Michael TsaiVerified account

@rosyna Apple’s docs says "Enable App Sandbox to Minimize Damage from Malicious Code". https://developer.apple.com/library/mac/documentation/Miscellaneous/Reference/EntitlementKeyReference/Chapters/AboutEntitlements.html …

@mjtsai Yes, malicious code that hijacks and exploits a security vulnerability in your app.

@rosyna Where is that code running? And why wouldn’t it also be able to make the app ask the user which files to destroy, as you say?

@mjtsai the malicious code runs inside the legitimate app. That's how all flash exploits work. A user would notice an unusual dialog.

@rosyna So you’re saying that the reason the Mac App Store requires sandboxing is to protect against Flash, which most apps don’t use?

@mjtsai No, it's to prevent bugs in the apps from being exploited and doing harm to other parts of the system.

@rosyna But, aside from your example of Flash, where is the code that’s exploiting these bugs?

@mjtsai The bugs are in the apps. The malicious code is delivered multiple ways. Wikipedia has an article on RCE. https://en.wikipedia.org/wiki/Arbitrary_code_execution …