This page is designed to help you find out whether Proteside is good and if it is the right choice for you.
Proteside is a cybersecurity layer that checks, on the payer’s screen, that the payment details are exactly what the seller issued, and blocks any swap before the payment is confirmed.
Online stores now lose sales to attacks that never touch their servers. Malicious code injected into a legitimate checkout through a compromised plugin, theme or third-party script can swap a Pix QR code, change a boleto number, replace a crypto wallet address or copy card data while the customer types. The payment still looks normal: right store, right amount. The money goes to someone else, and the store gets the blame.
Proteside protects that moment. When your store or payment provider creates a charge, Proteside records what was issued. A lightweight script on the payment page then compares what the customer actually sees and copies with that record, in every session and on every order. If something does not match, the customer sees a warning instead of the altered code, the payment never goes out, and your team gets an alert with the evidence.
What it covers:
Proteside is not an anti-fraud tool, a firewall or a gateway: it works alongside them, on any e-commerce platform and with any payment provider. Setup takes minutes: paste one script, with no platform change. Available in 12 languages, with a 14-day free trial.
Listed in
Pix Payment Security
Blocks swapped Pix QR codes, altered copy-and-paste codes and fake payees on the checkout before the customer pays (Brazil)
Boleto Payment Security
Detects altered boleto numbers and barcodes on screen and stops payment to the wrong beneficiary (Brazil)
Credit Card Payment Security
Protects credit card forms against skimming, fake overlays and unauthorized scripts, with PCI DSS 6.4.3 and 11.6.1 evidence
Debit Card Payment Security
Blocks capture of debit card data and PIN, fake payment screens and compromised scripts on the checkout
Stablecoin Payment Security
Stops swapped wallet addresses, wrong networks and altered amounts for USDT, USDC and other stablecoins before funds are sent
UPI Payment Security
Blocks swapped UPI QR codes, tampered VPAs and altered amounts on online checkouts (India)
PayNow Payment Security
Protects PayNow and SGQR codes shown at checkout against swaps and fake payees (Singapore)
DuitNow Payment Security
Blocks swapped DuitNow QR codes and altered payee details on online stores (Malaysia)
PromptPay Payment Security
Detects swapped PromptPay QR codes and wrong merchant IDs before the customer confirms (Thailand)
QR Ph Payment Security
Protects QR Ph codes on the checkout against tampering and payment to the wrong account (Philippines)
FPS Payment Security
Blocks swapped FPS and HKQR codes and altered payee details on online payments (Hong Kong)
CoDi Payment Security
Detects altered CoDi payment request QR codes on the checkout before the customer accepts (Mexico)
Transferencias 3.0 Payment Security
Protects interoperable transfer QR codes against swaps on online checkouts (Argentina)
PCI DSS 6.4.3 and 11.6.1
Script inventory, authorization and integrity monitoring with audit-ready reports
Online stores of any size that accept Pix, boleto, cards, stablecoins or instant payments. E-commerce platforms that want to protect every store they host. Payment providers, gateways, fintechs, merchants of record, banks and BaaS companies that show payment pages or QR codes to their customers. Security and compliance teams that need evidence for PCI DSS 6.4.3 and 11.6.1.
Proteside checks the payment itself, not only the scripts around it. When a store or payment provider creates a charge, Proteside records what was issued: the Pix QR code, the boleto number, the wallet address or the card form. It then compares that record with what the customer actually sees and copies on screen, in every real session, before the payment is confirmed. If something was swapped, the customer sees a warning instead of the altered code, and the payment never goes out. It covers credit and debit cards, Pix, boleto, stablecoins and instant payment QR codes such as UPI, PayNow, DuitNow, PromptPay, QR Ph and FPS, with PCI DSS 6.4.3 and 11.6.1 evidence included.
Most client-side security tools were built for one problem: card data theft and PCI script compliance. Proteside covers that too, with script inventory, authorization and integrity monitoring. It also protects the payment methods where fraud grows fastest: instant payments, QR codes and stablecoins.
It blocks the swap before payment instead of only reporting it afterwards. It runs in real customer sessions, not only in periodic scans by a crawler. It needs no proxy and no change of platform or payment provider: one script, installed in minutes. Plans are priced by checkout pageviews, with a 14-day free trial.
Proteside was born in Brazil, where Pix became the most used way to pay online, and where criminals learned to profit from it without hacking any bank. Instead, they inject a few lines of code into legitimate online stores. That code swaps the Pix QR code at checkout: the customer pays the right amount, in the right store, and the money goes to a different account. In September 2026, researchers found the same kind of code running on dozens of Brazilian online stores at once. Firewalls, anti-fraud tools and gateways don’t see this attack, because every transaction looks valid. We built Proteside to protect that blind spot: the payer’s screen, in the moment of payment. Then we extended it to cards, boleto, stablecoins and the instant payment systems of Asia and Latin America.
A lightweight JavaScript SDK that runs on the checkout page and compares what is displayed with what was issued. A web dashboard built with Next.js and TypeScript, on PostgreSQL. A global CDN to deliver the SDK. A public REST API (OpenAPI 3) with scoped tokens and signed webhooks. Integrations with Slack, Microsoft Teams and email for alerts.
Tokeflow.com Vipter.com + more 1000 stores a round the world.
We have collected here some useful links to help you find out if Proteside is good.
Check the traffic stats of Proteside on SimilarWeb. The key metrics to look for are: monthly visits, average visit duration, pages per visit, and traffic by country. Moreoever, check the traffic sources. For example "Direct" traffic is a good sign.
Check the "Domain Rating" of Proteside on Ahrefs. The domain rating is a measure of the strength of a website's backlink profile on a scale from 0 to 100. It shows the strength of Proteside's backlink profile compared to the other websites. In most cases a domain rating of 60+ is considered good and 70+ is considered very good.
Check the "Domain Authority" of Proteside on MOZ. A website's domain authority (DA) is a search engine ranking score that predicts how well a website will rank on search engine result pages (SERPs). It is based on a 100-point logarithmic scale, with higher scores corresponding to a greater likelihood of ranking. This is another useful metric to check if a website is good.
The latest comments about Proteside on Reddit. This can help you find out how popualr the product is and what people think about it.
Do you know an article comparing Proteside to other products?
Suggest a link to a post with product alternatives.
Is Proteside good? This is an informative page that will help you find out. Moreover, you can review and discuss Proteside here. The primary details have been verified within the last quarter. So they could be considered up to date. If you think we are missing something, please use the means on this page to comment or suggest changes. All reviews and comments are highly encouranged and appreciated as they help everyone in the community to make an informed choice. Please always be kind and objective when evaluating a product and sharing your opinion.
