Explain fully the reasons for conducting a thorough investigation of a case. What ethical issues dictate how an investigation is to be conducted? How can the Internet be used to effectively conduct an...

Explain fully the reasons for conducting a thorough investigation of a case. What ethical issues dictate how an investigation is to be conducted?

How can the Internet be used to effectively conduct an investigation of a case? Explain, comparing with examples of conventional methods that could also be used.