How do I secure my home IoT devices from being recruited into a botnet?

All answers to this question.

The most effective strategy for home users is "Network Segmentation." Most modern routers allow you to create a "Guest Network." Put all your IoT devices on that guest network and keep your main computers and phones on the primary one. This way, if a smart bulb is compromised, the attacker can't easily move laterally to your laptop where your bank info is stored. Also, check for firmware updates monthly. If a device is old and no longer receives security updates from the manufacturer, it's honestly safer to just replace it or keep it disconnected from the internet.

   Answered 2025-12-09 by Heather Williams

Have you looked into setting up a Pi-hole or a similar DNS-level blocker to see where your devices are trying to "phone home" to?

   Answered 2025-12-11 by Kevin Harris

• A Pi-hole is great for visibility. You'd be shocked to see how often a "smart" device tries to connect to random servers in other countries. You can also use it to block known command-and-control (C2) domains. Another tip: disable UPnP on your router. It's a massive security hole that allows IoT devices to automatically open ports to the outside world without you ever knowing.

     Commented 2025-12-13 by Charles Baker

Always change the default credentials! If the device doesn't let you change the password, it shouldn't be on your network. It's a ticking time bomb for an exploit.

   Answered 2025-12-15 by Jessica Taylor

• Exactly, Jessica. Any device with "admin/admin" as a hardcoded credential is an open door for automated scripts and botnet recruiters.

     Commented 2025-12-17 by Joshua Garcia