Cyber-terrorism

There are a lot of world which I never know.
In Japan, cyber war-fare by Nationalist to Korea is popular, and, in addition, the DoS attack is often seen to criticize a policy of specific group and corporate culture. In these, cracker gives manipulation from the states that is reading impossibility because of the access excess of the website, and there is the case which the messages were left.
In particular, there is the case that the media companies such as newspaper publishing companies, publich institutions such as the local government, and site of the medium and small-sized business are attacked in relation to a racial problem and a diplomatic problem, and they are tempered.
I don't know about cyber terrorism very much because I don't think such cases is close to me.
However, more the Internet develop, the more the case which relates to us may occur.
I want the experts to solve this problem as soon as possible...