PCI DSS applies to any business that takes card payments. The good news for most retailers and restaurants: you can dramatically shrink what you're responsible for by keeping card data out of your systems entirely.
The practical priorities
- Use validated, point-to-point encrypted (P2PE) payment terminals.
- Segment your payment network from guest Wi-Fi and back-office PCs.
- Change default passwords on every device, especially the router and POS.
- Keep POS software patched and supported.
- Restrict who can access payment systems.
Why segmentation matters
If your card terminals share a flat network with the office laptop and the public Wi-Fi, everything is "in scope" — and one infected device can put card data at risk. Separating payments onto their own segment is the single highest-impact step.
Staying compliant year-round
PCI isn't a once-a-year form. Quarterly scans, patching, and access reviews keep you compliant and, more importantly, keep customer card data safe.
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