Before we explore the answers to that question, and there are many different answers, it's important to get a handle on just what constitutes a cybercrime. In 2013, the Police Executive Research Forum (PERF) crafted a fairly comprehensive definition of "cybercrime" for a survey. According to PERF, cybercrime is a range of crimes, including theft or fraud; hacking, data/identity theft, and virus dissemination; or the storage of illegal material such as child pornography in digital form. The only thing all these crimes have in common is that they can be perpetrated using a computer. Where this definition fails is that just about every criminal act today involves a computer. The guy selling heroin may use a smartphone (otherwise known as a handheld computer), e-mails may establish the association between the members of a burglary ring, and a murderer or rapist may have kept images of his target on a tablet.
In order for local law enforcement agencies to combat cybercrime, they need to know what resources are available. Many agencies turn first to the feds, and rightfully so. The FBI and the United States Secret Service are the agencies best equipped to investigate cybercrime, and they have worldwide reach. The problem is the feds can't handle every cybercrime case and certainly not every criminal case with a cyber element. Which means local law enforcement agencies have to shoulder much of the burden.
Whether a law enforcement agency is equipped to perform a digital investigation comes down to the skills and training of its officers and the tools available to them. But most agencies do not have this capability. Which is one of the reasons why the closure rate on cybercrime cases is abysmally low.
Combining Resources
The first thing local agencies need to do about cybercrime is encourage victims to report the crime. There are a variety of reasons why victims are often reluctant to report cybercrimes. But it basically comes down to one or all three of the following: the amount of money involved is too small to worry about; they don't believe anything can be done about it, and/or they don't know where they can report such crimes. The FBI has set up the Internet Crime Complaint Center (IC3.gov) so that cybercrime victims have a place to turn. Of course, they can also report these crimes to local law enforcement agencies. Unfortunately, very few officers who respond to such complaints know what to do about them.
What happens after such a local complaint depends on the agency. Some agencies have cybercrime investigators and digital forensics specialists, but many don't have the personnel, money, or expertise to pursue such cases. Experts recommend that agencies pool their resources in task forces and regional cybercrime teams. "Combating cybercrime is a team sport," FBI Assistant Director Joe Demarest said at a 2014 PERF conference on cybercrime. "Whether it is a local, state, or federal level agency, one agency can't do this alone."