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Email Security Platforms
Overview
Focus
Email Security Platforms
Email Security
Product
Cisco-owned natural language understanding platform for email security against BEC and phishing.
Tessian provides AI-powered email security that prevents accidental data loss, phishing attacks, and misdirected emails by understanding human communication patterns.
Headquarters
Sunnyvale, California
London, United Kingdom
Company size
51-200 employees
201-500 employees
Founded
2017
2013
Pricing details
Source updated
Oct 29, 2026
Oct 29, 2026