In a real-world crime, forensics deal with scientific techniques such as ballistics, blood test, and DNA test used with reference to the investigation of crime and obtain substantial forensic evidence to produce in the court to prosecute the perpetrators of crime. Whereas in Computer forensics, investigation and analysis techniques are applied to gather and preserve evidence from a particular computing device or devices from the crime scene in a way that is suitable for presentation in a court of law. The goal of computer forensics is to perform a structured investigation and maintain a documented chain of evidence to ensure the integrity of digital evidence presented in court cases. Computer Forensics is also synonymized as Digital Forensics or Cyber Forensics.
Computer Forensic examinations are carried out in different categories: Email Forensics for the analysis and recovery of emails, Database Forensics for the examination of data and related metadata, Memory Forensics for the examination of information from the device memory, Malware Forensics for the analysis of malicious programs, Network Forensics for the analysis of the usage of network and monitoring network traffic and finally Mobile Forensics to retrieve and analyze mobile device information.