Cyber crime refers to illegal activities involving computers and networks. Some common types of cyber crime include cyber stalking, cyber contraband, cyber laundering, cyber terrorism, cyber theft, hacking, phishing, computer viruses, identity theft, and piracy. Nepal's cyber law, known as the Electronic Transaction and Digital Signature Act, was enacted in 2004 to regulate online commerce and support e-governance. Cyber ethics are moral principles for computer use, such as not using computers to harm others or steal.