Arcjet, the security platform that ships with your code, has raised
$8.3 million in Series A funding to help developers stay ahead of a new generation of AI-driven attacks. The
round was led by Plural and Ott Kaukver, former CTO of Twilio and Checkout.com, with
participation from previous investors Andreessen Horowitz and Seedcamp, as well as new strategic angels including
Jeff Lawson (former CEO, Twilio) and Feross Aboukhadijeh (CEO, Socket).This funding brings
Arcjet's total funding to $12 million and will accelerate product development of Arcjet’s developer-first native security platform for modern applications.
Arcjet’s approach is already resonating with developers building in high-stakes environments.
More than 1000 developers across AI and e-commerce are using Arcjet to protect more than 500 production applications processing millions of requests every day. One early Arcjet customer was able to reduce serverless cloud costs for their content-heavy community forums by 66% with Arcjet’s protections against malicious bot scraping. Another was able to rapidly secure a new finance platform against common attacks, completing a security audit ahead of a crucial launch deadline.
“Security has to live inside your code if it’s going to keep up with modern threats,” said
David Mytton, Arcjet founder and CEO. “We built Arcjet to make AI-powered defenses a native part of the development process - with minimal overhead and APIs that feel familiar. This funding will accelerate our mission to make embedded in-code protection the default for modern applications.”
Sten Tamkivi, partner at Plural, said, “David is an exceptional repeat founder who combines deep technical expertise with a rare understanding of developers’ needs. The traction and credibility that Arcjet has built within a fairly short period of time is really remarkable - thousands of live websites now trust Arcjet to protect them from potentially existential threats.
At Plural, we back serious founders who execute with pace and conviction. David and his team are doing exactly that.”“Cybersecurity provides a pillar of trust for the digital economy,” said
Ott Kaukver. “In modern web development, where developers run their code at the edge, the traditional single wall of security can no longer reliably protect an app or a business. By embedding protection directly into code,
Arcjet is shaping a safer future for the internet.”“As software development accelerates with AI agents, AI coding tools, and new frameworks, security needs to move just as quickly,” said Zane Lackey, General Partner at Andreessen Horowitz. “Arcjet’s approach is groundbreaking because it embeds AI defenses directly inside the code, analyzing every request in real time without slowing developers down. This is the kind of developer-first innovation that can redefine how modern applications stay secure.”
“AI is transforming how attackers operate, but what developers can build to mitigate,” commented Carlos Eduardo Espinal, Managing Partner at Seedcamp. “Arcjet tackles this by shipping security with code, making protection part of its DNA rather than an afterthought. This is the kind of foundational shift we look for at Seedcamp, and we’re proud to support the team as they pioneer the next generation of cybersecurity.”
For more information, please visit Plural Features.
