What is Gatekeeper?
Gatekeeper helps protect your Mac from apps that could adversely affect it.
Some apps downloaded and installed from the Internet could adversely affect your Mac. Apps downloaded from the Apple App Store and Identified Developers are automatically permitted to run. Other apps that you can verify that were obtained form a legitimate source can be manually verified to run. Once you verify an application, it will be permitted to run every time.
If an application is not from the Apple App Store, or an Apple identified developer, you will see this dialog when the application attempts to run.
Allow an App
You can explicitly allow an application to run. Please be sure you know where you obtained this application, and that it was from a legitimate source. Also please be conscious of weither this application is necessary for your Dana workstation.
Hold the “control” key on your keyboard, then click on the Application’s icon.
You will be presented with a contextual menu with several options.
After selecting “Open”, you will be presented with a dialog that will allow you to confirm this application to run.
This dialog will confirm the name of the application, and what application downloaded it and when.
If you are sure you would like to run this application, click “Open”.
Additional information about Gatekeeper can be found on Apple’s support website at: https://support.apple.com/en-us/HT202491