Tessian

Intelligent cloud email security.

About

Founded

2013

Headquarters

Boston, Massachusetts

Industry

Security & Compliance

Company Description

Tessian is a leading cloud email security platform that intelligently protects organizations against advanced threats and data loss on email, while coaching people about security threats in-the-moment. Using machine learning and behavioral data science, Tessian automatically stops threats that evade legacy Secure Email Gateways, including advanced phishing attacks, business email compromise, accidental data loss and insider threats. Tessian’s intelligent approach not only strengthens email security but also builds smarter security cultures in the modern enterprise.

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Funding

Total Raised

$132.6 million

Valuation

$500 million

Significant Investors

Sequoia Capital, Accel, March Capital, Balderton, Sozo Ventures, Okta Ventures, Citi Ventures

Company Traction

  • As of May 2021, Tessian had ~350 global customers and tripled its number of Fortune 500 customers in the past year.
  • Tessian customers include Affirm, Stripe, Evercore, Rand Merchant Bank, JTC, Com Laude, DC Advisory, and Clyde & Co.

Leadership Team

  • Tim Sadler: Co-Founder & CEO of Tessian. Former Global Banking Analyst at HSBC.
  • Edward Bishop: Co-Founder & CTO of Tessian. Former Investment Banking Executive at The Valence Group.
  • Tom Adams: Co-Founder & Head of Client-Side Engineering at Tessian. Former Corporate Advisory Analyst at Santander UK.  
  • Daniel Kim: CFO at Tessian. Former VP of Finance & Accounting at Lookout.
  • Matthew Smith: Chief Strategy & Growth Officer at Tessian. Former Global VP & GM at Duo Security.

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