The Daily Raise/August 3, 2026
Funding round
Horizon3 raises $250 million Series E round
Horizon3 (United States) has raised $250 million in a Series E round, announced on August 3, 2026. The company is Autonomously tests organizations’ production environments for exploitable security weaknesses. The round was led by NightDragon, with participation from NEA.
Horizon3 raised a $250 million Series E to scale autonomous security validation as it reported rapid revenue growth and more than 7,000 customers.
Company
Horizon3
Amount
$250 million (~$250M)
Round
Series E
Sector
Cybersecurity
Country
United States
Announced
August 3, 2026
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This deal appeared in The Daily Raise, August 3, 2026. Get the next edition in your inbox.
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