[saagarjha]

It is not, moprotect (and mach_vm_protect) work just fine if you have the appropriate entitlements or have a way of getting around its checks.

[thekingofh]

I think the entitlements are not offered to apps such as firefox and those that are not Apple correct?

[saagarjha]

Some of them are, but they cannot be used with apps delivered on the App Store.