Michael S. Tumsaroch CEIC


Michael S. Tumsaroch is a director in Guidepost’s Washington, D.C. office where he focuses on monitoring and compliance engagements. Mr. Tumsaroch spent the past 15 years as a law enforcement and banking compliance professional in the U.S. and Southeast Asia. He is well versed in intelligence matters, Bank Secrecy Act and Anti-Money Laundering (BSA/AML), the Controlled Substances Act, independent reviews, investigations, communications analysis, and litigation support.

Mr. Tumsaroch has conducted multiple BSA/AML independent reviews for cryptocurrency-focused financial services.  In addition, he has worked on numerous engagements investigating the theft of cryptocurrency and non-fungible tokens on multiple blockchains. His related experience includes:

  • Investigation of the theft or embezzlement of cryptocurrency and non-fungible tokens on multiple blockchains
  • Drafting reports to client’s attorneys or law enforcement to coordinate the recovery of crypto assets
  • Research of money laundering laws in China and Australia for a Fortune 500 company before merger
  • Assisting the United Nations in developing counter-terrorism training
  • Creation of bespoke data analytics to identify money laundering in financial institutions and investigate irregularities of the distribution of controlled pharmaceuticals
  • Conducting due diligence of financial institution customers and controlled substance providers

Prior to joining Guidepost, Mr. Tumsaroch served as an Intelligence Research Specialist with the Drug Enforcement Administration (DEA) in various assignments around the world. At DEA Headquarters, he served in a strategic unit and focused on Mexico and Central America issues.  Later, Mr. Tumsaroch was reassigned to the U.S. Embassy to Thailand, supporting law enforcement activities throughout Asia and coordinating with other agencies in anti-money laundering efforts, and against terrorist financing and narcoterrorism. Mr. Tumsaroch served as acting field intelligence manager for DEA’s Asia Pacific Region, overseeing DEA’s intelligence program within the region.  Notably, he is credited with identifying a narcoterrorism financing cell based in Southeast Asia with an international footprint.  Mr. Tumsaroch’s final assignment with DEA was as the intelligence representative to the Indiana High Intensity Drug Trafficking Area program, providing intelligence support to multiple law enforcement entities targeting international drug traffickers with a presence in Chicagoland.

Previously, Mr. Tumsaroch served as a bank examiner with the Massachusetts Division of Banks. His specialty was conducting examinations of money service businesses (remitters, check cashers, etc.) to ensure compliance with BSA/AML and general Massachusetts banking regulations. Mr. Tumsaroch and his team worked with federal law enforcement in identifying of black- market Brazilian money exchange.

Mr. Tumsaroch got his first insights into law enforcement at Northeastern University, studying Criminal Justice. He served internships with both the Northeastern University Public Safety Division and the U.S. Marshal Service.  Later, Mr. Tumsaroch worked with the U.S. Marshals coordinating movement of prisoners remanded to the District of Massachusetts.

Did you know?

Michael grew up watching police shows with his father, generating his interest in law enforcement.


  • Master of Business Administration, Accounting, Northeastern University
  • Bachelor of Arts, Criminal Justice, Northeastern University


  • Top Secret Sensitive Compartmented Information TS/SC
  • Chainalysis Cryptocurrency Fundamentals Certification (CCFC)
  • Chainalysis Reactor Certification (CRC)
  • Private Investigator, State of Texas
  • Chainalysis Investigation Specialist Certification (CISC)


  • Thai

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