What is an essential habit for maintaining online security?

Regularly changing passwords and monitoring accounts is vital for maintaining online security because it helps protect against unauthorized access and potential identity theft. By frequently updating passwords, individuals minimize the risk of an attacker being able to gain prolonged access to their accounts if a password is compromised. Additionally, monitoring accounts allows users to quickly identify any suspicious activities or unauthorized transactions, enabling them to take immediate action to secure their information.

The other options present less secure practices. Using public Wi-Fi networks increases vulnerability to cyber attacks, as these connections are often unencrypted and can be intercepted by malicious actors. Saving all passwords in a browser, while convenient, poses a security risk if the device is compromised, as attackers can easily access stored credentials. Lastly, using simple passwords makes accounts more susceptible to guessing and brute-force attacks. Therefore, regularly changing passwords and actively monitoring accounts is the best method for ensuring online security.