What important action should Jo take to enhance her security when using a new device?

Changing her password is a crucial step in enhancing security when using a new device. This action is essential because it helps protect her accounts from unauthorized access. Default passwords or the last-used passwords may be easily compromised by intruders. By choosing a strong, unique password that is difficult to guess, Jo reduces the risk of her personal information and sensitive data being exposed or hacked.

While options like contacting support staff or completing security training can be beneficial in a broader sense, they don't directly address the immediate need for reinforcing her device's security. It's important for users to prioritize establishing strong password practices as a fundamental security measure when they start using any new technology. This proactive approach sets the foundation for a more secure computing environment.