StackHawk: $12 Million Secured For API Security Platform

By Amit Chowdhry • May 23, 2025

StackHawk, a shift-left API security platform company, announced it has taken on $12 million in additional funding from Sapphire and Costanoa Ventures to help security teams keep up with the pace of AI-driven development. Sapphire and Costanoa Ventures also co-led StackHawk’s Series B funding in 2022, bringing the company’s total funding to $47.3 million.

Developers can deploy code much faster using AI, but much of that code contains security weaknesses. So AppSec teams spend hours prioritizing issues, creating tickets, and chasing busy developers, causing vulnerability backlogs to balloon as time is spent on non-remediation tasks. Applications and clouds grow less secure, and hackers exploit the widening productivity gap between development and security teams.

What the funding will be used for: With this funding round, StackHawk will expedite shipping products and features that simplify modern teams embracing AI-driven development to scale safely, especially in data-sensitive industries such as healthcare and fintech.

KEY QUOTES:

“We’re seeing our customers embrace AI-driven development tools like Cursor and ship new applications faster than ever. Security professionals were already outnumbered by developers 100:1 and struggling to keep up with the backlog of issues – we need new solutions to help engineering teams identify the most important security issues and help engineers actually fix those issues being generated by the speed of AI.”

Joni Klippert, CEO and Co-Founder of StackHawk

“StackHawk is the only API security solution that ensures the most important vulnerabilities are identified and addressed during the development stage of software delivery, before they are shipped to production and can impact customers. They are in the ideal position to innovate with new solutions that ensure enterprises maintain a strong security posture in the age of AI.”

Greg Sands, Founder and Managing Partner at Costanoa Ventures