Investigations - luck or display of forces?

The main problem of cyberspace is always tracking done the authors of offences. Some crimes will never be solved, unless maybe their authors unveil later on their methods; some may be solved although the more time elapsed the more unlikely there are chances to find the offenders. “The 10 Most Mysterious Cyber Crimes” (26 September 2008)
See also “Cybercrime expert to educate MSU engineers on "Gen Next Terror" (23 September 2008)

Comp with “Second TJX hacker pleads guilty” (24 September 2008) (also under "Second alleged hacker pleads guilty in TJX case") and maybe the silliness of the Palin’s hacker: hacking a high profile person is more likely to create a surge of investigatory reactions and actions than hacking a business, even if no real damage was done. “Palin Hacker's IP Address Linked to Tennessee College Dorm” (22 September 2008)