Please download the newest version of Web Camera Security System from http://www.webcamsecuritysystem.com/ This is fixed in newest version. Let us know if you have any further problems.
This problem occurs when the Control+Alt+Z is already reserved by another program. There is a beta available which will assign the Control+Alt+Y instead as a temporary solution.
This is a beta work around until we can implement a hot key selection feature. If you need further support or special customization, please contact SecureWebCamera@Dreamstruct.com