[rabboRubble]

My reading of Krebs On Security (krebsonsecurity.com), Mirai scans for factory default passwords or hardcoded default admin credentials. Going at this as a non-technical person, I would:

* Inventory all IOT devices in your possession.

* Find the device manuals and make sure you've changed the default password(s). Note there may be devices where it appears you've updated, but that have secret credentials you can't modify.

* Make note of which of your devices do not have an obvious way to change the factory default password.

* Keep an eye out for lists of devices that are known problems, here is one such sample list: https://blog.sucuri.net/2016/09/iot-home-router-botnet-lever...

* Check each manufacturer to see if they have issued a firmware upgrade to address security issues. Apply update.

* Think about retiring devices that appear on the "bad" hardware lists or the devices with unchangeable factory defaults.

Hope this helps.