by hacking around (e.g. with a debugger) In 10.11 Apple added System Integrity Protection[1][2], so it might not be as simple as it once was to hack preinstall

by hacking around (e.g. with a debugger) In 10.11 Apple added System Integrity Protection[1][2], so it might not be as simple as it once was to hack preinstalled apps. From wiki: Most preinstalled Apple applications in /Applications are protected as well. The kernel stops all processes without specific privileges from writing to flagged files and folders. It also prevents code injection, runtime attachment (like debugging) and DTrace [1] https://support.apple.com/en-us/HT204899 https://support.apple.com/en-us/HT204899 [2] https://en.wikipedia.org/wiki/System_Integrity_Protection https://en.wikipedia.org/wiki/System_Integrity_Protection