Imperva alternative: bot and fraud decisions your backend can explain

Why teams look for an Imperva alternative

Imperva is best known as an application security platform: web application firewall, DDoS protection, CDN, API security and bot protection. Thales completed its acquisition of Imperva in December 2023, so the product now sits inside a larger security portfolio. Teams that search for an Imperva alternative for bots usually fall into two groups.

The first group does not run Imperva's WAF and wants bot and fraud detection without adopting a new security stack or deploying a connector. The second group already has WAF and bot rules in place but still sees fraud that looks human on each request: one person running many accounts, logins from spoofed devices behind home IP addresses, promo codes claimed again and again. Both groups need decisions tied to users and accounts, delivered to the application, which is where Kavra works.

How Imperva Advanced Bot Protection works

Imperva describes a multi-layered approach that combines direct client interrogation, behavior analysis, machine learning, connection characteristics and threat intelligence feeds. It says this lets it examine over 700 dimensions to separate human, good bot and bad bot traffic.

• Single-stack deployment: Advanced Bot Protection integrated with Imperva's Cloud WAF, as part of a Cloud Application Security platform that combines CDN, WAF, DDoS protection and bot protection.
• Connector deployment: integrations into technologies you already run, which Imperva lists as including AWS, Cloudflare, F5 Networks, NGINX and Fastly.
• Account Takeover Protection: a separate Imperva product for login endpoints. Imperva says it analyzes login traffic patterns, assigns risk scores, detects user behavior anomalies and offers zero-day leaked credentials detection so you can reset exposed passwords.

In both models, bot policies are applied by Imperva's cloud or by the connector, not by your application code. How individual decisions are explained to analysts is not publicly documented in the materials we reviewed.

Running Kavra with Imperva

Kavra and Imperva can be complementary. Imperva keeps protecting the application and network: WAF rules, DDoS mitigation, content delivery and bot policies at its layer. Kavra runs on the flows where money and accounts are at stake, such as signup, login, promotions, checkout and withdrawal, and gives your backend an explained verdict to combine with its own data.

Because Kavra does not sit in the traffic path, adding it changes nothing in your Imperva setup. Start in observe-only mode, compare Kavra's findings with what Imperva already blocks and with your fraud outcomes, and then decide which cases each layer should own.

When Imperva may be the better fit

Kavra is a detection and decision layer, not a security platform. Imperva is likely the better fit if:

• You already run Imperva Cloud WAF and want bot policies in the same stack and console.
• You need DDoS protection, a WAF or a CDN. Kavra provides none of these.
• You want one vendor for WAF, API security and bots, or you are consolidating security vendors.
• Leaked credential detection at login is a priority. That is part of Imperva's Account Takeover Protection and not a Kavra feature.
• You want enforcement in front of the application without adding code to your backend.