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    Walt Green photograph

    Walt Green

    Partner

    Baton Rouge
    225-376-0239
    walt.green@phelps.com
    Areas Of Focus
    White Collar Defense and InvestigationsLitigationCybersecurity, Privacy and Data Protection

    Walt Green focuses his practice on cybersecurity, white collar criminal defense and governmental investigations, and litigation. Walt served as the United States Attorney for the Middle District of Louisiana and the Executive Director for the National Center for Disaster Fraud from 2013-2017. He retired from the United States Department of Justice with over 20 years of federal experience. Walt also served in the United States Marine Corps for over 30 years, retiring with the rank of Colonel.

    In addition to defending businesses against cyber class actions in multiple jurisdictions, Walt routinely provides real-time counseling for companies to respond to data breaches and cyber intrusions of their computer systems, including incidents across multiple states. He guides companies through cyberattacks, including C-suite counseling, coordinating forensic efforts, liaising with local and federal law enforcement agencies, and providing domestic and international notification advice.

    Walt also advises domestic companies on compliance with U.S. data privacy laws, including the California Privacy Rights Act and other states’ data regulations. He helps multinational companies stay on top of the European Union’s General Data Protection Regulation and China’s Personal Information Protection Law.

    In addition to his cybersecurity practice, Walt defends doctors, nurses, health care systems and health care executives in civil and criminal health care investigations. He's also a member of the firm's Diversity and Inclusion Committee.

    Since entering private practice, Walt has been a sought-after speaker and commentator on fraud, cybersecurity and data privacy issues, in BBC News, The Economist, The Washington Post, USA Today, CNN Money, and the Associated Press. Walt also earned a spot on the National Law Journal's 2017 Cybersecurity and Data Privacy Trailblazer's list, a list which highlights the top 25 attorneys who have helped make a difference in the fight against criminal cyber activity.

    United States Department of Justice Experience

    As the United States Attorney, Walt served as the chief federal law enforcement officer over nine parishes. In this capacity, he was responsible for prosecuting federal crimes including crimes related to terrorism, public corruption, cybercrimes, health care fraud, financial crimes, human trafficking, child exploitation and drug trafficking networks. Walt also defended the United States in civil cases, collected debts owed to the United States, and chaired the United States Attorney General’s Advisory Council’s Service Members and Veterans Working Group.

    While simultaneously serving as the Executive Director for the National Center for Disaster Fraud, Walt worked with local federal and state law enforcement agencies to investigate, and ultimately, refer credible leads regarding fraudulent activities associated with national disasters to law enforcement agencies nationwide. Such disasters included Superstorm Sandy and Deepwater Horizon (BP Oil Spill).

    Walt also created and led the Middle District of Louisiana’s innovative cybersecurity initiative: a comprehensive effort to increase awareness of cyber issues, better protect potential victims in the District, and take a more aggressive approach to initiating criminal investigations and prosecutions of cybercrimes. Under his leadership, relationships developed among the Middle District’s federal, state and local law enforcement partners, a new law enforcement working group was established to proactively address and combat cyber threats, and the business community was engaged to raise awareness of cybercrime issues. These efforts resulted in a significant increase in the number of cyber-related investigations conducted by his office.

    During his tenure as the United States Attorney, Walt oversaw his office’s efforts in the successful health care fraud initiative. This initiative resulted in dozens of lengthy prison sentences, as well as judgments and restitution orders totaling tens of millions of dollars.

    Walt led his civil division in using the civil process to combat health care fraud, protect the interests of the United States, forfeit criminal proceeds, and collect millions of dollars in criminal and civil judgments for the victims of crime, the U.S. Treasury, and various agencies.

    Prior to becoming the United States Attorney, Walt served as an Assistant United States Attorney (AUSA) in Las Vegas, Nevada.

    Military Experience

    Walt began his professional career with the United States Marine Corps and has held numerous positions within the military, including serving as a judge advocate, instructor, operations officer and officer-in-charge. He has significant overseas military experience which includes two tours of duty in Iraq. During his first tour of duty in 2004, he was the legal advisor for the Seventh Marine Regiment. In that capacity, he advised the command on the rules of engagement and international law during combat operations, including the First Battle of Fallujah. Walt returned to Iraq in 2007, where he supervised six Assistant United States Attorneys, and four judge advocates regarding 13 international criminal law investigations. Notably, he advised the Iraqi prosecutors during the genocide and crimes against humanity trial of Ali Hassan al-Majid (Chemical Ali) and other regime members.

    His military awards include the Combat Action Ribbon, Defense Meritorious Service Medal, Meritorious Service Medal, Navy-Marine Corps Commendation Medal (third award) and the Navy-Marine Corps Achievement Medal (third award).

    Walt also advises domestic companies on compliance with U.S. data privacy laws, including the California Privacy Rights Act and other states’ data regulations. He helps multinational companies stay on top of the European Union’s General Data Protection Regulation and China’s Personal Information Protection Law.

    In addition to his cybersecurity practice, Walt defends doctors, nurses, health care systems and health care executives in civil and criminal health care investigations. He's also a member of the firm's Diversity and Inclusion Committee.

    Since entering private practice, Walt has been a sought-after speaker and commentator on fraud, cybersecurity and data privacy issues, in BBC News, The Economist, The Washington Post, USA Today, CNN Money, and the Associated Press. Walt also earned a spot on the National Law Journal's 2017 Cybersecurity and Data Privacy Trailblazer's list, a list which highlights the top 25 attorneys who have helped make a difference in the fight against criminal cyber activity.

    United States Department of Justice Experience

    As the United States Attorney, Walt served as the chief federal law enforcement officer over nine parishes. In this capacity, he was responsible for prosecuting federal crimes including crimes related to terrorism, public corruption, cybercrimes, health care fraud, financial crimes, human trafficking, child exploitation and drug trafficking networks. Walt also defended the United States in civil cases, collected debts owed to the United States, and chaired the United States Attorney General’s Advisory Council’s Service Members and Veterans Working Group.

    While simultaneously serving as the Executive Director for the National Center for Disaster Fraud, Walt worked with local federal and state law enforcement agencies to investigate, and ultimately, refer credible leads regarding fraudulent activities associated with national disasters to law enforcement agencies nationwide. Such disasters included Superstorm Sandy and Deepwater Horizon (BP Oil Spill).

    Walt also created and led the Middle District of Louisiana’s innovative cybersecurity initiative: a comprehensive effort to increase awareness of cyber issues, better protect potential victims in the District, and take a more aggressive approach to initiating criminal investigations and prosecutions of cybercrimes. Under his leadership, relationships developed among the Middle District’s federal, state and local law enforcement partners, a new law enforcement working group was established to proactively address and combat cyber threats, and the business community was engaged to raise awareness of cybercrime issues. These efforts resulted in a significant increase in the number of cyber-related investigations conducted by his office.

    During his tenure as the United States Attorney, Walt oversaw his office’s efforts in the successful health care fraud initiative. This initiative resulted in dozens of lengthy prison sentences, as well as judgments and restitution orders totaling tens of millions of dollars.

    Walt led his civil division in using the civil process to combat health care fraud, protect the interests of the United States, forfeit criminal proceeds, and collect millions of dollars in criminal and civil judgments for the victims of crime, the U.S. Treasury, and various agencies.

    Prior to becoming the United States Attorney, Walt served as an Assistant United States Attorney (AUSA) in Las Vegas, Nevada.

    Military Experience

    Walt began his professional career with the United States Marine Corps and has held numerous positions within the military, including serving as a judge advocate, instructor, operations officer and officer-in-charge. He has significant overseas military experience which includes two tours of duty in Iraq. During his first tour of duty in 2004, he was the legal advisor for the Seventh Marine Regiment. In that capacity, he advised the command on the rules of engagement and international law during combat operations, including the First Battle of Fallujah. Walt returned to Iraq in 2007, where he supervised six Assistant United States Attorneys, and four judge advocates regarding 13 international criminal law investigations. Notably, he advised the Iraqi prosecutors during the genocide and crimes against humanity trial of Ali Hassan al-Majid (Chemical Ali) and other regime members.

    His military awards include the Combat Action Ribbon, Defense Meritorious Service Medal, Meritorious Service Medal, Navy-Marine Corps Commendation Medal (third award) and the Navy-Marine Corps Achievement Medal (third award).

    Experience

    • Represented defendants, including health care providers, municipalities, and law enforcement agencies in several cyber class actions.
    • Served as lead counsel or co-counsel in over 27 federal jury trials and 16 non-jury federal trials.
    • Audited privacy policy and provided Children's Online Privacy Protection Act compliance-related materials for an online company with millions of subscribers worldwide.
    • Successfully represented national company in an Unfair Trade Practices investigation by a state agency that resulted in no action taken by that agency.
    • Coordinated an international investigation regarding a cyber extortion matter that originated in Eastern Europe.
    • Coordinated a multilayered threat investigation against a CEO which included personal protection and electronic countermeasures.
    • Successfully represented three entities in responding to a California Attorney General’s investigation of the agencies’ data security and privacy practices that resulted in no enforcement action.   
    • Coordinated a multilayered threat investigation against a CEO which included personal protection and electronic countermeasures.
    • Successfully represented three entities in responding to a California Attorney General’s investigation of the agencies’ data security and privacy practices that resulted in no enforcement action.   

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    Recognition

    • Cybersecurity and Data Privacy Trailblazer, National Law Journal (2017)
    • Chambers USA: America’s Leading Lawyers for Business - White-Collar Crime & Government Investigations (2024)
    • Commercial Litigation (2021-2025), Criminal Defense: White Collar (2021-2025), Privacy and Data Security Law (2023), "Lawyer of the Year" Criminal Defense: White Collar (2023), The Best Lawyers in America
    • Capital Region 500, Greater Baton Rouge Business Report (2023-2024)
    • Cybersecurity and Data Privacy Trailblazer, National Law Journal (2017)
    • Chambers USA: America’s Leading Lawyers for Business - White-Collar Crime & Government Investigations (2024)
    • Commercial Litigation (2021-2025), Criminal Defense: White Collar (2021-2025), Privacy and Data Security Law (2023), "Lawyer of the Year" Criminal Defense: White Collar (2023), The Best Lawyers in America
    • Capital Region 500, Greater Baton Rouge Business Report (2023-2024)

    Education

    • Tulane University Law School, J.D., 1993
    • Louisiana State University, B.A., Economics, 1989
    • Tulane University Law School, J.D., 1993
    • Louisiana State University, B.A., Economics, 1989

    Credentials

    • Louisiana
    • Georgia
    • Navy-Marine Corps Court of Criminal Appeals
    • U.S. Court of Appeals for the Armed Forces
    • U.S. Court of Appeals for the Fifth Circuit
    • U.S. Court of Appeals for the Ninth Circuit
    • U.S. District Court, District of Nevada
    • U.S. District Court, Eastern District of Louisiana
    • U.S. District Court, Middle District of Louisiana
    • U.S. District Court, Western District of Louisiana
    • Louisiana
    • Georgia
    • Navy-Marine Corps Court of Criminal Appeals
    • U.S. Court of Appeals for the Armed Forces
    • U.S. Court of Appeals for the Fifth Circuit
    • U.S. Court of Appeals for the Ninth Circuit
    • U.S. District Court, District of Nevada
    • U.S. District Court, Eastern District of Louisiana
    • U.S. District Court, Middle District of Louisiana
    • U.S. District Court, Western District of Louisiana

    Memberships and Affiliations

    Professional

    • Louisiana State Bar Association
    • Baton Rouge Bar Association
    • Federal Bar Association - National FBA Government Relations Board Member (2017-2019)
    • National Association of Former United States Attorneys
    • International Association of Defense Counsel 

    Civic

    • Crime Stoppers - Board Member
    • Tulane School of Professional Advancement for Computing & Technology - Advisory Board Member 
    • LSU Ole War Skule - Board Member
    • USS Kidd Foundation - Board Member
    • Parish of East Baton Rouge HeadStart Policy Council - Board Member
    • InfaGard
    • Baton Rouge Area Foundation
    • Manship Theatre
    • American Inns of Court - The Dean Henry George McMahon Chapter (2015-2017)

    Professional

    • Louisiana State Bar Association
    • Baton Rouge Bar Association
    • Federal Bar Association - National FBA Government Relations Board Member (2017-2019)
    • National Association of Former United States Attorneys
    • International Association of Defense Counsel 

    Civic

    • Crime Stoppers - Board Member
    • Tulane School of Professional Advancement for Computing & Technology - Advisory Board Member 
    • LSU Ole War Skule - Board Member
    • USS Kidd Foundation - Board Member
    • Parish of East Baton Rouge HeadStart Policy Council - Board Member
    • InfaGard
    • Baton Rouge Area Foundation
    • Manship Theatre
    • American Inns of Court - The Dean Henry George McMahon Chapter (2015-2017)
    • Overview
    • Experience
    • Insights
    • Recognition
    • Education
    • Credentials
    • Memberships and Affiliations

    Related Services

    • White Collar Defense and Investigations
    • Litigation
    • Cybersecurity, Privacy and Data Protection
    • ESG
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