Imperva WAF

Imperva has the largest mind share in the WAF market for a reason that independent testing confirms: the 0.009% false positive rate in head-to-head evaluations is the best in the category by a significant margin. For organisations where legitimate traffic disruption from WAF false positives is a business risk, Imperva's precision is a genuine operational advantage. The unified platform combining WAF, API security, DDoS protection, and bot management under one console also reduces the vendor count that security teams need to manage for application protection.

The Thales acquisition in 2023 introduces the standard PE-to-strategic-acquirer transition questions about pricing and roadmap continuity that buyers should address with current Imperva account teams.

The verdict: Imperva App Protect is right for enterprises wanting the most proven WAF with the lowest false positive rate, on-premises deployment option, and unified API and application security. SMBs wanting simpler deployment should evaluate Cloudflare or AppTrana.

Last reviewed: May 2026

Strongest: OWASP Top 10 coverage

Watch out for: CDN & network quality

Best for

Enterprises needing the most mature WAF with deep bot management and flexible cloud/on-premises deployment.

Not suitable for: Organisations wanting pure SaaS — on-premises complexity and Thales acquisition impact evaluation is needed.