How the Caravan and Motorhome Club Gained Continuous Oversight of Its Third-Party Scripts

A 150-site membership organization, a tag estate that changes every week, and a browser layer traditional testing does not cover.

Guiding Travelers Since 1907

The Caravan and Motorhome Club is one of the UK’s largest and oldest membership organizations. It operates around 150 sites across the UK and provides insurance, overseas travel services, and holiday planning to hundreds of thousands of members. Motorhomes are what US travelers would call RVs.

Most member interaction happens online. That makes the member’s browser a critical focus area, and it puts every third-party script on the club’s pages inside the security perimeter that matters.

The Challenge: Traditional Testing Gives You a Snapshot

Penetration testing covered CAMC’s server-side and web application assets well. Third-party browser execution was a different problem, because the estate does not hold still. Marketing teams update tracking tags continuously to support member engagement, and each change alters what runs in the browser.

"Traditional testing gives you a snapshot in time, but client-side environments change constantly. We needed continuous insight into third-party dependencies without imposing operational friction on our infrastructure."

A quarterly test tells you what was executing in one moment. It cannot tell you what a tag did the following Tuesday.

Why Reflectiz

CAMC selected Reflectiz on two criteria: comprehensive risk mapping and effortless deployment.

"Third-party supply chains are a major focus for modern security teams. Understanding where client-side connections route, down to fourth- and fifth-party vendors, is critical for modern posture management."

The agentless architecture was the second factor. Reflectiz monitors from the outside in. Nothing is installed on the club’s servers or load balancers, no code is added to its pages, and the platform has no access to payment or session data. Member workflows are untouched, and no latency is introduced.

The Solution: Automated, Continuous Assurance

Scans run automatically on a regular schedule rather than on request, so the security team receives reliable updates without initiating anything.

When legacy components were identified during initial scans, the team applied a simple workflow: identify the tag, review it with marketing, remediate, and verify on the following scan.

"Having automated verification complete every week gives us immediate proof that a remediation action held. It replaces assumptions with definitive evidence."

That closing step is the part periodic testing cannot supply. Remediation without verification is an assumption.

Deep Supply Chain Visibility

Mapping the club’s client-side supply chain revealed the true depth of modern web dependencies, surfacing vendor chains six parties deep that traditional controls could not detect.

Reflectiz’s risk-scoring framework lets CAMC direct attention where it matters most, reviewing lower-ranked components systematically against internal standards rather than working through undifferentiated alerts.

Strengthening Marketing and Security Collaboration

Rather than creating operational friction, the platform gave security and marketing a common operating picture. Marketing was granted access to scan insights, which made tag management a shared priority instead of a point of negotiation.

Three practices came out of it:

• Formalized approvals. Google Tag Manager access now operates under a structured request-and-review protocol.
• Trial auditing. Short-term promotional tags appear in each weekly scan and are reviewed and removed when campaigns conclude.
• Proactive alignment. Marketing consults security ahead of planned changes to review expected script behavior.

"Marketing gains clear visibility into their tag estate, and security gets the assurance it needs. It converted a potential bottleneck into a proactive partnership."

Supporting Compliance Frameworks

The platform supports CAMC’s regulatory requirements, in particular the PCI DSS obligations that apply to payment page monitoring:

• PCI DSS 6.4.3: maintain an inventory of every script on payment pages, with authorization and integrity assurance for each one
• PCI DSS 11.6.1: detect and alert on unauthorized changes to payment page HTTP headers and content

By auditing script activity on transaction pages, CAMC maintains automated evidence that only authorized payment scripts execute during checkout. The same monitoring supports proactive consent management checks across the wider estate.

The Bottom Line

For CAMC, Reflectiz brought simplicity and clarity to client-side governance.

"It gives us full confidence in our browser layer without adding operational complexity. Every organization using third-party scripting should ask themselves: do you truly know what is running in your customer's browser right now?"

What This Means for Your Web Estate

• Penetration testing does not cover what executes in your customer’s browser. Client-side visibility is a separate discipline.
• Tag estates change faster than testing cycles. Oversight has to be continuous to stay accurate.
• Verification matters as much as detection. A fix you cannot confirm is an assumption.
• Client-side dependency chains routinely run several parties deeper than your vendor list suggests.
• Agentless monitoring keeps latency, infrastructure risk, and deployment effort out of the decision.
• Giving marketing visibility into its own tags turns governance into a shared objective.

Do you know what is executing on your payment and checkout pages right now? Reflectiz maps your full client-side dependency chain with no code deployed on your site.