[citation][nom]JohnnyLucky[/nom]Does a week go by without news of some sort of security breach or hacking? It starting to sound as if it is business as usual. is there nothing that can be done to stop it?[/citation]
Sure. Educate the users would be a start. But it's not that simple in reality. It costs money to create security, and it costs more to maintain it. On top of that it requires some amount of attention from the users, which at worst won't even want to know anything about it.
So there are two major obstacles with security. 1) people can't be bothered (it is a complex subject and even more so to untrained personnel) and 2) it costs money and doesn't generate any. My boss (IT boss in a company with approx 450 employees and a bit over 20.000 people passing thru the oracle database every year) has the stance that security must not cost more than it does not to have it. In other words we don't want data redundancy if it costs more than downtime would, and we don't need more network security than the estimated worth of what's accessible. And in fact most of our security systems are focused on keeping our own users out of the system where possible, but not nessecarily stop virus outbreaks or outside interference.
Anyhow, these letters here are sent to companies running p2p software right? that means companies where the users have installed and are running such software knowingly. You can't protect against that except by designing your internal policies so or remove the users who do it. No matter the firewall and protocol inspectors you cannot block people from using p2p. They could essentially just run their p2p trafic thru an encrypted proxy like internet cloaker. You can never protect against employees or customers who knowingly and willingly attempt to circumvent or disregard security. You can only be reactive to those events.