Below are some general steps to protect your smart appliances from being hacked:

1. Verify the device’s security certificate.
2. Make sure to change the device’s default username and password.
3. Keep all firmware and software updated regularly.
4. Ensure to turn off the device when it is not being used.
5. Secure the device’s network using strong encryption.
6. Create a separate network for your devices using a virtual private network.
7. Avoid connecting to public networks if possible.