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For fintechs

Your payment screen is your product. Protect it at the moment it matters most.

Digital accounts, wallets, payment request links, custom checkouts: every fintech has a screen where money changes hands. Proteside makes sure that screen isn’t tampered with, for every customer, in every transaction.

Become a partner
  • Web apps, links and logged-in areas
  • Cards, crypto, Pix and global rails
  • Evidence for audits and partners

The risk, from the fintech’s side

  • Trust is your core asset, and it’s fragile

    One case of a swapped QR code or data captured in your interface becomes news, complaints and customers moving their money out. For a fintech, a payment incident is a brand incident.

  • The browser is hostile territory

    Extensions, malware on the device and third-party scripts run on the same page as your payment flow. Your back-end security can’t see any of it.

  • Regulation and due diligence

    PCI DSS for cards, payment scheme rules and audits from banking partners all call for proof that your environment is intact.

The business case

The cost of an incident is measured in customers, not transactions

For a fintech, the damage from a single tampered screen goes far beyond the amount diverted.

  • 1 caseof a scam in your interface going public is enough to drive balances out and waste what you spent acquiring those customers.
  • Secondsis all it takes for an instant payment to settle. The check has to happen before.
  • Every methodin your portfolio (Pix, cards, crypto, invoicing) in a single layer instead of one tool per product.

Priced by volume or per active customer, depending on your fintech’s model.

How it protects your fintech

  • 1

    Records what’s legitimate

    The expected QR code, payment key, amount, fields and scripts on every payment screen in your product.

  • 2

    Checks on the device

    In the customer’s browser, on every transaction, it compares what’s displayed with what was issued.

  • 3

    Blocks and records

    Any mismatch is stopped before confirmation, with an alert and an auditable trail.

A script or SDK in your web layer, with no changes to your critical infrastructure. How it works

What fintechs get

  • Payment interface integrity

    Tampered QR codes, payment keys, forms and addresses blocked at the moment of confirmation.

  • Coverage across your portfolio

    Cards, crypto, Pix, boleto and global instant payment rails in the same layer.

  • Audit-ready evidence

    Script inventory, alert trail and an exportable report for QSAs and banking partners.

  • Lightweight integration

    No noticeable performance impact and nothing to change in your back end.

  • B2B model when you need it

    If your fintech provides checkout to business customers, protection can be extended to them, priced per active customer.

One layer for every payment method in the world, on your page

Partnership and distribution

How to buy

The model follows the way your product is built:

  • Your own use: contract based on monitored pageview volume
  • Checkout for business customers: priced per active customer
  • Pilot with your real flow before expansion

We design the proposal around your fintech’s volume and products.

The back end is yours. The customer’s browser isn’t. Proteside protects the part of the transaction that runs far from your infrastructure.

Frequently asked questions

My fintech isn’t an e-commerce business. Is Proteside still relevant?

Yes. Proteside protects any page where a payment is displayed and confirmed: checkouts, payment request links, wallets and logged-in areas. If there’s a QR code, payment key or payment form on screen, there’s an attack surface.

Does it work in native apps?

Proteside protects web interfaces, including web screens loaded inside apps. For fully native flows, we agree on the scope during the pilot.

How does Proteside handle data protection laws such as Brazil’s LGPD?

The integrity check doesn’t depend on payers’ sensitive data. Data handling follows Brazil’s LGPD, with privacy by design.

The moment of payment is the same. Your business isn’t.

Lock down the screen where money changes hands

Book a demo using your fintech’s real flow, or talk to our team.