Alexander H. Southwell - Gibson Dunn LLP
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Alexander H. Southwell

Listed in Best Lawyers since 2013

Alexander H. Southwell is a partner in Gibson, Dunn & Crutcher’s New York office.  His practice focuses in two main areas:  first, white-collar criminal and regulatory enforcement defense, internal investigations, compliance monitoring, and complex civil litigation; and, second, information technology and data privacy-related investigations, counseling, and litigation.  Mr. Southwell is a Co-Chair of Gibson Dunn’s Information Technology and Data Privacy Practice Group and is also a member of the White Collar Defense and Investigations, Crisis Management, Securities Enforcement, and Litigation Practice Groups.  Prior to joining Gibson Dunn, Mr. Southwell served as an Assistant United States Attorney in the United States Attorney’s Office for the Southern District of New York.

Mr. Southwell is an experienced trial and appellate attorney and regularly represents corporate executives and individuals in connection with white-collar criminal investigations and prosecutions by federal and state prosecutors as well as related civil investigations by a wide range of regulators.  Mr. Southwell also regularly represents companies and boards in these types of matters and has significant experience in conducting internal corporate investigations and compliance monitoring.  Substantively, his areas of expertise include securities and accounting fraud, economic sanctions violations, money laundering and Bank Secrecy Act violations, tax fraud, the False Claims Act and contracting fraud, health care fraud and compliance, the Computer Fraud and Abuse Act, the Foreign Corrupt Practices Act, the Economic Espionage Act, and public corruption, among others.  Additionally, Mr. Southwell counsels a variety of clients on privacy, information technology, data breach, theft of trade secrets and intellectual property, computer fraud, national security, and network and data security issues, including handling investigations, enforcement defense, and litigation.

Mr. Southwell is honored in the 2014 editions of Benchmark Litigation as a future star and The Best Lawyers in Americaas a leading lawyer in the area of Criminal Defense:  White-Collar.

Mr. Southwell is also an Adjunct Professor of Law at Fordham University School of Law where he teaches a seminar on cyber-crimes, covering computer misuse crimes, intellectual property offenses, the Fourth Amendment in cyber-space, computer evidence at trial, data breach and privacy issues, and information security, among other areas.

Mr. Southwell earned his undergraduate degree, magna cum laude, from Princeton University and his Juris Doctor, magna cum laude, from New York University School of Law.  Following law school, Mr. Southwell was a Law Clerk for the Honorable Naomi Reice Buchwald of the United States District Court for the Southern District of New York.

Mr. Southwell also serves on the Firmwide Diversity Committee and is active with the Federal Bar Council and the Association of the Bar of the City of New York, serving on the Association’s Professional Responsibility Committee and previously serving on the Committee on Information Technology Law and the Government Ethics Committee.
Prior to joining Gibson Dunn, Mr. Southwell served as an Assistant United States Attorney in the United States Attorney’s Office for the Southern District of New York from 2001 through 2007.  As a member of that office's Securities and Commodities Fraud Task Force for three years, Mr. Southwell investigated and prosecuted a wide range of cases under the federal securities laws, including accounting fraud, insider trading, fraudulent offering of securities, market manipulation, and hedge fund improprieties.  Mr. Southwell also focused on investigating and prosecuting computer hacking and intrusion cases and intellectual property offenses, as well as other high-technology offenses.  Additionally, Mr. Southwell prosecuted a range of cases including wire and mail frauds, insurance fraud, public corruption, Foreign Corrupt Practice Act violations, bank secrecy act violations, identity theft, firearms crimes, tax offenses, child exploitation, and immigration crimes.  As a federal prosecutor, Mr. Southwell tried a dozen felony cases and handled over a dozen appeals before the Second Circuit Court of Appeals. 

New York UniversityJ.D. Princeton UniversityBA

Office Location

200 Park Avenue
New York, NY 10166-0193
United States

Practice Areas

Criminal Defense: White-Collar