Wi-Fi Security 101 for coffee shop owners

You don't need to become a network engineer to run safe Wi-Fi. But there are a few risks worth understanding, because they're real and they trace back to you.

The open-network problem

If your Wi-Fi is wide open, anyone within range can join it. That includes the customer working quietly in the corner, and it includes someone using your connection to do something illegal. When that happens, the IP address it traces back to is yours. Not theirs. You become the address on the paperwork.

The shared-network problem

Plenty of shops run their guest Wi-Fi on the same flat network as their point-of-sale system, their cameras, and the laptop in the back office. That means a guest device and your business systems are neighbors. A compromised phone on your guest network is a phone sitting next to the machine that processes credit cards.

What actually protects you

The good news is that the fixes are well understood:

• Separate the networks. Guests go on their own network, isolated from anything that runs your business.
• Put a sign-in screen in front of it. A captive portal means guests accept your terms before they connect, and you have a record of who connected and when.
• Keep connection logs. If you're ever asked, you have an answer instead of a shrug.
• Set sensible limits. Speed, data, and session caps keep one bad actor (or one Netflix marathon) from taking the whole room down.

This is exactly the kind of protection big companies pay a fortune for. There's no reason a coffee shop shouldn't have it too. That's the whole idea behind Barista WiFi: serious network protection, set up for you, included in one fair price.