£6.5M
The strategic investment brings the firm's total Series C funds raised to $74m.
Tessian builds machine learning technology to secure the human layer and prevent accidental data loss in enterprises.
Tessian develops human layer security software that predicts and stops advanced threats caused by human error across enterprise communication channels. Founded in 2013, the firm operates offices in San Francisco, Boston and London.

Tim Sadler
CEO and co-founder
Tim previously co-founded and led Tessian through its acquisition by Proofpoint. He also serves as a Sequoia Capital Scout and limited partner at firedrop.
LinkedInThe strategic investment brings the firm's total Series C funds raised to $74m.
March Capital led the Series C round, which values the enterprise security firm at $500m and brings total funding to over $120m.