Gatekeeper is a feature of the OS X operating system designed to prevent malware from being installed on your computer. It is included with OS X Mountain Lion and newer versions of OS X. The default settings for Gatekeeper only permit applications downloaded from the Mac App Store from being installed on your computer.
Gatekeeper falsely reports that Syscomp applications are “damaged and can’t be opened”.
Syscomp software is not distributed through the Mac App Store and requires Gatekeeper to be disabled during installation. Gatekeeper can be re-enabled after installation.
The instructions below are based on an article by the IT Services Department at the University of Chicago.