I'm not personally comfortable with having any kind of document on my computer that has all this information stored in Clear-Text or even in a Word type document. There are search-bots out there that look for this type of file in Text files, RTF-WordPad files, Word Docs, or Excel Docs. It's unlikely that someone would get into Mike's or my computer network since they have been security hardened by years of experience in protecting our computers; but not necessarily so with the average home user's computer. During my teaching days, I was able to connect into home student's computers *with their written permission* to do a security breach check and was able to find online banking passwords, and remotely login that student's bank remotely, and throw it up onto an overhead projector screen in the classroom to demonstrate the possibility of this being done. That student and the rest of my class were completely flabbergasted at my ability to do this!
This was an Advanced Computer Forensics & Security Class, so that was an appropriate demonstration. Most people have read about this sort of thing or seen it on TV. It's much more difficult than it appears to be, nevertheless, a skilled hacker or computer professional can do it, so you need to know about that.
I prefer to use programs that encrypt & password protect that type of information. That's just me. It's also a good idea as Mike says to keep really critical information off of your computer; but many people forget about doing this, say while they are on a Government site such as Social Security and save an online form that of course contains their Social Security number, and don't even realize that the form got saved to their computer after it was submitted to the Social Security people! It's still there on their computer, and they don't even know it.
This is another good reason to have your computer gone over once a year by a computer professional to find stuff just like this, and remove it.
My 2 cents.
Cheers!
BBJ