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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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Prevent the Full Spectrum of Inbound Email Attacks with Tessian Defender

Tessian’s context aware, AI-based email defense detects and prevents the full spectrum of email attacks from hitting the inbox.

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Prevent Advanced Email Attacks that Bypass Legacy Email Security Solutions

See how you can detect and prevent the advanced email attacks that legacy solutions miss, by using an Integrated Cloud Email Security solution.

How Defender Works

Prevent The Threats That Bypass Legacy Solutions

Use Threat and Behavioral Intelligence to stop the full spectrum of advanced attacks on email.

Automatically Detect and Prevent Advanced Email Attacks in Real-Time

Tessian’s context aware, AI-based technology stops email threats that Secure Email Gateways and the built-in security controls within Microsoft and Google fail to detect. Tessian detects the full spectrum of email threats coming into the inbox such as business email compromise (BEC), account takeover (ATO) and ransomware.

Seamless integration with Microsoft

Tessian seamlessly integrates with Microsoft 365 in a few clicks. Layer Tessian on top of the baseline protection from Microsoft’s security controls for defense in depth and simplify your email security stack by replacing the need for a Secure Email Gateway.

Build a smarter security culture

Tessian provides contextual in-the-moment training for employees. When email threats are detected, Tessian security notifications equip your people with the information they need to confidently make the right security decision. Tessian’s context aware, AI-based technology understands what normal behavior looks like for each person and tailors alerts so they’re relevant and non-disruptive to employees.

Unburden the SOC

Tessian provides insights and signals behind every threat detected, allowing your security team to analyze, triage and remediate threats faster and more efficiently. Customize Tessian to determine whether risky emails are quarantined for security review or delivered to employees with contextual warning banners.

Tessian Defender secures all enterprise email environments.

Tessian offers extensive deployment options for Microsoft 365,. Exchange and Google Workspace email environments. Integrate with your SIEM/SOAR via RESTful APIs.

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