How to Tell If Your Wi-Fi Network Has Been Hijacked

Have you ever worried that your home Wi-Fi network might not be as secure as you think? It's a common concern, and thankfully, there are clear signs you can look for to see if someone has tampered with your router or "hijacked" your Wi-Fi.

Slow Internet Speeds and Disconnections

One of the most immediate and noticeable signs of Wi-Fi hijacking is a sudden and unexplained drop in your internet speed. If your streaming services are constantly buffering, downloads are taking forever, or your online games are lagging, it could be a sign that someone else is using your bandwidth without your permission. This is especially true if you haven't changed your internet plan or added new devices.

• Check your internet speed using an online speed test tool (e.g., speedtest.net). Run tests at different times of the day.
• Observe if the slowdowns happen consistently or at specific times, which might hint at when others are using your connection.
• Note if your devices frequently disconnect from the Wi-Fi network for no apparent reason.

Unrecognised Devices on Your Network

Most modern routers allow you to see a list of all devices currently connected to your Wi-Fi network. If you spot devices you don't recognise – a mystery smartphone, an unfamiliar laptop, or a device with a strange name – it's a huge red flag. This feature is your first line of defence in spotting uninvited guests.

• Access your router's administration page (usually by typing an IP address like 192.168.1.1 or 192.168.0.1 into your web browser).
• Look for a section often labelled 'Connected Devices', 'Device List', or 'DHCP Clients'.
• Compare the list against all your own devices (phones, tablets, computers, smart TVs, gaming consoles, smart home gadgets).

Changes to Your Router Settings

A hijacker might try to change your router's settings to maintain access or redirect your internet traffic. This could include changing your Wi-Fi password, the network name (SSID), or even more advanced settings like DNS servers. If you find settings have been altered without your knowledge, it's a strong indicator of compromise.

• Log into your router's administration page.
• Check for any unfamiliar changes to your Wi-Fi name (SSID) or password.
• Review the 'DNS Settings' – if they're not set to 'automatic' or your internet provider's known DNS, this could be suspicious.

New and Unknown Wi-Fi Networks

Sometimes, a hijacker might create a new, open Wi-Fi network directly from your router without your permission. This 'rogue' access point might have a similar name to yours or be completely new. The goal is to trick others (or even you) into connecting to their compromised network.

• On your phone or computer, check the list of available Wi-Fi networks.
• Look for any new networks that you didn't create, especially if they have weak security (e.g., no password).
• Be cautious of networks with names very similar to your own, as these could be 'evil twin' networks.

Unusual Redirects or Pop-ups

In some malicious attacks, a hijacked router might redirect your web browser to unexpected or suspicious websites, even when you type in a legitimate address. You might also notice an increase in pop-up ads, even on websites that normally don't have them. This can be a sign that your internet traffic is being funnelled through a malicious server.

• Pay attention if you're suddenly redirected to a different website than the one you intended to visit.
• Note any unusual or excessive pop-up windows appearing, especially on trusted websites.
• Be wary of warnings or alerts that don't seem to come from your computer's security software.

Key takeaway

Spotting the signs of a hijacked Wi-Fi network is the first crucial step in protecting your digital life. Pay attention to these indicators, and if you find any, you can then take steps to secure your network and keep uninvited guests out. Stay vigilant and keep your home network safe!