A10 Networks, a publicly traded networking and security company in San Jose, Calif., has acquired TrojAI, a Saint John, N.B., startup that tests and protects AI models and agents, the company announced June 15. The price was not disclosed.
The sale is a notable exit for Atlantic Canada's security sector and another sign that larger vendors are buying their way into AI security rather than building it.
What TrojAI does
TrojAI offers two layers of protection. During development, it red-teams AI models, agents and applications to find weaknesses. Once those systems are running, it watches for attacks in real time. A10 said it will pair TrojAI's software with its own hardware-based AI firewall so customers can run secured AI on their own premises, in the cloud or in a mix of both, a pitch it frames around sovereign AI.
A10 said it does not expect the deal to have a material effect on its 2026 financial results.
The Canadian team
According to Entrevestor, TrojAI's 22 employees will remain in Saint John and the team may grow. Co-founders James Stewart and Stephen Goddard started the company around 2020 after selling an earlier venture, EhEye, to Patriot One Technologies of Toronto. Lee Weiner became chief executive in March 2024, with Stewart moving to chief technology officer.
TrojAI's most recent equity round, closed in 2024, raised US$5.75 million. Its Atlantic Canadian backers include the New Brunswick Innovation Foundation, Build Ventures and Concrete Ventures. Entrevestor reported that A10 first approached the company about six months before the announcement.
Why it matters
As businesses connect AI agents to internal data and tools, attacks such as prompt injection and model manipulation have become a practical concern rather than a research topic. Security vendors including F5, Fortinet and eSentire have also bought AI security startups in 2026. For Canadian customers, A10 has not said whether TrojAI's products will continue under their own name or be sold only as part of A10's portfolio.
