Imperva API Security is a commercial API security solution by Imperva. Source Defense How it works is a commercial runtime application self-protection solution by Source Defense. Features, integrations, deployment and the company behind each one, side by side.
What our shortlists say about the one we picked.
Best for: Imperva WAF customers adding API discovery
Imperva earns a spot because it catches one user reading another user's data as it happens and can block it inline through the WAF you may already run. It suits you best if that WAF is Imperva Cloud WAF or WAF Gateway, and its self-managed option helps on hybrid estates. Imperva is now part of Thales, so check the roadmap and support model after that move.
From Best API Security Solutions for Business, Fall 2026
Reviewed by Nika (Nikoloz) Kokhreidze.
Unified API security platform for discovery, risk assessment, and mitigation
Client-side security for websites against 3rd party vendor attacks
See more solutions in this category, or build a security stack from your picks.
Based on what each listing shows: deployment, company size, price and open source.
Imperva API Security fits if you need both cloud and on-premises options.
Source Defense How it works fits if you want a cloud product.
Common questions when comparing Imperva API Security vs Source Defense How it works for API security.
Imperva API Security: Unified API security platform for discovery, risk assessment, and mitigation. Built by Imperva.
Source Defense How it works: Client-side security for websites against 3rd party vendor attacks. Built by Source Defense.
The table above shows where their features, integrations, deployment and company size fit differ.
Imperva API Security is made by Imperva. Source Defense How it works is made by Source Defense. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit.
In part. Imperva API Security and Source Defense How it works are not in the same category on CybersecTools. Use the table above to see where features, deployment and company size fit differ.
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