What concerns you more about Cyber Crime?

Cyber attacks to Government. I would like to know more about ways to prevent Cyber Crime

Cyber attacks to personal computers. I am afraid of having my bank details or personal accounts hacked, violated.

Cyber attacks to private companies – I work for or own a private company and I am quite concerned about having files or personal accounts hacked, violated.

I don"t understand completely what Cyber Crime is and would like to know more.