The risk of unauthorised access to or sabotage of important IT systems calls for IT security measures that perhaps received little attention previously. Traditionally focus has been on severed cables, power outages or software errors. We still need to take these factors into account, but cybercrime poses new questions and requires new answers.
It is important to remember that attacks to computer systems are not unintentional. There are criminal minds at work, and they are constantly fine-tuning their methods. So the threats are changing all the time. This means that an attack may actually be difficult to detect in time.