What is the main benefit of using strong, unique passwords for every service?

Using strong, unique passwords for every service significantly reduces the risk of unauthorized access. This is because each password serves as a barrier to potential attackers. When passwords are strong, they are harder to guess or crack through techniques such as brute force attacks. Additionally, using unique passwords means that if one password is compromised, it doesn’t jeopardize the security of other accounts. Each service remains protected behind its own independent password, effectively isolating them from potential breaches.

Focusing on the other options, simplifying access and avoiding password fatigue may provide some convenience, but they do not address the core security issue. Compliance with regulations is essential for many organizations, but the primary reason for using strong, unique passwords is fundamentally to secure accounts and sensitive information from unauthorized access.