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Abraham J. Rein


  • New York University School of Law (J.D., 2007)
  • Bard College (B.A. in Sociology, 1996)

Bar Memberships

  • Pennsylvania

Court Admissions

  • U.S. Supreme Court
  • Supreme Court of Pennsylvania
  • U.S. District Court for the Eastern District of Pennsylvania
  • U.S. Court of Appeals, Third Circuit


  • American Bar Association, Section of Litigation
  • Pennsylvania Bar Association
  • Philadelphia Bar Association
  • Federal Bar Association Criminal Law Committee

Abraham J. Rein

Co-Chair, Information Privacy & Security Practice



(215) 587-1057

(215) 320-4194 Fax

Abraham J. Rein is a Principal in the Firm's Internal Investigations & White Collar Defense Group, Co-Chair of its Information Privacy & Security Group, and a member of the Firm's Diversity Committee. He focuses particularly on the intersection of technology and the law, advising clients on legal aspects of data security, social media compliance, electronic discovery, the application of certain constitutional rights in a digital era, and related topics. Mr. Rein, who co-founded and served as a managing partner of a web development firm prior to his career in law, brings a keen understanding of the internet and technology to his practice.  Along with White Collar Practice Group Chair Ron Levine, Mr. Rein was part of the team that won the groundbreaking Facebook speech case, United States v. Elonis, in the Supreme Court of the United States.

Mr. Rein defends clients in a broad spectrum of industries, including health care, pharmaceutical, medical device, hospitality, insurance, financial services, securities, communications, defense, and transportation. His work focuses on representing individuals and businesses facing government scrutiny, ranging in scope from securities regulation to insider trading, tax, immigration, False Claims Act, and complex regulatory matters. He also assists companies with internal investigations, whether prompted by a government inquiry, a purported whistleblower, or otherwise.

Mr. Rein is an Adjunct Professor at Drexel University's Thomas R. Kline School of Law, teaching the course "Information Privacy Law" in the school's Master of Legal Studies concentration, and graduate certificate program, in Cybersecurity and Information Privacy Compliance.

In 2016, Mr. Rein was honored by the Pennsylvania Association of Criminal Defense Lawyers (PACDL) with the Alan Jay Josel Advocacy Award for his work on the Elonis case. In 2017 and 2018, he was named a Rising Star by Pennsylvania Super Lawyers in the category of Criminal Defense: White Collar. In 2019, he was named a Pennsylvania Super Lawyer in the same category. The Best Lawyers in America© recognized Mr. Rein in its 2020 edition in the category of Criminal Defense: White-Collar. For information about these selections and an overview of common third-party publications, rankings, and lists methodologies, click here.

He dedicates a portion of his practice to helping the underserved. In addition to assisting in the representation of indigent defendants under the Criminal Justice Act, Mr. Rein has provided pro bono representation to Guantanamo Bay detainees (for which he was recognized, along with a group of Philadelphia attorneys, with the Federal Bar Association Criminal Law Committee's Clifford Scott Green Bill of Rights Award), homeless litigants, and prisoners pursuing civil rights claims.

Mr. Rein studied at New York University School of Law, where he graduated cum laude and served as Articles Editor for the Journal of Legislation and Public Policy. After law school, Mr. Rein spent three years as a litigator for a Philadelphia-based national law firm.