A printer is an easily overlooked member of your IoT family, but consider how advanced modern printers are. Many are Wi-Fi and Bluetooth enabled, and they’re connected to your network, both at home and in the office. Without suitable precautions in place, your printer could be the backdoor a hacker needs to access your network. Home printer setup can seem really easy with the quick-start leaflet that comes with it, but take your time to go through the full setup process to check for security settings that you can enable.
For businesses, partition your printers behind a dedicated firewall and have a company printer policy in place with rules on things like not leaving printed documents unattended in the printer tray and setting up password access for users.