Top 10 Best API Security Testing Companies in 2025

GBHackers’ Top 10 Best API Security Testing Companies in 2025 ranks Salt Security, Traceable, Imperva, APIsec, StackHawk, Akto[.]io, Cequence Security, Noname Security, Levo and Treblle as the leading API security testing providers for the year. The piece, authored by Varshini and published on 19 September 2025, highlights each vendor’s strengths, features and target audiences, with a comparison table covering automated discovery, business logic testing, real-time alerts and CI/CD integration.

It notes Salt Security’s AI-powered runtime protection and behavioural analytics, Traceable’s full-lifecycle API security and contextual fuzzing, and Imperva’s combination of API protection with existing cloud security offerings. APIsec and StackHawk are positioned for continuous, automated testing across the SDLC and shift-left development, while Akto[.]io and Levo emphasise large test repositories, custom rules and developer-friendly risk dashboards.

The review also covers Cequence Security’s autonomous test planning and Noname Security’s all-in-one platform for discovery, testing and compliance, alongside Treblle’s real-time monitoring and security audits for agile teams.