was revolutionizing the email industry and the opportunity to better protect our customers. We are making great strides to realize this vision by bringing together Proofpoint’s award-winning AI and large language models (LLMs) and Tessian’s innovative use of advanced behavioral AI to automatically detect and guard against both accidental data loss and evolving email threats.

I want to say a huge thank you to all those people who’ve supported Tessian to get to this point. To our dedicated and talented employees past and present who have built this company, to our investors who put their faith in us and supported our mission and finally to our customers and their security teams who have enabled Tessian to grow from an idea in a notebook to the company and technology it is today – thank you.

We are excited to share more details once the deal closes. For now, please stay tuned.

To learn more about Tessian’s suite of AI-powered email security solutions, book a demo with one of our experts.