You recently purchased a smart thermostat for your home. It allows you to control the temperature remotely through a mobile app. Considering the security of your new smart thermostat, which of the…

Keeping the firmware updated is highly effective as it applies security patches, closing known vulnerabilities that could be exploited for unauthorized access.

Leaving the thermostat connected to an 'open to all' Guest Wi-Fi network is the LEAST effective action because guest networks often lack encryption and isolation from other devices, making the smart thermostat and its traffic highly vulnerable to interception and unauthorized access by anyone on that network.

Changing default passwords is a fundamental and highly effective security practice, preventing unauthorized access by attackers who commonly try default credentials.

Enabling remote access only on a secure home Wi-Fi network ensures that external access attempts are filtered through your secure router and network, adding a significant layer of protection.