HARPP DDoS Mitigator vs Imperva DDoS Protection: Side-by-Side Comparison (2026)

HARPP DDoS Mitigator

Mid-market and enterprise security teams protecting DNS and web infrastructure from sustained volumetric attacks will find value in HARPP DDoS Mitigator's hardware-based DDI detection, which processes traffic anomalies in real time across 34+ data sensors without relying on cloud scrubbing. The appliance covers both NIST DE.CM continuous monitoring and PR.IR infrastructure resilience, particularly for organizations that need localized, non-delegated mitigation. This is not the tool for shops that lack on-premises deployment capacity or those expecting a managed service; HARPP requires dedicated hardware and internal operational ownership.

Imperva DDoS Protection

Teams protecting APIs and web applications under sustained volumetric attack need Imperva DDoS Protection for its 3-second mitigation SLA on Layer 3 and 4 floods, which eliminates the window where traffic actually reaches your infrastructure. The 13 Tbps global scrubbing capacity and Anycast routing handle the size of attacks most vendors only claim to handle. Skip this if your DDoS concern is primarily application-layer sophistication; Imperva's Layer 7 protection exists but the real competitive edge is raw speed on the attacks that actually cause downtime.