Breaking in to large corporate and government network not as difficult as you might think.

Interview With A Convicted Hacker: Robert Moore Tells How He Broke Into Routers And Stole VoIP Services

It's amazing to me that really sophisticated technology companies and system administrators make the same old lazy errors the newbies do. I get irritated when my clients and listeners don't do what is necessary to secure themselves, their families and businesses, but many of the most high powered, high paid tech people don't do it either.

Have passwords. Make them long and difficult to crack. No dictionary words or pet names. Take the time and trouble to learn what you need to do, or hire someone you can trust to do it. Even when it seems like too much trouble. Or else!