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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.

October 27 | Fwd:Thinking. The Intelligent Security Summit (Powered by Tessian). Save Your Seat →

Protection for Microsoft Office

Enhance Microsoft 365 Security Capabilities With Tessian

Complement and enhance Microsoft 365 email security with Tessian’s intelligent, behavioral-based email security to automatically prevent threats on email

The Benefits of Tessian Cloud Email Security

Seamless integration with Microsoft


Tessian is built to work alongside Microsoft, and leverages Microsoft APIs to provide additional value to customers. Tessian seamlessly integrates, deploys in minutes with no change to email infrastructure – across all devices, desktop and mobile.


Comprehensive email protection is achieved by combining Microsoft 365 built-in email security that can provide baseline protection against spam and malware with Tessian’s advanced, behavioral based, email threat prevention.




Simplify and Modernize Your Technology Stack

Tessian Cloud Email Security Platform is a fully automated platform that closes critical security gaps in the enterprise security stack.

Automatically prevent advanced threats


While MS365 will scan for known malicious payloads such as links and attachments, Tessian combines its behavioral intelligence modeling and threat intelligence while using a broad range of signals and deep content inspection to automatically detect and prevent the full spectrum of advanced email attacks Including:


  • Business Email Compromise
  • Account Takeover Attacks
  • Zero-day threats 
  • Attacks without payloads
  • Internal Impersonation & CEO Fraud
  • Advanced Spoof Detection
  • Counterparty & Vendor Impersonation
  • Brand Impersonation
  • External Account Takeover
  • Invoice Fraud
Tessian will inspect the context of the email to determine indicators of an attack, notify the user, not giving an opportunity of malware slipping through defenses.


Unburden overwhelmed SOC teams


Tessian does the hard work by not only quarantining known email threats but also detecting and preventing unknown email threats that evade security email gateways. Tessian emphasizes a behavioral and risk-based approach to classify threats and uses natural language processing (NLP) algorithms to perform a content X-ray that detects malicious intent, impersonation, compromise, and payloads.






Remediate with speed


Efficiency gains are further realized in the SOC by automating incident triage and remediation – significantly reducing admin time.


Quarantine, clawback unsafe emails from users’ inboxes, update deny lists and remediate burst attack campaigns with a single click. Or integrate with a SIEM. With Tessian’s no black-box rule, a clear explanation is provided for every action taken. Deeper integrations with Microsoft allow security teams to sync user groups, view emails directly within the portal and more.





Non-disruptive, in-the-moment security awareness coaching


Emails with the highest probability of being malicious are automatically quarantined for inspection and approval by a Security Analyst. For emails with a lower probability of being malicious, Tessian helps build a smarter security culture using in-the-moment security awareness coaching. End-users receive simple explanations of potential risks and are able to self-remediate, which also reduces security teams’ workloads.


  • Non-disruptive, in-the-moment coaching and awareness is provided to end-users through contextualized, easy to understand warning messages.
  • Risk trends downward as users learn more about security through in-the-moment warnings, becoming better at spotting attacks and lowering click-through rates on email




Visibility into email risk


Threat visibility and intelligent risk mitigation are core features of the Tessian Cloud Email Security platform. Security and Risk Management leaders can gain deep visibility into risk levels and drivers at the user, department, and company level. Prioritize mitigation actions and present results to company executives and board members, as evidence of technology reducing risk, not simply reporting it.






Intelligent email security beyond advanced email threat prevention


In addition to the advanced email threat prevention, Tessian offers industry leading email data loss prevention for accidental and malicious data loss on email including mitigation against:


  • Insider threats
  • Data Exfiltration
  • Misdelivered emails and attachments


No rules or policy configurations needed. Customize warning messages, on-demand policy enforcement capability, allowing full control of outbound email traffic.



Download Solutions Brief
Microsoft + Tessian:
Comprehensive Email Security Solution Brief
Complement and enhance Microsoft 365 email security with Tessian’s intelligent, behavioral-based email security to automatically prevent threats on email.

Related Resources

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See Microsoft + Tessian in Action.
Tessian enables security teams to focus on mission critical tasks. Legacy email security approaches simply no longer have a place in an increasingly crowded cybersecurity stack. By leveraging Microsoft 365’s native capability together with Tessian, presents an opportunity for security leaders to enhance email security with a defense in depth approach.