PCI Compliance Support –
Made Simple

Supporting PCI DSS 4.0.1 compliance for payment page security, script monitoring and protecting customers from web skimming attacks.

Access your PCI DSS 4.0.1 Report now.

Trusted by global names, built for growing brands

Over a decade of trust from some of the world’s biggest brands

European eCommerce Awards: Software of the Year

Global eCommerce Awards: Software of the Year

Your Website Could Be Vulnerable
Right Now

PCI DSS 4.0.1 Compliance

Full visibility of all scripts on payment pages

Real-time alerts on unauthorised changes or third-party risks

Detects Magecart-style and supply chain attacks

Continuous monitoring via real and synthetic user journeys

Easy audit trail for compliance reporting

Requirement 6.4.3 – Script Management

Keeps an up-to-date script inventory

Tracks and alerts on script changes

Helps justify and approve authorised scripts

Requirement 11.6.1 – Tamper Detection

Identifies browser-side tampering in real time

Flags unexpected scripts or host changes

Detects client-side data exfiltration

PCI DSS v4.0.1 6.4.3

PCI DSS 4.0.1 Compliance Support

Online businesses must manage all payment page scripts that are loaded and executed in a customer’s browser.

RapidSpike helps you meet new PCI DSS 4.0.1 standards by maintaining an inventory of scripts, ensuring they are authorised and justified, and implementing measures to verify their integrity.

PCI DSS v4.0.1 11.6.1

Full & Real Visibility of Risk

Organisations must implement mechanisms to detect and alert on unauthorised changes to payment pages and security-impacting HTTP headers.

Businesses need visibility into what is changing on their payment pages and the ability to identify unexpected modifications before they impact customers.

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AI – Enhanced Monitoring

Enhanced Threat Knowledge

See exactly which third-party scripts are running, where you’re exposed, and whether they pose a threat with our AI-enhanced threat database.

What is Web Skimming?

Sometimes referred to as digital skimming or e-skimming, a type of formjacking also known as a Magecart attack, it is becoming a major threat with Mastercard recording over 7,200 infected sites in 2023 and it now accounts for over $1 billion dollars of card theft worldwide.

Find Out More

Simple, Transparent Pricing

No Surprises – Just Clear, Fair Pricing

Our plans are designed to be clear, flexible, and easy to understand — no hidden fees.

Instant setup (just add a snippet)
Cancel anytime during your trial
Only pay after your first full month

Making an impact with our customers.

“We didn’t have dev resources to build custom security. CartShark gave us instant protection without the headache.“
“Fast, affordable, and doesn’t slow down our site. A no-brainer for ecommerce security.”
“We gained full visibility of our ecommerce security in under 5 minutes.”
“No hidden fees, no complex setup, just install and you’re instantly protected.”
“Security usually costs a fortune. CartShark made it affordable and effortless.”

“RapidSpike solves a critical issue for us: providing full visibility of all data sources across each of our websites.”

– Caleb Whittington,
Security Engineer at Kurt Geiger

400,000+

security checks per week

60 seconds

for issues to be flagged

1,000,000+

hosts reviewed

FAQs

RapidSpike delivers enterprise-grade website and cybersecurity monitoring, and has been trusted by global brands for over a decade. In 2018, we pioneered advanced technology to detect “Magecart” web skimming attacks — a breakthrough that earned recognition at both the European and Global Ecommerce Awards. In 2024, we secured the prestigious InnovateUK Smart Grant to accelerate development of this technology, which we have launched in 2025 as CartShark. Today, we monitor over $40 billion in ecommerce transactions annually, providing critical protection for some of the world’s leading online businesses

Yes — all plans come with a 7-day free trial. You can try CartShark Lite or Plus with no upfront charges. You’ll need to enter your card details during sign-up, but you won’t be charged until after your first full month of usage.

Nope. We believe in clear, accessible pricing. You can sign up and get started without a demo — but if you’d like to see CartShark in action first, we’re happy to schedule one. Otherwise, just sign up, install the tracker, and you’re good to go — all in less than 5 minutes.

No — you can cancel at any time during the trial period, and you won’t be billed. If you continue using the platform after the 7-day trial, billing begins once the trial has ended, based on your projected usage for the month.

Our pricing is usage-based, so you only pay for what you use.

We count how many pageviews our tracker records on your website and assign that number to a bucket (e.g., 0–50,000, 50,000–100,000, etc.). Each bucket has a corresponding monthly rate.

If you’re on the Plus plan, there’s also a charge for each active ScriptSentinel monitor, which are powerful synthetic scripts used to actively test your site.

Lite: Tracks your website for webskimming threats and third party resources, using our lightweight visitor-based tracker.
Plus: Includes everything in Lite, plus automated ScriptSentinel monitoring, which simulates user journeys like checkout flows for deeper security insights and a comprehensive view of your third parties and how they impact your customers.

This is for CartShark Plus customers only – it’s an automated browser that simulates real customer checkouts — essential for catching hidden, time-triggered scripts that standard monitoring can miss. It also gives us a deep-dive into the performance of your third parties, so you can see more clearly into your true site experience.

Just copy and paste a small script onto your website — it only takes a minute. The tracker has minimal performance impact and does not collect any personal or demographic data from your site’s visitors.

Absolutely. All payments are processed securely through Stripe, a trusted industry standard for payment processing.

PCI Compliance Support – Made Simple

Your Website Could Be Vulnerable Right Now