Everything computer related is hackable. So of course. You always have to be careful to have the latest most secure wallet.
This is key, most people do not take the time to update their computers they think it is just a waste of time, and while I am not going to deny that sometimes it can be extremely annoying to update your computer and sometimes programs that work perfectly break down after an update, you still need to update your computer and its programs regularly or risk the possibility of being hacked with a known vulnerability.