Identity theft deterrent / strategy
For some quick wins I suggest you read into NIST initiative on National strategy for trusted identities in cyberspace
To give you the quick summary of the program focus and objective it is to...
The new Identity Ecosystem is meant for sensitive transactions — banking, shopping, accessing health records, etc. It is designed to protect your privacy by helping online providers verify your identity before accepting or providing sensitive information to you
This is where the real attacks happens and attacks that costs which is sometimes unquantifiable e.g reputation and trust.
I hope I have understood you correctly if you want some responsive authority to take action in case you experience some indications of fraud then depending upon the country you live and the laws that applies you can best contact local law agency. Like in case of USA FBI help you identify the fraudster through this online reporting system.
If you are from USA then following agencies get involved when its comes to prosecution
Excerpt taken from What Are Identity Theft and Identity Fraud?
Federal prosecutors work with federal investigative agencies such as the Federal Bureau of Investigation, the United States Secret Service, and the United States Postal Inspection Service to prosecute identity theft and fraud cases.
Also, taken from the excerpt
Under the Identity Theft and Assumption Deterrence Act , the Federal Trade Commission is responsible for receiving and processing complaints from people who believe they may be victims of identity theft, providing informational materials to those people, and referring those complaints to appropriate entities, including the major credit reporting agencies and law enforcement agencies
ONLINE REPORT FTC