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William Kowalski

William Kowalski

Bill Kowalski | JD | Principal, RCIS Director of Operations

Troy, MI | 248.458.7870 | Email | Linkedin
Service Areas | Fraud and embezzlement investigations, litigation support, cybercrime investigations, crisis management

Bill is a Principal and Director of Operations for Rehmann Corporate Investigative Services (CIS). He is based in the Troy office.

As Director of Operations for Rehmann CIS, Bill manages complex fraud investigations for public and private sector entities. He also performs fraud risk assessments throughout Michigan, helping agencies and corporations identify, eliminate, and prosecute fraud. Bill’s investigations of financial misappropriation have resulted in numerous successful prosecutions throughout Michigan. He has been retained to advise key state agencies in fraud prevention strategies.

In addition, Bill manages a team of digital forensics experts providing breach response and data analysis services. He also conducts seminars on fraud prevention and educates about the threat and cost of cybercrime.


Bill began his investigative career in 1983 with the Federal Bureau of Investigation (FBI). During his 25-year tenure with the FBI he served in the Detroit, Memphis, New York City, Flint, and Washington, D.C offices. Bill was most recently the Assistant Special Agent in Charge of the FBI office in Detroit with oversight responsibility for counter-terrorism and counterintelligence operations throughout Michigan.

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