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Tessian’s mission is to secure the human layer. Using machine learning technology, Tessian automatically stops data breaches and security threats caused by human error – like data exfiltration, accidental data loss, business email compromise and phishing attacks – with minimal disruption to employees’ workflow. As a result, employees are empowered to do their best work, without security getting in their way. Founded in 2013, Tessian is backed by renowned investors like Sequoia, Accel and Balderton and has offices in San Francisco and London.

Products & Services

Email security with unparalleled visibility into human behavior.
  • Tessian Defender - Prevent inbound email attacks that bypass legacy email security solutions
  • Tessian Guardian - Automatically prevent accidental data loss caused by misdirected emails and misattached files
  • Tessian Enforcer - Automatically prevent data exfiltration over email
  • Tessian Human Layer Risk Hub - Human Layer Risk Management, Made Easy
  • Tessian HLS Intelligence - Lower risks posed by employees' poor security decisions on email with Human Layer Intelligence
With Tessian, you predict and preempt security risks and prevent human error.

Industries Served

Multiple industries, but the most useful for industries that handle sensitive information.
  • Financial Services
  • Legal
  • Healthcare
  • Tech

Clients Include

  • Dentons
  • Evercore
  • ARM
  • Man Group PLC
  • RightMove
  • Schroders
  • K&L Gates
  • BDO
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