Fast User Switching must be disabled.

From MAC OSX 10.6 Workstation Security Technical Implementation Guide

Part of OSX00330-Disable Fast User Switching

Associated with IA controls: IAAC-1

SV-37229r1_rule Fast User Switching must be disabled.

Vulnerability discussion

Fast User Switching allows multiple users to log in simultaneously. This makes it difficult to track user actions and allows users to run malicious applications in the background while another user is using the computer.

Check content

Open System Preferences->Accounts Panel. Select Login Options. Ensure the "Show fast user switching menu as" is not checked. If the option is checked, this is a finding.

Fix text

Open System Preferences->Accounts Panel. Select Login Options. Deselect "Show fast user switching menu as" to disable this option.

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