As new technologies develop, terrorist groups are developing new methods of attack by using the Internet, and by using cyberspace as a battlefield, it has become increasingly difficult to discover the identity of attackers and bring them to justice.
In Cyberthreats: The Emerging Fault Lines of the Nation State Susan Brenner gives a thorough explanation of how military and law enforcement personnel respond to these attacks and why bringing cyber-terrorist to justice can be difficult and sometimes impossible.