Security Through Being More Secure Inherently?
What I meant is that "Security Through Obscurity" in and of itself is actually a bad philosophy. If the only way into the system is to have a conversation with an Elizabot through a conversation conducted through successive attempted login usernames, and get her to accept a proposal of marriage (frexample), then it's rather obscure, but once someone figures out the trick then it's open season.
But it's a useful shortcut to "Not being Windows, the script-kiddie hacker's favourite platform" (as a target, leastwise). I did try to be inclusive about the better security model in my description, because I thought adding a further bullet point within the same 'scope' might be less readable. (Looking back, it was bad enough.)
But I must say that most OOTB distros
Live versions have default root passwords, so that's going to be a possible attack vector in and of itself, once one profiles the OS and works out what's there and figures out a way to get the user to accidentally run a script that "su"s with said password. (Not that Live distros are necessarily that important to hack, and persistent enough with personal data or further information that they're going to be actually worth going for, of course.)
But, yes, Linuxes have proper user models. Although give me physical access to the hardware of either Linux or Windows (up to Vista, certainly, not yet had reason to do it for 7) and I don't need much more than a pre-prepared CD of one kind or other to gain access, under
most circumstances. (I could do it manually, with time to hand, but there's already tools built up which are easy to use. Which are all too easy to use, in fact. And when we've been asked to unlock machines with 'forgotten passwords' we feel obliged to make sure that the client can provide some sort of proof of ownership, just so we're not culpable in unlocking stolen goods[1].)
But in general, the sudo system on Linux does not bother the user as often as the UAC dialogues do in Windows, so there's far less equivalent to the "Click yes, click yes, click yes" automation that gets those users in trouble, as well. (Or, at first, worries them so much that they can't do what they're
trying to do.)
[1] To the extent that we recently had a laptop in with a password problem from a probably quite respectable source, and we're still not quite sure whether the request for proof-of-ownership (which makes an inelegant acronym!) was the reason they said "Oh, never mind then" and took it away again with no-fix-no-fee applying. I'm thinking that they were just blinded by my explanations (it had been a busy day, and I do tend to ramble when in a rush, you might have noticed), rather than it actually being 'hot', but you never know.