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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.

Tessian Guardian – Stop Accidental Data Loss Caused by Misdirected Emails and Misattached Files

Download the Tessian Guardian Datasheet:


Every day, highly sensitive information is being lost through human error on email, with misdirected emails being the most common form of reported data breach to the UK’s Information Commissioner’s Office.


Tessian Guardian tackles the problem of misdirected emails by automatically preventing sensitive information being accidentally emailed to the wrong person. For example, it stops you from sending an email to John Lennon at Company B when you meant to send it to John Lennon at Company A.

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