But typically the kind of person who is morally prepared to steal from you is not going to do it that way. Let me give you an example. I have gone to school a long time. I have studied and experimented tens of hours every week for the last 10 years to get smart enough to really understand the things I know. Now, all this does not mean there is no chance anyone will ever try to hack or crash your network or steal your data.
Idiots abound and wackos are out there and all data is valuable to someone.
You need to take steps to protect your network and your data, but the only people who benefit from fear-mongering are selling Internet security systems. It really isn't that bad and with a little planning and foresite you can build a good secure solution. Unless you have a need for specific defined levels of security you will probably only need to protect against casual hackers or people who know just enough to be dangerous. One of the best ways to prevent this type of attack is to simply follow the network plans in this web-book. First, the domain web site is not even hosted on your business network, so your business systems are not having to field external originating traffic.