# Imperva alternative: bot and fraud decisions your backend can explain

Source: https://kavralab.com/compare/imperva-alternative/

Imperva Advanced Bot Protection, now part of Thales, is deployed with Imperva's Cloud WAF or through connectors into platforms such as AWS, Cloudflare, F5, NGINX and Fastly. **Kavra** integrates at the application: one script and one API call return an explained verdict per request, with multi-accounting and account linking built in, and your backend decides.

- **Kavra approach:** Script plus API call, explained verdict to your backend
- **Imperva approach:** Cloud WAF single stack, or connectors into your stack
- **Visitor friction:** Both aim to stay out of the way of real users
- **Best for:** Kavra: account-level fraud. Imperva: WAF plus bots in one stack

## 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.

## Kavra vs Imperva at a glance

Based on Imperva's public product pages, blog and press releases as of September 2026.

|  | Kavra | Imperva Advanced Bot Protection |
|---|---|---|
| What it is | Bot and fraud detection for websites and apps | Bot protection within Imperva's application security platform |
| Deployment | One async script and one server API call | With Imperva Cloud WAF, or connectors into AWS, Cloudflare, F5, NGINX, Fastly |
| Traffic routing | None: your traffic keeps its current path | Through Imperva Cloud WAF, or via a connector in your stack |
| Who enforces | Your backend, with your own rules | Imperva policies applied in front of your application |
| Output | Verdict with headline, findings and risk by domain | Not publicly documented in detail |
| Account takeover | Login compared with the account's own history | Separate product: Account Takeover Protection |
| Multi-accounting and account linking | Built in: one actor linked across accounts | Not publicly documented |
| Fingerprint rotation | Tracked as one actor with N rotations | Not publicly documented |
| Leaked credential checks | Not a Kavra feature | Zero-day leaked credentials detection in Account Takeover Protection |
| DDoS, CDN and WAF | Not included; Kavra is not a CDN or WAF | Available in the same platform |

## Security stack vs decision layer

**Kavra**

- Lives in your pages and your server code
- Returns evidence your backend and analysts can read
- Links devices and accounts to the actor behind them
- Works behind any CDN or WAF, including Imperva

**Imperva Advanced Bot Protection**

- Runs with Imperva Cloud WAF or through a connector
- Applies bot policies before requests reach the application
- Sits next to WAF, DDoS and CDN in one platform
- Account takeover handled by a separate product

## What Kavra adds for fraud and risk teams

Kavra analyzes 3,000+ data points on every visit across network, device, browser, behavior and identity layers.

- **One actor across accounts**: Returning devices are recognized across visits and accounts that share an actor are linked, which stops [multi-accounting](https://kavralab.com/solutions/multi-accounting/) and bonus farming at signup.
- **Logins checked against history**: Each login is compared with the account's own trusted devices and networks: new device, new network, impossible travel, known-bad device. See [account takeover](https://kavralab.com/solutions/account-takeover/).
- **Automation that looks human**: [Headless browsers](https://kavralab.com/detect/headless-browsers/), automation frameworks with stealth plugins and HTTP clients imitating browsers are caught by contradictions between layers.
- **Proxies seen for what they are**: Kavra measures real exit IPs of commercial residential and mobile proxy networks, useful against [web scraping](https://kavralab.com/solutions/web-scraping/) and account abuse from clean-looking IPs.

## 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.

## How to trial Kavra without touching Imperva

1. **Choose one costly flow**: Start where abuse hurts most today: signup bonuses, login, checkout or a scraped pricing endpoint.
2. **Add the script and one call**: Load Kavra's async script on that page and call the API from the matching server endpoint. Imperva stays exactly as configured.
3. **Watch in observe-only mode**: Review Kavra's verdicts and evidence in the console next to your Imperva events and your own fraud outcomes, without blocking anyone.
4. **Act where Kavra adds signal**: Turn on allow, verify or block rules only for the cases your current stack does not already catch, such as linked accounts.

## 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.

> **Key takeaway:** Imperva bundles bot protection into an application security stack deployed at its cloud or through connectors. Kavra is an in-app decision layer that explains every verdict and links the accounts behind one actor. Pick by where you want decisions made, or [talk to our team](https://kavralab.com/contact/) about running Kavra next to Imperva.

## Why teams choose Kavra

One script and one API call give every visit an explained risk assessment.

- **No stack change**: No WAF, CDN, DNS or connector change. First results the same day.
- **Explained decisions**: Plain-language headline, findings, risk by domain and a recommendation on every assessment.
- **Account fraud built in**: Multi-accounting, account linking, trusted devices and login history in one assessment.
- **Rotation is a signal**: A device that changes its fingerprint stays one actor, with each rotation counted.
- **Your backend decides**: Kavra recommends allow, verify or block. You set the rules, starting in observe-only mode.

## FAQ

### Is Imperva part of Thales?

Yes. Thales announced on December 4, 2023 that it had completed the acquisition of Imperva. Imperva's product pages continue to describe Advanced Bot Protection and Account Takeover Protection under the Imperva name. Kavra Lab is an independent company and not affiliated with either.

### Do I need Imperva's Cloud WAF to use Imperva bot protection?

Not necessarily. Imperva describes two deployment options: a single stack integrated with its Cloud WAF, or connectors into technologies you already run, such as AWS, Cloudflare, F5, NGINX and Fastly. Kavra needs neither: one script in your pages and one API call from your server.

### Can Kavra replace Imperva?

Only the part of it that decides about visitors and accounts. Kavra is not a WAF, CDN or DDoS service. If you rely on Imperva for those, keep it and add Kavra on signup, login, promotions and checkout, where account-level evidence and explained verdicts help your fraud team most.

### How does Kavra detect account takeover differently from Imperva?

Imperva offers a separate Account Takeover Protection product that analyzes login traffic, scores risk and checks for leaked credentials. Kavra compares each login with the account's own trusted devices and network history, flags new devices, impossible travel and known-bad devices, and lets you mark or revoke devices through its API. It does not check leaked credentials.

### Does Kavra work with Imperva connectors in place?

Yes. Kavra does not proxy or inspect your traffic in line, so it runs alongside any CDN, WAF or bot connector. Your backend receives Kavra's verdict with its evidence and combines it with whatever your edge layer already decided.

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Kavra Lab: bot and fraud detection that explains every decision. Book a demo: https://kavralab.com/contact/