The threats of doing business on public Wi-Fi

Public Wi-Fi can be incredibly helpful when you need to send an urgent email while out of the office. However, it can also expose your business data to significant risks.

Public Wi-Fi is everywhere these days – found in cafés, airports, hotels, and on trains. It’s incredibly convenient, especially for business travellers or anyone working remotely.

However, did you know that connecting to free Wi-Fi could expose your business data to cybercriminals? This is the reality of using unsecured public networks.

When you connect to public Wi-Fi, you open the door to scammers who are skilled at exploiting these networks. The two biggest threats to be aware of are Man-in-the-Middle (MITM) attacks and Evil Twin attacks.

Although they sound like something from a spy movie, these attacks are very real and can have serious consequences for your business.

What is a Man-in-the-Middle (MITM) attack?

Imagine you’re sitting in a café, sending an email or logging into your business bank account. You believe your device is communicating directly with the Wi-Fi network, but in reality, a cybercriminal has positioned themselves between you and the network.

This “man in the middle” can see everything you’re doing—your passwords, your emails, even your credit card details. The worst part? You might not even realize it’s happening.

Criminals can exploit this stolen information in various ways. They may sell it to advertisers, use it to impersonate you in phishing scams (where they deceive people into providing sensitive information, such as passwords or credit card details), or even steal money from your accounts. For businesses, this could result in sensitive financial information or customer data falling into the wrong hands.

What is a Evil Twin Attack?

Imagine you’re at an airport and see two Wi-Fi networks: one called “Airport Free Wi-Fi” and another named “Airport Wi-Fi Secure.” Both sound legitimate, but one could be a fake network set up by cybercriminals.

When you connect to the fake network, scammers can monitor your online activities, similar to a Man-in-the-Middle (MITM) attack, but they can do even more. They can steal your cookies—small pieces of data that websites use to remember you—and gain access to your login details or personal information.

In some cases, they can even install malware (malicious software) on your device without you having to click anything. It’s concerning, isn’t it? All it takes is connecting to the wrong Wi-Fi network, and your data—and your business’s security—could be compromised.

So what can you do?

Using public Wi-Fi doesn’t have to be a security nightmare, but it does require caution. Here are some steps to help keep your business protected:

  • Avoid accessing sensitive information – while connected to public Wi-Fi. This includes anything related to passwords, personal data, or financial accounts. If you wouldn’t want a stranger looking over your shoulder, it’s best to wait until you are on a secure network.

  • Stick to websites that use HTTPS – which encrypts your data. You can identify a secure site by looking for a padlock icon in the address bar or “https://” at the beginning of the web address. Most websites today use this protocol.

  • Consider using trusted browser extensions – designed to enhance your online safety. Many extensions can block cookies, ads, and even malicious websites, which reduces the risk of exposing your information.

  • Turn off auto-join on your business devices – this will prevent your work phone, tablet, or laptop from automatically connecting to any available network, including potentially dangerous ones.

  • Be wary of suspicious pop-ups – scammers often use these to trick you into clicking on something harmful. If a pop-up seems off, don’t interact with it; just close the window.

  • Enable two-factor authentication (2FA) – on your business accounts whenever possible. This security feature requires a second form of identification (like a code sent to your phone) to log in, making it more difficult for anyone to access your account, even if they obtain your password.

  • Keep your software up to date – updates often include security patches that protect your device from the latest threats. Ignoring these updates could leave your business devices vulnerable.

By following these steps, you can better secure your business while using public Wi-Fi.

If you need assistance in safeguarding your business data, no matter your location, feel free to get in touch.