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Automatically stop data breaches and security threats caused by employees on email. Powered by machine learning, Tessian detects anomalies in real-time, integrating seamlessly with your email environment within minutes and starting protection in a day. Provides you with unparalleled visibility into human security risks to remediate threats and ensure compliance.

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Tessian Resources Hub

Infographics

Forrester findings uncover a 268% ROI with The Tessian Cloud Email Security Platform

This infographic showcases key findings of the Total Economic Impact of Tessian. This study, conducted by Forrester walks through common email security and email DLP challenges and organizational benefits enabled by Tessian.
Analyst Reports

Tessian Named Representative Vendor in the 2022 Gartner® Market Guide for Data Loss Prevention

Research & Reports

How Security Cultures Impact Employee Behavior

In this report, we take a look at what security cultures look like today and reveal how employees truly feel about the role they play in maintaining their company’s security posture. We combine our research findings with advice from leading industry experts from the likes of KnowBe4, eBay and Stanford University, along with quotes from our own customers, to explain how to build and maintain a strong security culture in today’s threat landscape.
Product Datasheets

Tessian Cloud Email Security Platform Overview

Across 4 modules, Tessian Cloud Email Security intelligently prevents advanced email threats and protects against data loss, to strengthen email security in modern enterprises.
Solution Briefs

How Tessian Closes Critical DLP Gaps in Microsoft 365

Tessian augments MS365 with a behavioral modeling approach that closes critical security gaps that MS365 is unable to address.
Analyst Report
Forrester Total Economic Impact of the Tessian Cloud Email Security Platform
Research Report
How Security Cultures Impact Employee Behavior
Video
The Tessian Cloud Email Security Platform Overview Video
Product Datasheets See all datasheets
Product Datasheets
Tessian Cloud Email Security Platform Overview
Across 4 modules, Tessian Cloud Email Security intelligently prevents advanced email threats and protects against data loss, to strengthen email security in modern enterprises.
Product Datasheets
Tessian Defender: Prevent Inbound Email Attacks
Learn more about how Tessian Defender uses behavioral intelligence modelling powered by machine learning to detect and prevent spear phishing, BEC, and ATO.
Product Datasheets
Tessian Guardian: Stop Misdirected Emails and Misattached Files
Learn how Tessian Guardian automatically prevents data loss and breaches caused by misdirected emails and misattached files.
Product Datasheets
Tessian Enforcer: Automatically Stop Sensitive Data Exfiltration Over Email
Learn how Tessian automatically prevents data exfiltration with better accuracy than traditional, static DLP solutions. No rules required.
Product Datasheets
Tessian Architect: Leverage Intelligent and Custom Policies
Learn more about how you can utilize a combination of the classic elements of DLP policies, as well as Tessian’s intelligent policies.
Product Datasheets
Tessian Cloud Email Security Platform Overview
Across 4 modules, Tessian Cloud Email Security intelligently prevents advanced email threats and protects against data loss, to strengthen email security in modern enterprises.
Product Datasheets
Tessian Defender: Prevent Inbound Email Attacks
Learn more about how Tessian Defender uses behavioral intelligence modelling powered by machine learning to detect and prevent spear phishing, BEC, and ATO.
Product Datasheets
Tessian Guardian: Stop Misdirected Emails and Misattached Files
Learn how Tessian Guardian automatically prevents data loss and breaches caused by misdirected emails and misattached files.
Product Datasheets
Tessian Enforcer: Automatically Stop Sensitive Data Exfiltration Over Email
Learn how Tessian automatically prevents data exfiltration with better accuracy than traditional, static DLP solutions. No rules required.
Product Datasheets
Tessian Architect: Leverage Intelligent and Custom Policies
Learn more about how you can utilize a combination of the classic elements of DLP policies, as well as Tessian’s intelligent policies.
Case Studies See All Case Studies
Customer Stories
Helping a Biopharmaceutical Company Reduce CTR on Phishing Emails Below the Industry Benchmark
Learn how this US, mid-market pharmaceutical company use Tessian Defender to augment Mimecast's SEG and prevent spear phishing attacks.
Customer Stories
Next-Gen DLP For One of Africa’s Largest FinServ Groups
Learn how Tessian has helped Rand Merchant Bank (RMB) prevent data loss and ensure compliance on email without admin overhead.
Customer Stories
Advanced Inbound and Outbound Threat Protection for an International Law Firm
Learn why Tessian is a vital part of Penningtons Manches Cooper's security stack, preventing inbound threats and data loss.
Customer Stories
Inbound and Outbound Email Security For an Enterprise-Level Investment Firm
CIO at JTC Group explains why he chose Tessian 3+ years ago, how the product has evolved, and details specific security incidents prevented.
Customer Stories
Why an Asset Management Firm Chose Tessian Defender Over a Well-Known, ML-Based Competitor
Learn why this asset management firm chose Tessian Defender over a well-known, ML-based competitor.
Customer Stories
How Tessian Prevents Accidental Data Loss and Ensures Compliance Without Admin Overhead
LGL Group's CIO explains why deploying Tessian was a no-brainer, and how it's helped improve their security posture without admin overhead.
Customer Stories
How Tessian Prevents Inbound and Outbound Threats For a Strategic Partner of Leading Global Brands
Having been a customer since 2016, Com Laude now has the full Tessian platform deployed, covering DLP and inbound email security. Learn more from Com Laude's CTO.
Customer Stories
Comprehensive Email Security for a Global Legal and Advisory Services Firm
Having been a customer since 2017, Taylor Vinters now has the full Tessian platform deployed, covering DLP and inbound email security. Learn more from the law firm's IT Director.
Customer Stories
Helping a Biopharmaceutical Company Reduce CTR on Phishing Emails Below the Industry Benchmark
Learn how this US, mid-market pharmaceutical company use Tessian Defender to augment Mimecast's SEG and prevent spear phishing attacks.
Customer Stories
Next-Gen DLP For One of Africa’s Largest FinServ Groups
Learn how Tessian has helped Rand Merchant Bank (RMB) prevent data loss and ensure compliance on email without admin overhead.
Customer Stories
Advanced Inbound and Outbound Threat Protection for an International Law Firm
Learn why Tessian is a vital part of Penningtons Manches Cooper's security stack, preventing inbound threats and data loss.
Customer Stories
Inbound and Outbound Email Security For an Enterprise-Level Investment Firm
CIO at JTC Group explains why he chose Tessian 3+ years ago, how the product has evolved, and details specific security incidents prevented.
Customer Stories
Why an Asset Management Firm Chose Tessian Defender Over a Well-Known, ML-Based Competitor
Learn why this asset management firm chose Tessian Defender over a well-known, ML-based competitor.
Customer Stories
How Tessian Prevents Accidental Data Loss and Ensures Compliance Without Admin Overhead
LGL Group's CIO explains why deploying Tessian was a no-brainer, and how it's helped improve their security posture without admin overhead.
Customer Stories
How Tessian Prevents Inbound and Outbound Threats For a Strategic Partner of Leading Global Brands
Having been a customer since 2016, Com Laude now has the full Tessian platform deployed, covering DLP and inbound email security. Learn more from Com Laude's CTO.
Customer Stories
Comprehensive Email Security for a Global Legal and Advisory Services Firm
Having been a customer since 2017, Taylor Vinters now has the full Tessian platform deployed, covering DLP and inbound email security. Learn more from the law firm's IT Director.
Product Tours See all Videos
Videos
Product Tour: Platform Overview for Admins and End Users
Walk through the Tessian Cloud Email Security Platform and learn how you can intelligently prevent advanced email threats and protects against data loss.
Videos
Product Tour: Advanced Email Threat Prevention
Learn more about how Tessian Cloud Email Security automatically detects and prevents spear phishing, ATO, BEC, and ransomware. Watch now.
Videos
Product Tour: Data Loss Prevention on Email
Learn more about how Tessian Cloud Email Security automatically detects and prevents data exfiltration, insiders threats, and accidental data loss. Watch now.
Videos
Product Tour: Platform Overview for Admins and End Users
Walk through the Tessian Cloud Email Security Platform and learn how you can intelligently prevent advanced email threats and protects against data loss.
Videos
Product Tour: Advanced Email Threat Prevention
Learn more about how Tessian Cloud Email Security automatically detects and prevents spear phishing, ATO, BEC, and ransomware. Watch now.
Videos
Product Tour: Data Loss Prevention on Email
Learn more about how Tessian Cloud Email Security automatically detects and prevents data exfiltration, insiders threats, and accidental data loss. Watch now.
Research & Reports See All Research & Reports
Research & Reports
How Security Cultures Impact Employee Behavior
In this report, we take a look at what security cultures look like today and reveal how employees truly feel about the role they play in maintaining their company’s security posture. We combine our research findings with advice from leading industry experts from the likes of KnowBe4, eBay and Stanford University, along with quotes from our own customers, to explain how to build and maintain a strong security culture in today’s threat landscape.
Research & Reports
Why Do People Make Mistakes That Compromise Cybersecurity?
Learning the psychology behind human error to understand how to prevent mistakes from turning into security breaches.
Research & Reports
Reclaiming Hours Lost to Cybersecurity Incidents
We surveyed hundreds of CISOs to find out how much time they spend putting out fires, and what they'd do if they had that time back. Check out the research report.
Research & Reports
Spear Phishing Threat Landscape 2021
Over 12 months, Tessian detected nearly 2,000,000 spear phishing emails that slipped past SEGs. Learn what tactics bad actors or leveraging and how to protect your organization.
Research & Reports
How to Hack a Human
To find out just how vulnerable people and businesses are, we surveyed 4,000 employees and interviewed ten hackers.
Research & Reports
Have Employees Picked Up Bad Security Behaviors While Working From Home?
Find out how remote and hybrid working structures will impact cybersecurity, what threats are top of mind for security leaders, and how employees' behavior has changed.
Research & Reports
The Psychology of Human Error
Fascinating Insights from academics on why do people make mistakes and why this puts your data at risk. Understand the mistakes that compromise your company’s cybersecurity by learning the psychology behind human error, businesses can better understand how to prevent mistakes from happening before they turn into breaches.
Research & Reports
Opportunity in Cybersecurity Report 2021
This year, we followed up with women working in the field and... things have changed. For the better.We also went straight to the source, and probed recent grads about their potential interest in pursuing a career in cyber.
Research & Reports
The State of Data Loss Prevention
Read our latest research and learn why traditional DLP solutions are failing, and what the future looks like.
Research & Reports
Why the Threat of Phishing Can’t Be ‘Trained Away’
Two thirds of employees are not regularly trained about cyber threats on email. What's more, a significant percentage of those that are trained do not remember what they are taught. So, to what extent can training really stop people falling for phishing attacks?
Research & Reports
How Security Cultures Impact Employee Behavior
In this report, we take a look at what security cultures look like today and reveal how employees truly feel about the role they play in maintaining their company’s security posture. We combine our research findings with advice from leading industry experts from the likes of KnowBe4, eBay and Stanford University, along with quotes from our own customers, to explain how to build and maintain a strong security culture in today’s threat landscape.
Research & Reports
Why Do People Make Mistakes That Compromise Cybersecurity?
Learning the psychology behind human error to understand how to prevent mistakes from turning into security breaches.
Research & Reports
Reclaiming Hours Lost to Cybersecurity Incidents
We surveyed hundreds of CISOs to find out how much time they spend putting out fires, and what they'd do if they had that time back. Check out the research report.
Research & Reports
Spear Phishing Threat Landscape 2021
Over 12 months, Tessian detected nearly 2,000,000 spear phishing emails that slipped past SEGs. Learn what tactics bad actors or leveraging and how to protect your organization.
Research & Reports
How to Hack a Human
To find out just how vulnerable people and businesses are, we surveyed 4,000 employees and interviewed ten hackers.
Research & Reports
Have Employees Picked Up Bad Security Behaviors While Working From Home?
Find out how remote and hybrid working structures will impact cybersecurity, what threats are top of mind for security leaders, and how employees' behavior has changed.
Research & Reports
The Psychology of Human Error
Fascinating Insights from academics on why do people make mistakes and why this puts your data at risk. Understand the mistakes that compromise your company’s cybersecurity by learning the psychology behind human error, businesses can better understand how to prevent mistakes from happening before they turn into breaches.
Research & Reports
Opportunity in Cybersecurity Report 2021
This year, we followed up with women working in the field and... things have changed. For the better.We also went straight to the source, and probed recent grads about their potential interest in pursuing a career in cyber.
Research & Reports
The State of Data Loss Prevention
Read our latest research and learn why traditional DLP solutions are failing, and what the future looks like.
Research & Reports
Why the Threat of Phishing Can’t Be ‘Trained Away’
Two thirds of employees are not regularly trained about cyber threats on email. What's more, a significant percentage of those that are trained do not remember what they are taught. So, to what extent can training really stop people falling for phishing attacks?
Analyst Reports See all Analyst Reports
Analyst Reports
The Ponemon Institute: Data Loss Prevention on Email in 2022 Report
This study, independently conducted by the Ponemon Institute, focuses on the rising need for a behavioral intelligence approach to proactively prevent email data loss.
Analyst Reports
Gartner Market Guide for Email Security 2021
Get insights from Gartner on how to define your enterprise email security strategy, latest market trends, top vendors and more.
Analyst Reports
ESG Whitepaper: Closing Critical Gaps in Microsoft 365 Native Security Tools
Learn what’s missing in MS365's native email security and data loss prevention offering, specific gaps in E3 and E5 Microsoft packages, and what is needed to close gaps and strengthen protection.
Analyst Reports
451 Research: DLP Market Insight Report
451 Research is a global IT analyst firm, part of S&P Global. Read 451 Research's analysis of Tessian's approach to email security using ML.
Analyst Reports
Tessian Named Representative Vendor in the 2021 Gartner Market Guide for Data Loss Prevention
Gartner has recognized Tessian as a Representative Vendor in the 2021 Gartner Market Guide for Data Loss Prevention. Download the Gartner Market Guide.
Analyst Reports
2021 Gartner® Market Guide For Data Loss Prevention
A must read guide for security and risk management leaders starting DLP programs to solve complex use cases. Get guidance on DLP market trends and their impact on data security strategies.
Analyst Reports
The Ponemon Institute: Data Loss Prevention on Email in 2022 Report
This study, independently conducted by the Ponemon Institute, focuses on the rising need for a behavioral intelligence approach to proactively prevent email data loss.
Analyst Reports
Gartner Market Guide for Email Security 2021
Get insights from Gartner on how to define your enterprise email security strategy, latest market trends, top vendors and more.
Analyst Reports
ESG Whitepaper: Closing Critical Gaps in Microsoft 365 Native Security Tools
Learn what’s missing in MS365's native email security and data loss prevention offering, specific gaps in E3 and E5 Microsoft packages, and what is needed to close gaps and strengthen protection.
Analyst Reports
451 Research: DLP Market Insight Report
451 Research is a global IT analyst firm, part of S&P Global. Read 451 Research's analysis of Tessian's approach to email security using ML.
Analyst Reports
Tessian Named Representative Vendor in the 2021 Gartner Market Guide for Data Loss Prevention
Gartner has recognized Tessian as a Representative Vendor in the 2021 Gartner Market Guide for Data Loss Prevention. Download the Gartner Market Guide.
Analyst Reports
2021 Gartner® Market Guide For Data Loss Prevention
A must read guide for security and risk management leaders starting DLP programs to solve complex use cases. Get guidance on DLP market trends and their impact on data security strategies.
Infographics
Forrester findings uncover a 268% ROI with The Tessian Cloud Email Security Platform
Download the Infographic →
Analyst Reports
Tessian Named Representative Vendor in the 2022 Gartner® Market Guide for Data Loss Prevention
Read the Case Study
Research & Reports
How Security Cultures Impact Employee Behavior
Download the Report →
Product Datasheets
Tessian Cloud Email Security Platform Overview
Download Now →
Solution Briefs
How Tessian Closes Critical DLP Gaps in Microsoft 365
Download Solutions Brief →