Walter Mack, Attorney

Walter Mack has extensive civil and criminal litigation, investigative and regulatory experience in and out of the government. From 1993-1995, he served as Deputy Police Commissioner of New York City for Internal Affairs, where he was in charge of all police investigations of police corruption and brutality and instituted new policies to combat these problems. Prior to that, Mr. Mack was an Assistant United States Attorney for the Southern District of New York, Deputy Chief of the Criminal Division, Chief of the Organized Crime Unit and Senior Litigation Counsel within that office. In that capacity he personally investigated and prosecuted at trial a number of complex and significant cases brought in the Southern District of New York. Mr. Mack served as a military police supervisor and a rifle company commander in Vietnam. He also has frequently worked with civil rights organizations, such as the Civilian Complaint Review Board in New York City, during nineteen years serving in or working with government agencies. He served as senior vice-president and associate general counsel at Shearson Lehman, where he supervised and worked with management on securities and employment matters and on compliance investigations.

Practice Areas:

• White Collar Criminal Defense
• Securities Enforcement
• Complex Civil Litigation
• Internal Investigations, Corporate Compliance, and Monitorships
• Criminal Defense and Appeals
• Investigative Services

• U.S. v. Paul Castellano, et. al.

• U.S. v. Michele Sindona

• U.S. v. Harold Gleason

• U.S. v. Anthony Gaggi, et. al.

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