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Daniel R. Alonso is a litigator and white-collar defense lawyer who represents corporations and executives in cross-border investigations, corporate internal investigations, U.S. government investigations and enforcement actions, and criminal and civil trials.

His clients have spanned industries including financial services and fintech, construction and real estate development, and professional services. Dan draws on more than 30 years of high-level criminal, civil, enforcement and compliance experience to guide clients effectively through complex criminal and civil matters. He was formerly the number two official at the Manhattan District Attorney’s Office and the Chief of the Criminal Division in the U.S. Attorney’s Office for the Eastern District of New York and has served as general counsel of a multinational tech firm. In his current practice, Dan advises on all aspects of internal investigations, compliance, and government inquiries, from third-party subpoenas to potential enforcement and criminal actions.

Dan has led internal investigations of fraud, corruption, breaches of fiduciary duty, conflicts of interest and other high-stakes issues around the world, including extensively throughout Latin America. Bringing an investigator’s tenacity, a prosecutor’s perspective, and the tenacity of a seasoned defense lawyer, Dan makes informed, practical recommendations to help manage risk.

His broad litigation experience also includes defending clients in multilateral development bank debarment proceedings and handling civil RICO, Title IX, securities fraud and False Claims Act cases. He also frequently represents museums and art collectors in investigations concerning alleged looted antiquities. Fluent in business and legal Spanish, Dan adeptly helps clients navigate diverse cross-border activities involving Latin America and Spain,

Experience

  • Obtained complete dismissal for major Latin American construction contractor in multilateral development bank debarment proceeding, allowing the client to continue operating and bidding on multilateral development bank projects.
  • Negotiated a favorable disposition in the Southern District of New York for the head of the hedge fund strategy at Allianz Global Investors U.S., who had been charged with an alleged $6 billion securities fraud and faced potentially significant prison time. Persuaded the government to dismiss the securities fraud charges and accept a guilty plea for more limited charges, and persuaded the court to sentence the client to home confinement and monetary penalties.
  • Successfully represented the Archdiocese of New York and the Archbishop (Cardinal) of New York in a civil RICO action, securing full dismissal and sanctions against plaintiff’s attorney.
  • As court-appointed Receiver of IATrading.com, conducted an investigation that uncovered fraudulent attempts by one set of victims of an investment fraud wrongfully to obtain funds meant for all victims.
  • Successfully represented a special committee of the board of a private-equity backed Mexican tech firm in internal investigations of alleged corruption in Mexico.
  • Successfully represented the audit committee of a public reinsurance company in an SEC investigation of alleged accounting fraud.
  • Special Counsel to a New York State Senate Select Committee charged with investigating a sitting Senator to determine whether he should be expelled from the Legislature following a criminal conviction.

Credentials

Education

  • New York University School of Law, J.D., 1990
  • Cornell University, B.A., 1987

Bar Admissions

  • New York, 1991

Affiliations

  • Member, American Bar Association – Section of International Law
  • Member, Federal Bar Council
  • Former President, New York American Inn of Court
  • Member, New York State Bar Association – Committee on Standards of Attorney Conduct
  • Member, New York City Bar Association
  • Board Member, The Fund for Modern Courts
  • Member, Argentine Lawyers Association of New York
  • Life Member, Hispanic National Bar Association
  • Past Co-Chair, New York State White Collar Crime Task Force
  • Past Member, New York State Commission on Public Integrity
  • Past Member, Attorney Grievance Committee, First Judicial Department

Recognition

  • Best Lawyers in America® – Criminal Defense: White-Collar (2026) 
  • Super Lawyers – White Collar Crime (2025) 

Insights & Events

Prior Publications

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