Crime Investigation is all about visiting a crime scene and gathering a evidence for a specific purpose. When it comes to a cyber crime, the job is to deal with computer crimes. Bank and credit card fraud, computer hacking, industrial espionage, organized pedophilia and terrorism can be understood as some of the computer crimes. Nowadays, computer forensics is gaining significance. Investigating and stopping these crimes is difficult because it is hard to prove a crime is committed.The ability to preserve and recover digital evidence can be critical for the successful prosecution of these crimes.