I think the chance for remote execution would be far less if they used unix based systems.
Also when dealing with sensitive stuff like this, I expect them to have better monitoring of their services, like notifications on access, etc.
Also when dealing with sensitive stuff like this, I expect them to have better monitoring of their services, like notifications on access, etc.
OSX is a *nix based system and has had far worse security than Windows for ages (lagging with basic things like address space randomization). Just because Unix is not considered a primary attack surface area for viruses and alike, it does not make it inherently more secure. That kind of attitude is indeed even more dangerous than having a well secured Windows computer.
(Disclaimer, Mac user myself)
Both systems have unpatched root exploits if you have access to the display subsystem. Both were initially developed for trusted local environments, then adapted for public network use some ten or fifteen years later and whatever security issues that brought was patched as they were found. I'm just not sure how to argue more or less security in that environment. Users still get owned by running Flash (so no ASLR for you) and Outlook.