The D.O. made another point that just jogged my memory. I forgot about encryption standards.
You can purchase key pairs or you can purchase software to generate public and private key pairs. Of course, if you generate your own keys, and want to encrypt messages and mail, you will also have to provide the key to all of your trusted recipients, or they cannot understand the message.
Most Microshaft Mouse Monkeys are familiar with MS Certificate Server, and of course there is Veri-Sign and many others. The higher the encryption, the longer it takes to break in. I don't think any adventurous hacker seeking to post his exploits on a hacker publicity page like: http://www.attrition.org is going to waste time chasing JW's.
Or, I don't think the society's robots would attempt it, even if they were told. It would cause a Bethel scandal. Who knows? Would they ever secretly hire someone from the outside to deface and destroy apostate web-sites? I am still waiting for the first defacement of the WTBS sites to occur.
I am sure they have written C++ & JAVA programs to "poll" their server's root document directories and overwrite all of the pages with replacements in case of unauthorized modifications. It's a common practice to protect the server's root. You hack the page, but every 30 minutes a daemon/script/executable is running in the background checking for the page version and date and overwriting with the original if it doesn't match.