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Public wi-fi hotspots are undeniably convenient when your mobile network lets you down, but it’s worth taking a few precautions and running some checks before you connect.
For one, you'll need to be wary of nosy onlookers peering at your screen if you're in a bustling café. But aside from subtly shielding your display, there are plenty of other ways to keep your information private.
Here, we've rounded up security tips for phone and laptop users who regularly rely on public wi-fi. Precise steps on Android devices will vary depending on which brand of phone you're using. If you're unsure, check your manufacturer's website.
The purpose of this article isn't to discourage you from connecting to public wi-fi entirely, but instead to highlight what you need to be aware of when connecting to an unsecured network.
At a glance: Not all public wi-fi hotspots are equal – some are safe, while others might be designed to trick you into connecting and handing over information without realising.
In theory, a seemingly safe wi-fi hotspot could be used by a hacker to track what you're doing on your phone or laptop. They might label the network in a way that makes you think it's innocent – 'Coffee_wifi_official', for example.
With this in mind, you should consider the legitimacy of any public wi-fi network before you connect. If you're using a hotspot provided by a restaurant or hotel, check in with a staff member (or permanent signage) to confirm the hotspot details.
Typically, an unsecured (and potentially dangerous) network will give you internet access without you having to enter a password. Meanwhile, secured alternatives will often ask you to register an account and agree to terms and conditions. Several UK mobile networks, for example, provide free wi-fi across the UK.
If you have a spare couple of minutes, you might want to create a brand new email address that becomes your go-to when signing up to public wi-fi hotspots. That way, spam messages will be sent to that address instead of your main one (see also: How to block spam emails for good).
At a glance: Websites that use HTTPS provide improved security compared to those that don't.
Try to get into the habit of only accessing websites that use HTTPS (Hypertext Transfer Protocol Secure). This means data transmitted from your device to the website is encrypted, adding an extra layer of security. Websites designed to steal your data will often (but not always) use HTTP instead of HTTPS.
To confirm if a website is using HTTPS, check the start of the URL in your browser – it will appear before the 'www.'
Crucially, HTTPS doesn't guarantee that a website is 100% secure. It is, however, a good indication of trustworthiness.
At a glance: Keeping your gadgets updated will protect them against weaknesses hackers can take advantage of.
Before you connect to a public wi-fi hotspot, ensure your device is running the latest security software.
The process of checking which software build you're running only takes a couple of seconds. If you find that you need to download a chunky update, you might prefer to do that at home over your own wi-fi so you don't eat through your mobile data allowance.
If you're debating a phone upgrade, make sure you pick a model that's backed by regular security updates. Our guide to mobile phone security includes a free phone support calculator.
At a glance: Stop your device from automatically connecting to potentially unsafe networks without your knowledge.
By default, some devices will automatically connect to a network you've used previously – but that’s risky if the network turns out to be unsafe. Check your current settings by following these steps:
Of course, you can go a step beyond disabling auto-connect and instead delete a wi-fi network from your device entirely – we've got the details below.
At a glance: Avoid unintentionally connecting to a problematic wi-fi hotspot by removing it from your device's network list.
You can delete the details of potentially dangerous or unsecured wi-fi hotspots from your device in just a couple of taps or clicks. Simply follow these steps to remove saved connections:
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At a glance: This makes your online accounts more secure by requiring a second form of verification – a pain for hackers who might have gathered details from an unsecured wi-fi hotspot or a wider data leak.
Take a moment to activate 2FA for your online accounts. Doing so means that, when you attempt to access an account from a new device, the associated website or app will send a code to your phone. You then have to enter the code before you can continue using the service.
To enable it, open the app you're looking to secure (Gmail or Outlook, for example) and search through the account security settings. Typically, you’ll be asked to enter your mobile number, and then the service will send you a code.
See also: 10 things every smartphone owner should do to keep their data safe.
At a glance: Strengthen your defences against unsecured wi-fi networks.
With one of our recommended antivirus software packages on your side, you're protected against phishing scams designed to steal your data.
When going hands-on with antivirus for PC and Mac, we use around 10,000 samples of unique malware to test each antivirus package. Our experts also check antivirus programs to ensure they don’t let you pass on infected files to other people, even if the files haven’t been opened by you first.
Upgrade your security by exploring our guide to the best antivirus software.
At a glance: VPNs are used to keep some parts of your online activity private. Simply put, they make it harder for hackers to intercept and read your data. They are not for everyone, though.
A VPN (virtual private network) creates a secure tunnel of internet connection between your device and the web. Data and information sent and received via an active VPN is encrypted and converted into unintelligible code, largely preventing third-party websites, your internet service provider (ISP) and any potential eavesdroppers (such as hackers) from reading key information.
By obscuring this information, you become much more anonymous online and more difficult to identify. It’s not a one-stop shop to creating online anonymity, but it does reduce your online footprint. This can help keep intrusive companies from collecting your data, while also acting as a potential further line of defence against hackers.
We've tested VPNs from Nord, Proton, Express and more, to see which will help to protect you from poorly secured networks and opportunistic hackers. See our guide to the best VPNs.
In some cases, you might find it easier to rely on your mobile network to give you internet access on the move.
But if you decide to create a mobile hotspot on your phone and connect from your laptop, be wary of your data allowance – you don't want a shockingly high bill on your doorstep at the end of the month. Check your mobile network's app or website to see how much data you have remaining.
To create a wi-fi hotspot on your phone that you can use from a second device, do this:
When creating a hotspot, note that you can change the default name if you don't want it to include any identifying details. You also need to pick a security tier that includes a password so only you can gain access. Monitor your battery drain, too.
Going on holiday? Find out how to prepare your phone for holidays abroad so you won't get stung by unexpected costs.
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