Intelligent Cloud Email Security

An Intelligent Approach to Email Data Loss Prevention

Detect and prevent email data loss caused by employee mistakes and insider threats.

Trusted by World-Leading Enterprises

Detect and Prevent Accidental and Malicious Email Data Loss Incidents that Rule-Based DLP Solutions Miss.

Prevent Data Loss Incidents on Email

Keep sensitive information safe by preventing data exfiltration, misdelivered emails, and misattached files.

Save Time Spent on DLP Admin

Tessian deploys in seconds and requires zero configuration or day-to-day administration.

Make End-Users Part of Your Layered Defenses

Contextual security notifications coach employees to make the right security decision every time.

Stop Misdirected Emails and Insider Threats

Prevent Data Loss on Email Without Rules or Deny-Lists

Automatically Stop Mistakes From Turning into Security Incidents

Protect your sensitive data, meet regulatory compliance and customer confidentiality agreements and eliminate the risk of reputational damage by preventing misdirected emails. Tessian’s behavioral intelligence modeling and machine learning algorithms use relationship graphs, and deep content inspection to understand if an email is being sent to the wrong person.

See how Tessian Guardian stops emails being sent to the wrong person

Automatically Stop Data Exfiltration and Insider Threats

Automatically protect against data exfiltration and safeguard intellectual property without predefined rules or deny-lists. Tessian analyzes millions of data points for every outbound email, and detects anomalies that indicate data exfiltration – stopping risky emails before they leave the organization.

See how Tessian Enforcer prevents insider threats

Improve Security Behaviors

Tessian’s contextually relevant in the moment notifications give end-users the knowledge they need to confidently make the right security decision, whether that’s updating the recipient of an email, or thinking twice about sending sensitive information to their personal email account.

Learn how in-the-moment coaching helps build a stronger security culture

Trusted By World-Leading Enterprises

See What Our Customers Are Saying

Learn why our customers love Tessian, and see the positive impact Tessian Cloud Email Security has had on their organizations.

"Tessian does more than just detect and prevent threats. We definitely view it as a user awareness tool as well. Employees engage with the warnings and, month-on-month, we see how their behavior can change."

Minesh Nana

Data Loss Prevention Manager at Rand Merchant Bank

"We are seriously impressed by the rule building capability of the product which has made it incredibly easy to construct policies in minutes or less."

Alex Richards

Head of Insider Threat Program at Investec

"ML-powered security technology like Tessian produce better results and offer a better return than pop-ups or noisy, rule-based DLP. The opportunity to 'set-it-and-forget-it' is huge."

Jamie Travis

Head of Infosecurity at Herbert Smith Freehills

“Tessian proved its value after a few weeks of being deployed firm-wide. For the first time ever, we now have visibility and control over inadvertent data loss through misaddressed emails and information being sent to unauthorized email accounts."

Neil Wellard

Head of Information Security, Man Group

Accelerate Incident Response and Reduce Workloads

Save time with automated triage, investigation, remediation and risk reporting. Access insights in your preferred security tools with Tessian’s API, and view policy performance to determine what types of data loss are most prevalent in your organization.

See how Tessian helps security teams work smarter, not harder