type of attack could have been avoided? >> well, certainly any system administrator that is given access to the entire computer network, they need to be extremely careful in guarding all of their log-in information. and what sony should have done better, this expert that i spoke with said, you can't necessarily stop somebody from getting into your system, but you should have a detection system where you can tell once it's been infiltrated. in this case, this hacking went on for quite some time. enough time for the hackers to steal a tremendous amount of data, a huge amount of data that they're now using to systematically punish this company. that should have been stopped, the experts are saying, a lot sooner before it came to all of this. >> will ripley live for us in tokyo. a lesson we can all take way from this. don't send any nasty e-mails about your coworkers to or from any of your coworkers, because there is no such thing as privacy in this modern world.