Summary: Reduce fraud and chargebacks with disciplined processes and clear records. Security is a workflow, not a plugin.
Core principles
Minimize data exposure: Collect only what is required to fulfill the order.
Use PCI-compliant gateways: Never handle raw card data yourself.
Keep an audit trail: Store invoices, chat transcripts, shipment proofs.
Segregate duties: The person issuing refunds should not reconcile payouts.
For buyers
- Verify the seller profile: Ratings, history, and completed orders.
- Use platform messaging only: No off-platform emails or links.
- Pay through the official checkout: It’s the only place with buyer protection.
- Check return and warranty terms before paying.
- Inspect on delivery: Record unboxing for high-value items.
For sellers
- KYC on high-risk orders: Mismatched name, rush shipping, or unusual quantities.
- Address verification and 3-D Secure where available.
- Ship with tracking and signature for orders above your threshold.
- Clear policies: Delivery windows, returns, after-sales contact.
- Chargeback kit ready: Invoice, messages, tracking, photos, usage logs.
Handling disputes
Respond within the platform deadlines.
Be factual and concise.
Offer a pragmatic resolution first; escalate with documentation if refused.
Data hygiene
Rotate admin passwords quarterly.
Limit staff permissions to the minimum needed.
Export order logs monthly and store encrypted backups.
Red flags
New buyer + overnight shipping + high ticket.
Multiple cards declined, then one approved.
Requests to ship to freight forwarders without history.
Takeaway: Security improves when you standardize steps and remove exceptions. Document once, apply every time.