This is in reference to advice on various security blogs about the Mirai IoT DDoS attacks. The average security blog will say something like, "reboot your IoT device and then change the default password and bingo bango, you're secure!"
Except what? My (smart) blu-ray player doesn't have a "password". Neither does my Amazon Fire Stick, my Samsung DVR box, or about 9 other random IP devices in my home. What do they mean when they say to change the password of your IoT devices?