The home WiFi router is one of those things we don’t think about until it stops working. It’s responsible for making sure all of those devices can connect to the internet. You could argue it’s the single most important device in your home. The bad guys think so.
Cyber Security analysts at Black Lotus Lab discovered malware in routers used in small homes and home offices. Here’s how they say it works:
The malware is deployed, most often, when someone opens an email attachment or visits a rogue website. The malware gains access not just to the computer but to the network’s WiFi router.
If you never changed the default username and password, bad guys can find the login information online and have access to the router’s administrator settings so they can upload and download files to any device that’s connected to your WiFi router. Phones, computers, web cameras, TVs, doorbells, and locks. Everything.
How do you know if your router is compromised? If the computer is sluggish, not loading pages or running programs like before. Of you get unusual pop-ups on the screen or get taken to strange or spoofed websites.
To protect your router and everything connected to it, turn the router off, wait about 20 seconds and turn it on again. This will reset the router and install any updates. Change the username and password in the router’s settings. If your router is 5 years old or older and it hasn’t been updated, you’ll want to re-set the router soon.
You may also want to get a new WiFi router. They’re much faster and more secure than they were 5 years ago.

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