# How RockWallet uses Sardine

**\<0.3%** Chargeback rate maintained through continuous rule

As published on [sardine.ai](https://www.sardine.ai/customers/rockwallet). Captured by usedby on 2026-10-08.

- Company: [RockWallet](https://www.usedby.ai/companies/rockwallet.md)
- Tool: [Sardine](https://www.usedby.ai/tools/sardine.md)
- Teams: fraud and compliance teams

## What the story says

RockWallet / MNEE App, a U.S. crypto and fiat payments platform, uses Sardine's device intelligence, behavioral biometrics, rules-based scoring and sanctions screening to prevent fraud, block bot attacks and keep chargebacks below its contractual limit.

Summary written by usedby from the source page, in English. The figures are those of Sardine and RockWallet, not ours.

> Through tailored risk rules aligned to business needs, chargeback activity was reduced by approximately 35% year-over-year, with the chargeback rate maintained well below the 1% threshold throughout the period.

- **23,000**: “Over 23,000 fraudulent account signups were blocked during a single coordinated bot attack”
- **40 days**: “New fraud rules are backtested across 40 days of live ACH data before deployment, achieving approximately 90% rule precision.”
- **6,000**: “These checkpoints analyze over 6,000 risk signals, including behavioral biometrics that detect guided mouse movements or the use of remote access tools.”

> The device data is extremely handy. The fraud attack started with us picking up device spikes. Then we started diving deeper and deeper with Sardine and were able to find something else happening.
>
> Saleha Sajid, Senior VP of Payments and Fraud

## What usedby checked

We compared the story with its live page on 2026-10-08.

- Checked: the figure \<0.3% is on the page; its label is our wording.
- Checked: the passage quoted above is copied word for word from the page, near the name of RockWallet.
- Checked: RockWallet uses Sardine. Confirmed line. Latest check across sources: 2026-10-08.
- Not checked: the result itself. We quote it; we did not measure it.

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Source: https://www.usedby.ai/case-studies/rockwallet-mnee-app-sardine · How we check: https://www.usedby.ai/methodology