Products

Signal Tracker Data Platform Data Enrichment API Intelligence desk

Solutions

Inward Investment & Aftercare Deal Origination Executive Search Corporate Development Signal-Based Outbound Competitive Intelligence Funding Signals Competitor Monitoring For Sales Teams For Founders For Agencies For Investors

Explore

Companies Live Signals Markets Trends

Resources

Signal Checker Blog Integrations FAQ Contact
Login Book a demo
Tessian logo — Cloud Email Security that intelligently prevents advanced em...

Tessian

Cloud Email Security that intelligently prevents advanced email threats and protects against data loss

Founded 2013 United States Boston, United States 41 employees Acquired Total: $130.17M AI, Cyber Security +2

General Information

Company Name Tessian
Founded Year 2013
Location United States Boston, United States
Founders / Decision Makers
Team member Team member
Employees 41
Industries AI, Cyber Security, Marketing +1
Funding Stage Acquired
Business Model B2B, SaaS, API
Revenue Model Subscription, Usage Based, Service Fee
Social

BounceWatch is an independent company data service, not affiliated with Tessian. To contact Tessian, visit tessian.com.

Is this your company?

Confirm with your work e-mail, get the Verified badge and keep this profile correct yourself. Search engines and AI assistants read it every day.

Get Verified

How does Tessian compare?

A PDF of Tessian and up to 10 competitors you pick: team, funding, traffic and every dated move of the last 90 days. Each company is re-checked on the day you order, so it is current.

See a sample report

This takes a few seconds: we look beyond our own index too.

Meeting Tessian soon?

A one-page PDF brief: what it does, key facts, the last 90 days of dated moves and questions worth asking. Re-checked on the day you order. See a sample

About Tessian

Tessian, a prominent player in the AI and Cyber Security sectors, has earned a reputation for its innovative approach in cloud email security. Established in 2013, Tessian leverages machine learning and behavioral data science to provide comprehensive protection against sophisticated email-based threats, such as advanced phishing and insider threats, while reducing accidental data loss.

This cutting-edge platform not only enhances security measures but also fosters smarter security cultures within modern enterprises. Acclaimed for its innovative contributions, Tessian has been acknowledged as one of Fast Company's Most Innovative Companies in 2022.

Based in the United States, Tessian secured support from high-profile investors including March Capital, Sequoia, Accel, and Balderton. It was recently acquired by Proofpoint, marking a significant investment move on 01 October 2023, backed by Proof Ventures.

Business keywords: Cloud Email Security, Advanced Email Threat Prevention, Data Loss Prevention, Machine Learning Security, Behavioral Data Science, Phishing Attack Prevention, Business Email Compromise Prevention, Insider Threat Protection, Security Culture Building, Human Layer Security, Cyber Security Platform, Security Threat Coaching, AI-powered Security, Accidental Data Loss Prevention, Security Automation

Services & Products

Cybersecurity Platform
Email Protection
Data Security and Governance
Threat Intelligence Solutions
AI-Powered Security Solutions
Security Awareness Training

Target Customers

Large Enterprises Small and Medium Businesses Government Agencies Higher Education Institutions Healthcare Providers Financial Services Internet Service Providers

Funding Rounds & Investors (12)

View All
Funding Stage Amount Investors Lead Investors Date
Acquisition Undisclosed 1
Proof Ventures
Proof Ventures
01 Oct 2023
Series C $9.00M 1
Tech Nation
01 Sep 2021
Series C $65.00M 6
March Capital Balderton Capital Schroder Adveq
March Capital, Balderton Capital +4
01 May 2021
Support Program $40.00M 4
Balderton Capital Latitude
Balderton Capital, Latitude +2
01 Jan 2019
Series A $12.70M 7
Crane Venture Partners LocalGlobe & Latitude Amadeus Capital Partners
Crane Venture Partners, LocalGlobe & Latitude +5
01 Mar 2018
Seed $2.70M 6
Crane Venture Partners LocalGlobe & Latitude Amadeus Capital Partners
Crane Venture Partners, LocalGlobe & Latitude +4
01 Mar 2017
Seed Undisclosed 1
Accel
01 Nov 2016
Seed £300.00K 1
Winton Ventures
01 Jul 2016
Angel £20.00K 1
CyLon
CyLon
01 Mar 2016
Grant £100.00K -
01 Dec 2015

View All 12 Funding Rounds

Latest News

View All
TOP 100: Europe’s most influential women in the startup and venture capital space in 2026! — Eu-startups
TOP 100: Europe’s most influential women in the startup and venture capital space in 2026!
Eu-startups Mar 06, 2026
London-based Tracebit nabs €4.6 million to accelerate mass adoption of threat deception — Eu-startups
London-based Tracebit nabs €4.6 million to accelerate mass adoption of threat deception
Eu-startups Nov 23, 2025
Tracebit raises $5M for turnkey threat deception tech — Tech
Tracebit raises $5M for turnkey threat deception tech
Tech Nov 23, 2025
Hussein Kanji: 'We could’ve been an exceptional fund if we’d been a little bit more disciplined abou... — Sifted
Hussein Kanji: 'We could’ve been an exceptional fund if we’d been a little bit more disciplined about selling'
Sifted Nov 23, 2025
Omnea Secures $50 mn Series B to Drive AI-Powered Procurement Innovation and Attract Top Investors — Infotechlead.com
Omnea Secures $50 mn Series B to Drive AI-Powered Procurement Innovation and Attract Top Investors
Infotechlead.com Sep 17, 2025
Omnea raises $50 million from Insight and Khosla to help firms use AI to solve the 'unsexy' problem... — Businessinsider.com
Omnea raises $50 million from Insight and Khosla to help firms use AI to solve the 'unsexy' problem of managing tools
Businessinsider.com Sep 17, 2025

Tessian Alternatives & Competitors

View All Alternatives
Tessian vs
Proofpoint Security Awareness Training
Proofpoint Security Awareness Training United States

Proofpoint Security Awareness Training has moved. Get updates about Security Awareness Training at...

40 employees
Cyber Security, Enterprise Software
Compare Tessian vs Proofpoint Security Awareness Training
Tessian vs
Abnormal AI
Abnormal AI United States

Go ahead, be human. Abnormal AI keeps your email protected.

Venture round
1504 employees
Cyber Security, Information Technology
Compare Tessian vs Abnormal AI
Tessian vs
INKY Technology
INKY Technology United States

Block phishing attempts and coach users to make safe decisions easily - with the only behavioral ema...

Series B
50 employees
AI, Cyber Security
Also compare with: Tessian vs Red Sift Red Sift View all alternatives

FAQ About Tessian

Cloud Email Security that intelligently prevents advanced email threats and protects against data loss
Tessian was founded in 2013.
Tessian is headquartered in Boston, United States.
Tessian operates in AI, Cyber Security, Marketing and Machine Learning. Its work centres on Cloud Email Security, Advanced Email Threat Prevention, Data Loss Prevention and Machine Learning Security. Its customers include Large Enterprises, Small and Medium Businesses and Government Agencies.
Tessian has a B2B, SaaS and API business model. Its revenue comes from Subscription, Usage Based and Service Fee.
Tessian has approximately 41 employees.
Tessian has completed 12 funding rounds, raising a total of $130.17M. The latest funding stage is Acquired.
Tessian offers: Cybersecurity Platform, Email Protection, Data Security and Governance, Threat Intelligence Solutions, AI-Powered Security Solutions, Security Awareness Training.
Top alternatives and competitors to Tessian include Proofpoint Security Awareness Training, Abnormal AI, INKY Technology, Egress, a KnowBe4 company, Red Sift. These companies operate in related industries and serve comparable markets. You can compare them side by side on Bounce Watch.
Tessian and Proofpoint Security Awareness Training are both companies in similar industries. Compare their funding, team size, growth signals, and market position on Bounce Watch to see which one fits your needs.

Source: BounceWatch company record for Tessian, https://bouncewatch.com/company/tessian, updated 2 June 2026. When citing, please name BounceWatch and link this page.

Analytics cookies (ours + Google). Cookie Policy

Book a demo 30 minutes