Is Your Smart Home Vulnerable to a Hack Attack? | McAfee Blog

Your smart home hums right along. It sets your alarm, opens your garage door, pops up recipes on your refrigerator screen, turns up your lighting, and even spins selections as your in-house DJ. That’s to name just a few of the things it can do. Yet with all these connected conveniences, can smart homes get hacked?

The short answer is, unfortunately, yes. Yet you have plenty of ways you can prevent it from happening.

Why do hackers target smart homes?

Smart homes and the Internet of Things (IoT) devices that populate them often offer prime targets for hackers. The reason? Many IoT smart home devices have poor security features in place. And because a home network is only as strong as its weakest point, smart home devices offer a ready means of entry. With that access to the network, a hacker has access to all the other devices on it…computers, tablets, smartphones, baby monitors, and alarm systems. Everything.

Recent research sheds light on what’s at stake. Cybersecurity teams at the Florida Institute of Technology found that companion apps for several big brand smart devices had security flaws. Of the 20 apps linked to connected doorbells, locks, security systems, televisions, and cameras they studied, 16 had “critical cryptographic flaws” that might allow attackers to intercept and modify their traffic. These flaws might lead to the theft of login credentials and spying, the compromise of the connected device, or the compromise of other devices and data on the network.[i]

Over the years, our research teams at McAfee Labs have uncovered similar security vulnerabilities in other IoT devices like smart coffee makers and smart wall plugs.

Let’s imagine a smart lightbulb with poor security measures. As part of your home network, a motivated hacker might target it, compromise it, and gain access to the other devices on your network. In that way, a lightbulb might lead to your laptop — and all the files and data on it.

In all, hackers have many reasons why they might break into your smart home.

How you can protect your smart home devices

You can take several steps to make your current smart home safer. Some of them involve protecting your devices, while others focus on protecting your home network.

1. Update your devices. Some manufacturers keep devices current better than others, yet always check for updates. They often include security fixes and other measures to keep hackers out.
2. Use strong, unique passwords. Every device of yours should have one, along with a unique username. In some cases, connected devices ship with default usernames and passwords, making them that much easier to hack.[ii]
3. Use multi-factor authentication. Our banks, medical providers, and numerous other services use multi-factor authentication to keep hackers from hijacking accounts. If your smart home device supports two-factor authentication as part of the login procedure, put it to use and get that extra layer of security.
4. Secure your internet router. Your router acts as the internet’s gateway into your home. From there, it works as a hub that connects all your devices — computers, tablets, and phones, plus your IoT devices as well. That means it’s vital to keep your router secure. The first thing to do is change the default password of your router if you haven’t done so already. Again, use a strong method of password creation. Also, change the name of your router. When you choose a new one, go with a name that doesn’t give away your address or identity. Something unique and even fun like “Pizza Lovers” or “The Internet Warehouse” are options that mask your identity and are memorable for you too.
5. Keep your router current. Routers need updates too. Many internet service providers (ISPs) automatically push firmware updates to the routers they rent or sell to their customers. Check with yours to see. Likewise, router hardware becomes outdated over time. If you rent a router from your ISP, periodically check to see if they have new equipment available. If you own your router, check to see if it uses the latest security protocols. Currently, Wi-Fi Protected Access II (WPA2) is a strong and common form. Wi-Fi Protected Access II (WPA3) is newer, stronger, and is gaining traction in the marketplace.
6. Set up a guest network specifically for your smart devices. Just as you can offer your human guests secure access that’s separate from your own devices, creating an additional network on your router allows you to keep your computers and smartphones separate from smart devices. This way, if a smart device is compromised, a hacker will still have difficulty accessing your other devices because they’re on a different network.
7. In the U.S., look for the Cyber Trust Mark. In 2024, the Federal Communications Commission (FCC) adopted the rules and framework for a new cybersecurity certification program.[iii] The program is voluntary, yet many noteworthy brands have shown support for this new Cyber Trust Mark. The mark will show that the smart device in question uses cybersecurity best practices, which makes it less vulnerable to threats. In a way, you can liken it to the Energy Star certification for appliances — a certification that can help you make a smarter purchasing decision when it comes to outfitting your smart home.
8. Protect your phone. You’ve probably seen that you can control a lot of your connected things with your smartphone. We use them to set the temperature, turn our lights on and off, and even see who’s at the front door. With that, it seems like we can add the label “universal remote control” to our smartphones — so protecting our phones has become yet more important. Whether you’re an Android or iOS device user, get security software installed on your phone so you can protect all the things it accesses and controls — in addition to you and the phone as well.

And protect yourself too

Aside from protecting your devices, there’s protecting yourself. Comprehensive online protection software will protect your privacy and identity as well. Depending on your location and the plan you select, ours includes up to $2 million in identity theft coverage, plus features that clean up old and risky online accounts. Further features remove your personal info from the sketchiest of online data brokers and help you monitor all your transactions in one place — including retirement and investment accounts. It’s comprehensive protection for a reason.

Want more on setting up your smart home?

Check out our Smart Home Security Guide. It offers further details on device protection and privacy advice for smart devices and smart speakers too. It’s free, and part of the McAfee Safety Series that covers topics ranging from online shopping and cyberbullying to identity protection and ransomware prevention.

[i] https://news.fit.edu/academics-research/apps-for-popular-smart-home-devices-contain-security-flaws-new-research-finds/

[ii] https://www.zdnet.com/article/hacker-leaks-passwords-for-more-than-500000-servers-routers-and-iot-devices/

[iii] https://docs.fcc.gov/public/attachments/DOC-401201A1.pdf