Answer:
Forensic Document Examiner
Step-by-step explanation:
There is an extensive list of possible frauds, one day you could be working on a case related with checks falsification and another day you could be working on a case of money laundering in tax havens, it is not possible for a company to have an expert in every area, especially in the field of forensic document examiner because there are many kinds of different experts in this area, therefore, it is likely that you would have to hire a forensic document examiner for a case involving something specific.
Note: Forensic document examiner specializes in document fraud detection and protection but there is not just one type of it there are many sub-specialization in this area.