This document discusses the meaning, definitions, and nature of cyber crimes. It begins by defining cyber crimes as any crimes involving computers and networks, where the computer may be used to commit the crime or be the target. Two common definitions of cyber crime are provided - one defining it as a crime using computer technology as a tool or where the computer is the object, and the other referring to it as computer crime. Indian law defines several cyber crimes like intentionally altering computer source code, hacking by unauthorized computer access, and transmitting obscene materials. Examples of common cyber crimes like identity theft, fraud, hacking, piracy, and storing illegal information are also outlined. The challenges of investigating and preventing cyber crimes through technology, investigation, and legal