Cloudflare WAF & Bot Protection for a UK Medical eCommerce Store

What this case study is based on

Detailed project case study supplied for publication. Only what the project record actually shows is stated here. Where no measurable outcome was recorded, none is claimed.

The security problem

• Malicious automated traffic was repeatedly hitting the store.
• Server resources and site performance were being affected by unwanted requests.
• Analytics were being distorted by non-human traffic.
• The store needed protection without disrupting genuine product browsing and checkout.

Technical approach

The specific controls follow from the site's architecture and its observed traffic, never from a template. The workflow below is the reasoning behind the work, described at the level the project record supports.

1. Reviewed Cloudflare traffic and firewall events before changing controls.
2. Configured Cloudflare managed WAF rules for common application attacks.
3. Added custom firewall rules around the observed bot patterns.
4. Applied targeted rate limiting to sensitive store journeys.
5. Validated product browsing and checkout from a real-customer perspective.

Result and client evidence

• The supplied case study reports a significant reduction in malicious bot traffic.
• Server performance improved as unwanted requests were filtered at the Cloudflare edge.
• Analytics became more representative of real visitors.
• Product and checkout paths remained available to legitimate customers.
• The client left a five-star review and indicated an intention to continue working together.

On a store, a false positive costs more than the attack

Checkout, payment callbacks, login and API paths are where security rules do the most damage when they are wrong. A rule that blocks card testing and also blocks two percent of real checkouts is not a win, and it usually surfaces through a support ticket rather than a dashboard.

So changes to an ecommerce stack get tested against the real purchase flow, the integrations and the automation before enforcement, and challenges are preferred over hard blocks anywhere a mistake is expensive. WAF setup and bot protection both follow that rule.