Identity Fraud occurs when a fraudster abuses personal data or identity details in order to impersonate an innocent party, or creates a fictitious identity, in order to open a new account or take out a new product.
Identity Fraud is crystallised when identity details of an individual or entity obtained via theft or deceptive means are used to avoid an obligation or liability or misrepresent with intent.
Ref. http://www.academia.edu/1018808/Defining_identity_crimes