Electronic discovery (e-discovery) refers to discovery in civil litigation which deals with information in electronic format also referred to as Electronically Stored Information "ESI". The nature of digital data makes it extremely well-suited to investigation. For one thing, digital data can be electronically searched with ease, whereas paper documents must be scrutinized manually.
E-discovery can be carried out offline on a particular computer or it can be done in a network. Court-ordered or government sanctioned hacking for the purpose of obtaining critical evidence is also a type of e-discovery.
Computer forensics, also called cyberforensics, is a specialized form of e-discovery