Photograph of Paul M. Rosen

Government Experience

  • Department of Homeland Security—Chief of Staff (2015-2017); Deputy Chief of Staff (2014-2015); Senior Counselor (2014); Chief of Staff, U.S. Immigration and Customs Enforcement (2013-2014)
  • Department of Justice: Criminal Division—Trial Attorney, Fraud Section (2011-2013)
  • Department of Justice: United States Attorneys' Offices—Eastern District of Virginia: Special Assistant U.S. Attorney (2010-2011)
  • Department of Justice: Criminal Division—Counsel to the Assistant Attorney General (2009-2010)
  • United States Senate—Counsel to Senator Joseph R. Biden, Jr., Senate Judiciary Committee (2006-2009)


  • University of Colorado at Boulder, B.A. (2000) summa cum laude, Phi Beta Kappa
  • University of Southern California, Gould School of Law, J.D. (2005) Order of the Coif


  • Admitted in California Only
  • Practicing under the Supervision of D.C. Bar Members

Paul Rosen In the News

View all news items.

Data, Data Everywhere – Positioning Your Company to Survive and Thrive in the Data Revolution

Click to read this article from
Crowell & Moring's Litigation Forecast 2018

Litigation Forecast 2018

Paul M. Rosen, Partner Los AngelesWashington, D.C.
Phone: +1 213.443.5577
515 South Flower St., 40th Floor
Los Angeles, CA 90071-2201
Phone: +1 202.624.2500
1001 Pennsylvania Avenue NW
Washington, DC 20004-2595

Paul Rosen is a partner in the firm’s White Collar & Regulatory Enforcement, Privacy & Cybersecurity, and Government Contracts groups. Paul is a former federal prosecutor and was most recently the chief of staff at the Department of Homeland Security.

With more than a decade of legal, policy, and management experience across all three branches of government, Paul represents corporate and individual clients in connection with federal and state government investigations and enforcement actions, internal investigations, cybersecurity and data privacy, immigration and cross border issues, national security, and litigation matters. Paul also counsels clients on all aspects of managing a crisis to mitigate legal exposure in criminal, civil, regulatory, administrative, transactional, and Congressional matters.

Representative Matters

  • Securing a declination from DOJ of a senior executive at a large global financial institution in connection with a criminal investigation associated with a complex foreign exchange (FX) transaction.
  • Representation of a government contractor with worldwide operations facing a various government investigations, including by a Congressional committee, in to alleged improper activities in the course of executing its contract.
  • Representation of an individual in connection with DOJ’s criminal investigation into automobile manufacturing practices that circumvented emissions standards and tests.
  • Counseling a global technology company that suffered a ransomware attack and advising on the potential legal and business impacts associated with the attack.
  • Advising a former cabinet officer in connection with testimony before Congressional committees investigating activities associated with the 2016 U.S. presidential election.
  • Advising a global cloud computing company on appropriate security procedures and processes to safeguard datacenters that house servers and other sensitive equipment.

Professional Background

Prior to joining Crowell & Moring, Paul served in several senior leadership roles within the DHS, including most recently as chief of staff. In this role, Paul managed for the secretary the operational, organizational, policy, and legal needs for the third-largest department of government, with 230,000 employees, a $60 billion budget, and 22 component agencies. Among the agencies he oversaw included the National Protection and Programs Directorate, Customs and Border Protection, Secret Service, Transportation Security Administration, Immigration and Customs Enforcement, Domestic Nuclear Detection Office, Federal Emergency Management Agency, and U.S. Coast Guard, among others.

Paul supervised DHS’s response to some of the most sensitive and complex challenges facing the government, including civil and criminal investigations and litigation, regulatory matters, Congressional oversight, public relations, and crisis management. He advised the secretary and the White House on counterterrorism; cyber, data security, and incident response; border, aviation, and maritime security; trade and customs violations; immigration and visa policies; nuclear weapons detection; national security risks associated with foreign investments in connection with the Committee on Foreign Investment in the United States, or CFIUS; federal disaster response; critical infrastructure; financial crimes; and other criminal law enforcement matters.

In recognition of his work, the secretary awarded Paul the DHS Distinguished Service Medal, the highest honor bestowed by the secretary to recognize exceptional and transformational public service. He is also a recipient of the Director’s Distinguished Service Award from the Secret Service.

Paul has worked extensively with other federal agencies, including the Departments of Justice, Treasury, and Defense, the FBI, and intelligence agencies on some of the most highly publicized global security and terrorist threats, including:

  • Significant cybersecurity events, such as hacking activities in the lead-up to the 2016 U.S. Presidential election, the hack of the U.S. Office of Personnel Management, and attacks on critical infrastructure.
  • The government’s response to the surge of unaccompanied children and families crossing the U.S. border in 2014.
  • The Orlando, Brussels, Chattanooga, San Bernardino, Paris, and Egypt Air terror attacks.
  • Manned and unmanned aerial vehicles, or drones, penetrating restricted airspace in Washington, D.C. and elsewhere.
  • National security threats posed by the Zika and Ebola virus outbreaks.
  • The investigation and extradition of high profile international fugitives from a variety of countries.
  • The threat posed by ISIS and U.S. efforts to disrupt their activities overseas and in the United States.

At DHS, Paul also served as deputy chief of staff and senior counselor, and chief of staff at U.S. Immigration and Customs Enforcement.

In addition to his work on national and border security, Paul served for more than four years at the U.S. Department of Justice, including as a federal prosecutor in the U.S. Attorney’s Office for the Eastern District of Virginia and in the Department of Justice Criminal Fraud Section. He prosecuted financial crimes by companies and individuals, including securities fraud, bank and mortgage fraud, FCPA, money laundering, insider trading, corruption, bankruptcy fraud, and government and procurement fraud. During this time, he:

  • Led an international FCPA investigation of a Fortune 100 global technology company for alleged payment of bribes to foreign government officials across four continents.
  • Led the investigation of a $28 million real estate developer mortgage fraud scheme concerning activities that contributed to the 2008 financial crisis.
  • Co-led the criminal investigation into potential insider trading and securities fraud of individuals and a Fortune 200 technology company.
  • Co-led the investigation and prosecution of individuals for masterminding a sophisticated nationwide foreclosure-rescue and bankruptcy fraud scheme.
  • Co-led the investigation of a major bank failure, which after trial resulted in convictions for conspiracy, securities fraud, and other corporate fraud.
In addition to working with federal partners, during his time in government Paul also worked with state and local law enforcement and State Attorneys General on a range of enforcement related matters.

In recognition of his work, in 2012 the Council of Inspectors General on Integrity and Efficiency recognized Paul with its Investigations Award for Excellence.

From 2006 to 2009, Paul served as counsel to then-U.S. Senator Joseph R. Biden, conducting oversight investigation and advising on civil and criminal law policies and legislation confronting the Senate Judiciary Committee, including intellectual property rights, antitrust and bankruptcy law, narcotics and firearms laws and the federal sentencing guidelines. Previously, he was a law clerk to the Honorable Gary Allen Feess, U.S. District Judge for the Central District of California.

Paul is a guest lecturer and speaker at Harvard’s John F. Kennedy School of Government and at the University of Southern California’s Gould School of Law and undergraduate college. He is also a Homeland Security Project fellow at Harvard's Belfer Center for Science and International Affairs. He is a member of the California Bar and the Pacific Council on International Policy.


Admitted to practice: California, U.S. District Court for the Central District of California, U.S. Court of Appeals for the Ninth Circuit

Admitted in California Only; Practicing under the Supervision of D.C. Bar Members.


  • Cybersecurity & Data Privacy Trailblazer, The National Law Journal, 2017
  • Cyber Security Attorney of the Year, Leaders in Law Award, Los Angeles Business Journal, 2017
  • Distinguished Service Medal, U.S. Department of Homeland Security, 2017
  • Director’s Distinguished Service Award, U.S. Secret Service, 2017
  • Investigative Award of Excellence, Council of Inspectors General on Integrity and Efficiency, 2012

Professional Activities and Memberships

  • Co-Chair, ABA Section of Science & Technology Law, Homeland Security Committee
  • Pacific Council on International Policy, Member
  • Guest Lecturer, "Mitigating and Managing a Crisis," John F. Kennedy School of Government, Harvard University, 2017
  • Fellow, Harvard Kennedy School, Belfer Center for Science and International Affairs, The Homeland Security Project
  • Federal Bar Association, Member
  • Co-Chair, Science & Technology Section, Homeland Security Committee, American Bar Association
  • Member, White Collar Crime Committee, American Bar Association

Speeches & Presentations

  • "Navigating Government Involvement During a Cyber Incident," ACC Foundation Cybersecurity Summit, Washington, D.C. (February 6, 2018). Panelist: Paul M. Rosen.
  • "Tracking Global Threats: The Role of the Intelligence Community," Pacific Council on International Policy, Los Angeles, CA (January 30, 2018). Moderator: Paul M. Rosen.
  • "Legal Ethics and Protecting Information from Cyber Attacks and Breaches," ABTL Lunch and Program, Los Angeles, CA (January 24, 2018). Presenter: Paul M. Rosen.
  • "Targeting the Corporate Crown Jewels: A View from In-House Counsel," FBI/Fordham University International Conference on Cyber Security, New York, NY (January 11, 2018). Moderator: Paul M. Rosen.
  • "The New Normal of Cyber Threats: Protecting Content in the Digital Age," Content Protection Summit 2017, Los Angeles, CA (December 6, 2017). Speaker: Paul M. Rosen.
  • "Consumer Protection: The Challenge of Achieving Regulatory Compliance and Meeting Customer Expectations," The 26th Annual National Seattle Conference on Cutting Edge Issues in Technology Law, Seattle, WA (December 1, 2017). Panelist: Paul M. Rosen.
  • "Cybersecurity for Contractors," Government Contracts "101" - Back to Basics, Washington, D.C. (October 26, 2017). Presenters: Paul M. Rosen, Evan D. Wolff and Kate M. Growley.
  • "Crisis Management: Prevention, Containment, and Survival," 2017 ISOA Annual Summit, Washington, D.C. (October 18, 2017). Panelist: Paul M. Rosen.
  • "Cyberwar: What the New Threat Landscape Means for Media and Broadcast," International Broadcasting Convention 2017, Amsterdam, Netherlands (September 15, 2017). Keynote Speaker and Presenter: Paul M. Rosen.
  • "Risk Management Keynote," 2017 Financial Services Expo, Irving, Texas (August 2, 2017). Speaker: Paul M. Rosen.
  • "The Future of Cybersecurity Policy in a Post-Trump America," Black Hat CISO Summit, Las Vegas, NV (July 25, 2017). Speaker: Paul M. Rosen.
  • "What Trump Means for Business," Crowell & Moring Webinar (May 24, 2017). Presenters: Angela B. Styles, W. Scott Douglas, Paul M. Rosen, Evan D. Wolff, Thomas A. Lorenzen, Christine M. Clements, Daniel Cannistra, and David B. Blair.
  • "Hurry-Up Offense: Keeping Pace with Information Security and Privacy," OOPS 2017, Crowell & Moring's 33rd Annual Ounce of Prevention Seminar, Washington, D.C. (May 4, 2017). Presenters: Peter B. Miller, Paul M. Rosen, Evan D. Wolff, and Kate M. Growley.
  • "Information Sharing," Seatrade Cruise Global, Fort Lauderdale, FL (March 2017). Speaker: Paul M. Rosen.
  • "Cyber Security," Seatrade Cruise Global, Fort Lauderdale, FL (March 2017). Speaker: Paul M. Rosen.
  • "Legal Quick Hit: Hacking, Encryption, and Privacy: Where Will a Trump Administration Go?" Association of Corporation Counsels Teleconference (March 2017). Speaker: Paul M. Rosen.
  • "Emerging Threats and Opportunities in Cyber Security: Government and Business Deploy Policies and Infrastructure to Counter Threats," Imperial Capital Security Investor Conference, New York, NY (December 2016). Speaker: Paul M. Rosen.
  • "Swearing-in and Remarks," United States Memorial Holocaust Museum, Washington, D.C (November 2016). Speaker: Paul M. Rosen.
  • "The Insider Threat: Managing Risk in the Digital Age," Luncheon and Roundtable Discussion with Corporate Chief Information Security Officer, New York, NY (October 2016). Speaker: Paul M. Rosen.
  • "Oath of Allegiance and Remarks," Special Naturalization Ceremony, United States Memorial Holocaust Museum, Washington, D.C. (June 2016). Speaker: Paul M. Rosen.


Client Alerts & Newsletters

In the News

Firm News & Announcements

Nov.03.2017 Crowell & Moring's Paul Rosen Recognized as Los Angeles Business Journal's Cyber Security Attorney of the Year and National Law Journal's Cybersecurity & Data Privacy Trailblazer
Sep.18.2017 Crowell & Moring’s Paul Rosen Named a Fall Fellow of The Homeland Security Project at Harvard Kennedy School’s Belfer Center for Science and International Affairs
May.02.2017 Former Homeland Security Chief of Staff and Federal Prosecutor Paul M. Rosen Joins Crowell & Moring as Partner