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Cydefen
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E-commerce & retail

Security that survives Black Friday

Payment fraud, Magecart skimmers, bot attacks, peak-season traffic — we build a program that protects revenue on the worst day of the year.

Who is it for?

  • D2C online retailers
  • Marketplaces
  • B2B wholesale platforms
  • Quick commerce and delivery
  • Loyalty and gift-card operators
What we deliver

Outcomes for online retail

PCI DSS alignment

Full-scope PCI DSS 4.0 support — gap analysis, SAQ / ROC preparation, QSA coordination.

Checkout fraud defence

Rate limiting, device fingerprinting, behavioural checks, 3DS tuning. We reduce chargebacks without killing conversion.

Magecart protection

CSP, SRI, client-side protection, third-party script monitoring — we stop the skimmer before your customers see it.

Peak-season readiness

Pre-Black-Friday tabletop, load and WAF tuning, incident response drill with marketing and ops in the room.

Customer data protection

GDPR-aligned data minimisation, retention policies, breach response playbook.

Marketplace seller risk

Seller onboarding due diligence, account takeover defence, refund-fraud detection.

How we engage

From diagnosis to peak-season readiness

  1. 01

    Diagnosis

    Fraud baseline, WAF / CDN review, payment stack audit, third-party script inventory.

  2. 02

    Quick wins

    First 30 days: CSP / SRI rollout, WAF tuning, MFA everywhere, basic bot defence.

  3. 03

    Program

    PCI DSS alignment, training for ops and CX, pentests, fraud-detection tuning.

  4. 04

    Peak-season drill

    Tabletop exercise before Black Friday — ransomware, payment outage, Magecart, DDoS. Marketing in the room.

FAQ

Frequently asked questions

We use Shopify / BigCommerce — do we even need this?
Yes. The platform covers infrastructure, but the integrations, apps, payment stack and third-party scripts are your responsibility. That is usually where breaches start.
Can you coordinate with our QSA?
Yes. We work alongside QSAs and prepare the evidence pack they need.
How do you avoid slowing down the checkout?
Every fraud control is tuned against your conversion funnel. We measure and report conversion impact per control.
Do you help with marketplace seller fraud?
Yes. Onboarding due diligence, account takeover defence and refund-fraud detection are part of the program.
How is it billed?
Fixed-price per project plus an optional retainer for peak-season readiness and ongoing monitoring.

Start with a pre-peak security diagnosis

30-minute call — we scope the gaps and propose a 30/60/90-day plan.

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