How secure is a mobile hotspot?

When there’s no Wi-Fi in sight when you’re in public or traveling and you need to connect your Wi-Fi-only device, like a laptop, tablet, or handheld gaming console, you can simply whip out your smartphone and create a mobile hotspot. As long as it has access to 4G or 5G internet connectivity, your other devices can connect to it like a router. But before you do that, you need to know how secure mobile hotspots generally are. While there are risks, the overall answer is that mobile hotspots are generally secure.

A mobile hotspot is certainly much more secure than connecting to a public Wi-Fi network, which can expose your data and device to all kinds of bad actors and other dangers. You just need to make sure it’s protected by a strong Wi-Fi password, that you have an updated device, and that you use a reputable VPN service to protect connected devices that might otherwise be vulnerable to hackers. Additionally, good general internet browsing habits will go a long way in ensuring that your mobile hotspot doesn’t get hacked.

Unlike public Wi-Fi you find at an internet cafe, airport, or hotel, you control which devices can connect to a mobile hotspot. iPhones are even more secure than Android devices because a password is required to set up and use a hotspot; just be sure to come up with a strong, memorable password that hackers can’t easily guess. On Android, you can disable the password, which can speed up the login process, especially if you want your family and friends to log in easily. However, this is not recommended because you have now lost control of who can connect to the mobile hotspot. Hackers could also break in quite easily, and once that happens, they can cause all sorts of damage, including draining your data plan, adding your phone to a botnet, or using the hotspot as a way to access other devices connected to it.

Modern hotspots also use a security protocol called Wi-Fi Protected Access (WPA). It encrypts data and strengthens authentication methods to ensure the security of all devices. Most modern mobile hotspots use the WPA2 or WPA3 protocol. WPA3 provides the mobile hotspot with stronger encryption for your personal data and also has measures to ward off brute force attacks. This is important because devices connected to the hotspot transmit a lot of data between themselves and the hotspot, including passwords and other personal data.

Since mobile hotspots can be a security breach, you need to adjust your habits to ensure they stay secure. For example, keeping your mobile hotspot on all the time is a big mistake. Fortunately, most phones automatically turn off their mobile hotspots due to inactivity. It’s simply safer to do it yourself to be absolutely sure you don’t detect any unintended connections. Also be sure to apply updates to your phone when the manufacturer makes them available. This ensures that the phone has the latest security improvements and patches that remove vulnerabilities that hackers can exploit. If your phone has reached its End of Life (EOL) status, this means there are no more updates from the manufacturer. At this critical point, you need to upgrade to a new phone.

Even when you’re careful with your mobile hotspot, things can go wrong and you may still need a little extra help. A virtual private network, or VPN, can be your friend in this regard as it helps protect your internet traffic by encrypting it and sending it through a secure tunnel. A VPN server will receive the data, decrypt the data packed in the VPN, and then send it to the final destination. This helps prevent people monitoring the local network from reading your traffic content. Additionally, a VPN hides the contents of your traffic from your ISP, giving you a privacy advantage (although the VPN provider can see your online activity).