I prefer the name Security. It's short and sweet, it's what we already have in the URL. And we often call the site “Security Stack Exchange” already anyway.
Our focus may be on information security, but that's partly a historical accident (this site started out with a strong predominance of network security, and a gradual shift towards more application security via web applications where the twain meet), and partly a bias that any community website is dominated by people who work in computer-related fields. We accept questions about safes when they're used to store backup tapes, so why not accept exactly the same question if the safe contains diamonds?
Any subject good enough for Bruce Schneier should be good enough for us. [Goes off to post a question about squid biology.]
Ross Anderson's book Security Engineering is also a good topic guide. Here's a sample of topics that it covers:
- Concepts and theory: protocols, access control, multilevel security, …
- Information security: cryptography, emission security, bookkeeping, printing, seals, …
- Non-IT topics: economics, justice, nuclear control, …
So let's not replace “IT Security” by “Information security” which is a lot longer and dwarfs the word security by what is at worst a secondary concern and at best irrelevant. The name “Information Security” is worse than “IT Security”. It's longer, and will not turn away the stuff we don't want any more than IT does. Make the official name Security. Just drop IT.
To address any concern that the sky will fall down because we'll be inundated with questions about unemployment, terrorism, police, etc.: this is a site for professionals. I have no idea what an (un)employment security professional would be. As for terrorism and police professionals, I think their security questions could be on-topic, and I'll refer you again to Bruce Schneier tends to write about. As for personal defense, I consider it a tool that can be used for security, in the same vein as cryptography: its techniques are off-topic here, though its doctrine of use might be on-topic. (I do think this site is a lot closer to cryptography than to personal defense, because there is a lot more shared expertise).
Looking at this from the other side, we're already getting a small but steady flux of IT questions. But do you really believe that it's because of the “IT” in the name?
On the gripping hand, people who ask wildly off-topic questions by and large don't read. We could call the site whatever we like, it's not going to influence the non-readers. So let's not worry about them, eh?