The article focuses on the need for computer security professionals and digital investigators to combine talents and work together to respond more effectively to sophisticated intruders. A multidisciplinary investigative team with a range of skills is usually needed to apprehend sophisticated intruders. The ideal investigative team has expertise in information security, digital forensics, penetration testing, reverse engineering, programming, and behavioral profiling. A successful digital investigation is heavily dependent on the logging and backup systems an organization has in place, and how quickly sources of evidence are located and preserved. The process of identifying and preserving potential sources of evidence on a come promised network includes acquiring the contents of hard drives and physical memory on hosts, freezing various logs, and capturing network traffic. Further, private investigators can help build a case by conducting surveillance, pretext communications, covert online research, and interviews. Behavioral profilers can help develop leads and assess dangers, and can instruct digital investigators to look for specific intruder behaviors.