Ethernet vs Wi-Fi security: Which internet connection is actually safer?

We spend so much time online that how we connect to the internet has become almost as important as the devices we use. Most people never give it a second thought. They connect their computer to Wi-Fi, type in a password and get on with their day. But if you have ever wondered whether plugging in an Ethernet cable is safer than sticking to wireless, you are asking the right question. The way you connect can have real consequences for your privacy and security. Recently, Kathleen reached out to me with the same doubt.

“Is it more secure to use the Ethernet connection at home for my computer, or is it safer to use the Wi-Fi from my cable provider?”

It’s a great question, Kathleen, because both options seem similar on the surface but work very differently under the hood. Those differences can mean the difference between a private, secure connection and one that’s more vulnerable to attackers.

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How Ethernet and Wi-Fi differ when it comes to security

Ethernet and Wi-Fi both get you online, but they do it in completely different ways. Ethernet uses a physical cable that connects your computer directly to the router. Since it is a wired connection, data travels straight through that cable, making it much harder for anyone to intercept it. There is no wireless signal to hijack, no airwaves to eavesdrop on.

Wi-Fi, on the other hand, is built on convenience. It sends your data through the air to and from your router, which is what makes it so easy to connect from anywhere in your home. But that convenience comes with more risk. Anyone within range of your signal could potentially try to break into the network. If your Wi-Fi is protected by a weak password or uses outdated encryption, a skilled attacker might gain access without ever stepping inside your house. 

At home, that risk is smaller than in a coffee shop or hotel, but it is not zero. Even a poorly secured smart device on your network can give attackers a way in. Ethernet removes many of those risks simply because it is harder to access a connection that requires physical access to a cable. Check out our steps for setting up a home network like a pro here.

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Why one connection might be safer than the other

It is easy to think Ethernet is automatically safer, but that is not the whole story. Your real security depends on how your entire network is set up. For example, a Wi-Fi network with a strong password, up-to-date router firmware, and WPA3 encryption is going to be far more secure than a poorly configured Ethernet setup connected to an outdated router.

There is also the question of who else uses your network. If it is just you and a handful of devices, your risk is low. But if you live in a shared space or run smart home gadgets, that changes the equation. Each device connected to Wi-Fi is a potential entry point. Ethernet reduces the number of devices that can connect, which limits the attack surface.

Ultimately, the connection type is one piece of the puzzle. The bigger factors are how your router is configured, how often you update your software, and how careful you are with what devices you connect.

Wi-Fi brings convenience but also potential exposure to hackers.  (Kurt “CyberGuy” Knutsson)

6 ways to make your internet safer

Whether you stick with Wi-Fi or switch to Ethernet, there are several practical steps you can take to protect your devices and data. Each step adds an extra layer of security to your network.

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1) Use a strong network password

Choose a long and unique password for your Wi-Fi. Avoid obvious choices like your name, address, or simple sequences. A strong password makes it far harder for attackers to guess or crack your network. A password manager helps you create and store strong, unique passwords for every account, reducing the chances of a hacker gaining access through weak or repeated credentials.

Next, see if your email has been exposed in past breaches. Our #1 password manager (see Cyberguy.com/Passwords) pick includes a built-in breach scanner that checks whether your email address or passwords have appeared in known leaks. If you discover a match, immediately change any reused passwords and secure those accounts with new, unique credentials. 

Check out the best expert-reviewed password managers of 2025 at Cyberguy.com/Passwords

2) Enable the latest encryption on your router

Most modern routers support WPA3, which is much more secure than older standards like WPA2. Check your router’s settings to enable the latest encryption and ensure your network traffic is harder to intercept.

3) Keep your router firmware updated

Router manufacturers regularly release updates that patch security vulnerabilities. Log into your router’s admin panel occasionally to check for updates and install them as soon as they are available. This prevents attackers from exploiting known flaws. 

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4) Review connected devices

Regularly check which devices are connected to your network and disconnect anything you no longer use. Each connected device is a potential entry point for attackers, so keeping the list limited reduces your network’s exposure.

5) Install strong antivirus software

Even on a secure network, malware can sneak in through downloads, phishing attacks, or compromised websites. A strong antivirus program will detect and block malicious activity, protecting your computer before damage occurs.

The best way to safeguard yourself from malicious links that install malware, potentially accessing your private information, is to have strong antivirus software installed on all your devices. This protection can also alert you to phishing emails and ransomware scams, keeping your personal information and digital assets safe.

Get my picks for the best 2025 antivirus protection winners for your Windows, Mac, Android & iOS devices at Cyberguy.com/LockUpYourTech 

Ethernet cables connect to a router as part of a home network setup. (Kurt “CyberGuy” Knutsson)

6) Use a VPN for sensitive tasks

A virtual private network encrypts your internet traffic, making it unreadable to outsiders. This is especially useful if you ever use Wi-Fi in public or need an extra layer of privacy at home. A reliable VPN is essential for protecting your online privacy and ensuring a secure, high-speed connection.

For the best VPN software, see my expert review of the best VPNs for browsing the web privately on your Windows, Mac, Android & iOS devices at Cyberguy.com/VPN

Kurt’s key takeaway

So, which is safer, Ethernet or Wi-Fi? Ethernet wins in raw security because it eliminates many of the risks that come with wireless connections. But in a well-secured home network, the difference is often smaller than most people think. What matters more is how you manage your devices, passwords, software, and online habits.

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Would you trade the flexibility of wireless for the peace of mind of a wired connection? Let us know by writing to us at Cyberguy.com/Contact

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