Authentication codes should be changed at what interval?

Authentication codes should be changed at what interval?

• A. Every 6 months or when compromised
• B. Every month
• C. Only during major upgrades
• D. Every 3 years

Answer: (A)

Regular rotation of authentication credentials reduces the window of opportunity for misuse if a code is leaked or stolen. Changing them every six months provides a practical balance between security and operational overhead, and it’s important to also rotate immediately if a compromise is suspected or confirmed. This approach minimizes ongoing risk because even a short-lived credential exposure can lead to unauthorized access if not updated promptly. Keeping credentials only during major upgrades misses chances to curb exploitation from earlier leaks, and waiting as long as three years leaves systems exposed to evolving threats. Changing them every month would heighten security but adds administrative burden and can lead to user fatigue or weaker credential practices. So, the best practice is to update authentication codes every six months or as soon as a compromise is detected.

Regular rotation of authentication credentials reduces the window of opportunity for misuse if a code is leaked or stolen. Changing them every six months provides a practical balance between security and operational overhead, and it’s important to also rotate immediately if a compromise is suspected or confirmed. This approach minimizes ongoing risk because even a short-lived credential exposure can lead to unauthorized access if not updated promptly.

Keeping credentials only during major upgrades misses chances to curb exploitation from earlier leaks, and waiting as long as three years leaves systems exposed to evolving threats. Changing them every month would heighten security but adds administrative burden and can lead to user fatigue or weaker credential practices. So, the best practice is to update authentication codes every six months or as soon as a compromise is detected.