How to collect Evidence in respect of internet crime

[bpagrawal]

How to collect Evidence in respect of internet crime

Crime scenes on the Internet
The Internet is a medium through which material can be
stored, relayed or shared. Despite its size and complexity,
it is nothing more than a large computer network.
Ultimately, any information on the Internet physically
resides on one or more computer systems and, therefore,
it could be retrieved through a forensic examination of
those physical devices. However, some of this information
may be volatile, e.g. instant messaging content; or it could
be altered or deleted prior to the location and examination
of those devices, e.g. website content. In such cases, it
may be necessary to capture evidence directly from the
Internet, possibly during 'live' interaction with a suspect
or by capturing live website content.
//http://www.lawweb.in/2013/03/how-to-collect-evidence-in-respect-of.html#more