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If the App is not a native of the App Store, the Gatekeeper will look for a digital signature that identifies the developer.

All the software and apps listed under the App Store undergo the process of code review by the engineers of Apple and given a set of unique cryptographic digital signature that is then verified by Gatekeeper.

If the App has been downloaded from the App Store, the Gatekeeper will, by default, allow it to be installed.

When you attempt to download an application from the Internet, the Gatekeeper will behave in any one of the three ways in details: Installation of applications from other sources like removable media or network drives is not checked by the security feature. Gatekeeper security applies only to the apps downloaded from the Internet. MacOS Gatekeeper verifies the application before allowing them to run this implies that the apps that are not listed in the Apple Store cannot be installed into your Mac. You will see that Apple reviews and offers only those apps that are safe and compatible to use.

It was first introduced in the MacOS 10.7.3 (Lion) in the year 2011.

Disable Gatekeeper on iOS Devices What is the Gatekeeper in Mac?Īs the name suggests, Gatekeeper is Apple’s security feature that keeps a check on the apps being installed on your Mac and keep the rest away.