Apple will require apps to be sandboxed in the Mac App Store on March 1, 2012. Some apps will have to be updated to comply with the new rules. The rules will apply only to apps that are not affected by the new system. The new system will allow apps to use only limited access to specific parts of the store. Apple says the rules will only apply to apps submitted to the store, not the apps that need to be added to the app store. The rule applies to apps from Apple’s iOS App Store, but some apps will be affected.”]
Source: https://www.csoonline.com/article/2130112/app-store-sandboxing-coming-in-march–developers-wary.html