Which policy ensures that passwords are not reused across different applications?

• A. Reuse across apps allowed
• B. No reuse of passwords across different applications
• C. No password changes
• D. Use the same password for all

Answer: (B)

Preventing password reuse across different applications means each service has its own unique credential. This limits how far a breach can spread: if one site’s password is stolen, that single credential won’t automatically grant access to other sites. It helps guard against credential stuffing, where attackers try stolen passwords on many services. To support this, use different, strong passwords for each site, ideally with a password manager to generate and store them, and enable multi-factor authentication for added protection. The other options would weaken security by allowing reuse, not enforcing changes, or using one password for all sites.