How terrorist groups end (RAND)

This has some interesting implications to hacking groups, both financially and politically motivated. While sending a Hellfire-equipped Predator drone after hacktivists is typically regarded in polite society as "a bit much," the lessons learned here can be grafted to the online world with some modification.

The list is certainly not exhaustive in terms of case studies, but it is valuable for the framework of tracking a tango group from cradle-to-grave, with time and cause of death available.

http://www.rand.org/pubs/monographs/MG741-1/