Staying Safe on Public Wi-Fi

Author: Joe Newton, Technical Director at Connexis.

When travelling, especially on holiday, it’s tempting to use public Wi-Fi in hotels, cafes, or airports to stay connected without using up mobile data. While public networks make it easy to check emails, share photos, or plan your day, they can also pose serious risks if you’re not careful. 

During my recent holiday, I was reminded of just how essential it is to approach these networks with caution. Here’s a straightforward guide to staying secure on public Wi-Fi.

1. Be wary of network names

When you first see a network named something generic like “Guest” or “Free Wi-Fi,” it might seem fine. However, these simple names are easy to replicate, making them vulnerable to “Rogue Access Points.” This means someone could set up a fake network that looks like the real thing to lure users into connecting, only to intercept their data.

To avoid this, always check with the business providing the Wi-Fi to confirm the correct network name. If there are multiple networks listed, ask a staff member which one is official to reduce the risk of connecting to a rogue network.

2. No password, no encryption

It’s common for public Wi-Fi networks not to have a password. While this makes connecting easier, it also means the network likely lacks the security of WPA2 or WPA3 encryption. Without encryption, data transmitted over the network is vulnerable, as it’s sent via radio waves that can be intercepted.

Think of it like posting a letter without an envelope – anyone along the way can read it. To keep your data secure, always use a VPN on open Wi-Fi networks.

3. Protect your data with a VPN

A VPN (Virtual Private Network) encrypts your internet traffic by creating a secure “tunnel” between your device and the VPN provider’s server. This is particularly useful on public Wi-Fi, as it prevents anyone from intercepting your data. While VPNs are often used by businesses to enable remote access, commercial VPN services are available for anyone who wants to secure their browsing on public networks.

If you don’t have access to a business VPN, there are free options, like Microsoft Defender (often with a data limit), or you could subscribe to services such as NordVPN for more robust protection. Using a VPN is one of the easiest ways to add a layer of security and privacy to your connection.

Offering safe Wi-Fi for your customers

If your business offers public Wi-Fi, its crucial to make it secure. Public Wi-Fi is a valued amenity, but protecting your customersrs data and ensuring the network is secure should be a top priority. Connexis can help enhance your security measures, making sure you're providing a reliable and safe Wi-Fi experience.

Get in touch with Connexis today on 01952 528000 or by emailing sales@connexis.co.uk to explore how you can protect your customers while keeping them connected.