Answer to quick puzzle about security and synchronization

Raymond Chen June 7, 2005 Jun 7, 2005 06/7/05

As many people quickly figured out, the reason why the the WaitForSingleObject returns immediately is that the call is failing. The reason is that the second process opened the handle with EVENT_MODIFY_STATE access, which grants permission to call the SetEvent function, the ResetEvent function, and the fatally flawed PulseEvent function...