I would not say that. Just about anything can be hacked. It is only a matter of time. How fast a developer patches a security hole should be taken into consideration, more than the hole itself.
Millions have happily dealt with holes in the MS OS for years, yet all the while waiting long periods of time for patches. As I understand it cPanel was patched quite quickly.
The best way to secure a computer is to unplug its power from the wall.
