The macOS system must enforce session lock no more than five seconds after screen saver is started.

A screen saver must be enabled and the system must be configured to require a password to unlock once the screensaver has been on for a maximum of five seconds.

An unattended system with an excessive grace period is vulnerable to a malicious user.

Verify the macOS system is configured to initiate a session lock within five seconds of the screen saver starting with the following command:

/usr/bin/osascript -l JavaScript << EOS function run() { let delay = ObjC.unwrap($.NSUserDefaults.alloc.initWithSuiteName('com.apple.screensaver')\ .objectForKey('askForPasswordDelay')) if ( delay <= 5 ) { return("true") } else { return("false") } } EOS

If the result is not "true", this is a finding.

Configure the macOS system to initiate a session lock within five seconds of the screen saver starting by installing the "com.apple.screensaver" configuration profile.