A. Listen to Trojan attack

B. Internet Scanning for plagiarism

C. Software and hardware failure

D. Information counterfeiting

A. Long connection

B. packet filtering

C. MACandIPaddress binding

D. Port Mapping

A. PurposeIP

B. destination port number

C. agreement number

D. sourceIP

A. Evidence is not necessarily needed in an investigation

B. Evidence acquired by eavesdropping is also effective

C. Document evidence is required in computer crimes

D. During all investigation and evidence, preferably with law enforcement involved.