Tessian
AcquiredTessian is Now Proofpoint | Proofpoint US
London, United Kingdom · Founded 2013 · $123.3M raised
- Headquarters
- London
- Employees
- 201–500
- Founded
- 2013
- Business Model
- B2B
- Website
- tessian.com
- Total Funding
- $123.3M
- Last Round
- $65.0M Series CMay 2021
- Rounds
- 6
- Acquired by
- ProofpointDec 2023
Totals include recorded grants and other qualifying funding, not just equity. What counts toward funding.
Indexed holds 7 funding rounds and 11 investors for this company. The full record is or through the API.
About
Tessian was an AI-powered email security platform founded in 2013 in London that used machine learning to automatically detect and prevent advanced phishing attacks, accidental data loss, and insider threats on email. Backed by Sequoia, Accel, and Balderton Capital, Tessian served enterprises in finance, law, and technology before being acquired by Proofpoint in December 2023.
Summary
Tessian is an Artificial Intelligence company based in London, United Kingdom, founded in 2013. It has raised $123.3M in total across 6 rounds, most recently a $65.0M Series C round in May 2021. Investors include Accel, Balderton Capital and LocalGlobe.
Tech & App Stack
6 technologies & apps tracked
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Funding & Exit History
Dec 2023
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Funding: Pre-Seed through Series C. Amounts, valuations, and investors where available.
Investors
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