Ethics on computers and the Internet is called cyber-ethics, but technology doesn't change the fact that we all have to make ethical decisions every day. If you walk across the street on a red light you are breaking a law that is meant to protect you. If you steal a candy bar you are both breaking the law and more than likely, ignoring the ethics you were taught at home. The Right and Wrong of Ethics is not the same as breaking the law. For example, killing a person is illegal.
Most cultures believe it is ethically wrong, too.
However, some terrorist-like religious and political extremists around the world believe that killing people is ethically acceptable if it helps their cause. Not everyone agrees. Different states and different countries have different means of dealing with murderers. The law has no influence over those little voices in your head. What the voices tell you and how you choose to behave is entirely up to you.