You're storing customer credit card data. That makes you a target. Here's how to protect your business without becoming a security expert.
The Basics Everyone Should Do
Unique Passwords
Every employee gets their own login. No shared "manager" passwords. When someone leaves, deactivate immediately.
Secure WiFi
Your POS network should be separate from guest WiFi. Strong password, WPA3 if possible, hidden SSID.
Software Updates
Keep your POS software current. Updates often include security patches for known vulnerabilities.
Physical Security
Lock your back office. Don't leave terminals accessible after hours. Cameras on POS stations.
PCI Compliance: The Short Version
PCI DSS (Payment Card Industry Data Security Standard) is required if you accept credit cards. Most bars and restaurants qualify for simplified self-assessment (SAQ).
Key PCI Requirements
- - Don't store full card numbers (your POS shouldn't anyway)
- - Encrypt card data in transit
- - Use strong access controls
- - Maintain a firewall
- - Complete annual self-assessment questionnaire
Red Flags to Watch
- Skimmers - Regularly inspect card readers for added devices
- Phishing emails - Your POS company will never ask for passwords via email
- Unknown devices on network - Know what's connected to your network
- Unusual transaction patterns - Sudden spikes in refunds or voids
- Remote access requests - Verify any "support" calls before giving access
If You Get Breached
- 1. Disconnect affected systems from network immediately
- 2. Contact your payment processor
- 3. Document everything
- 4. Don't try to "fix it yourself" - get professional help
- 5. Notify affected customers as required by law
Questions About POS Security?
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