Samsung Android must be configured to enable a screen-lock policy that will lock the display after a period of inactivity.

The screen-lock timeout helps protect the device from unauthorized access. Devices without a screen-lock timeout provide an opportunity for adversaries who gain physical access to the mobile device through loss, theft, etc. Such devices are much more likely to be in an unlocked state when acquired by an adversary, thus granting immediate access to the data on the mobile device and possibly access to DoD networks.

Setting a lock type enables a screen-lock policy, and each lock type has a password strength. Password strength is a measure of the effectiveness of a password in resisting guessing and brute force attacks. The ability to crack a password is a function of how many attempts an adversary is permitted, how quickly an adversary can do each attempt, and the size of the password space. A minimum level of complexity is needed to ensure a simple password or easily guessed password is not used.

Configuring a minimum password complexity mitigates both the risk associated with an adversary acquiring a device in an unlocked state and a screen lock type with a weak authentication factor.

SFR ID: FMT_SMF_EXT.1.1 #2a