Which security control would NOT effectively reduce risk to mobile devices?

Single factor authentication is considered less effective in reducing risk to mobile devices because it typically relies on just one method for verifying a user's identity, such as a password. This approach lacks the layered security benefits provided by multi-factor authentication, which combines two or more verification methods (e.g., something the user knows, something the user has, or something the user is).

In the context of mobile device security, single factor authentication does not adequately address threats such as device theft, unauthorized access, or password compromise. By relying solely on a single method of verification, it may be easier for an attacker to gain access to sensitive data stored or accessed via mobile devices.

In contrast, the other options—protecting data at rest, protecting data in transport, and session management—are all crucial for safeguarding mobile devices. Protecting data at rest focuses on encrypting data stored on the device, making it inaccessible to unauthorized users. Protecting data in transport ensures that data transmitted over networks is encrypted, preventing eavesdropping and interception during communication. Session management controls help maintain user sessions and prevent unauthorized access, making them vital in a mobile context where users frequently connect to various networks. Each of these controls significantly contributes to reducing risk and enhancing the overall security posture of