About ZwillGen

Welcome to the ZwillGen PLLC blog, offering the perspective of experienced Internet Lawyers on breaking legal issues in the technology sphere.

For over 13 years, ZwillGen lawyers have investigated, litigated and counseled on a wide-range of internet issues including cybercrime, information security, privacy, surveillance, subpoena compliance, online marketing, behavioral advertising, internet gambling, satellite and videogame piracy, intellectual property theft, and more. Having worked as federal prosecutors and run practice groups at the nation’s largest law firms, the founders of ZwillGen can bring to bear years of experience helping the nation’s most reputable Internet companies address their highest profile issues while offering competitive pricing that allows the firm to efficiently handle day-to-day legal concerns. This is their blog.

Information on the ZwillGen practice including attorney bios, areas of expertise, pricing options, and much more can be found on the official website www.zwillgen.com.

Zwillgen Blog Contributors

Alexei Klestoff


Alexei Klestoff’s practice focuses on representing clients in a variety of privacy, consumer protection, and e-commerce matters through counseling, litigation, responding to FTC and state Attorneys General investigations, and developing compliance programs. Alexei advises clients on methods to mitigate legal risks associated with new products and services, and also represents clients in complex litigation and regulatory investigations involving false advertising, unfair competition, and privacy claims.

Anna Hsia


Anna Hsia maintains a diverse practice litigating complex business disputes and counseling clients on privacy issues. With broad litigation experience in unfair competition, false advertising, class actions, and other complex litigation, Anna guides clients through disputes in federal and state courts. As a Certified Information Privacy Professional, Anna has assisted clients with product development and compliance with privacy regulations such as the TCPA, HIPAA, COPPA, state-specific privacy regulations, the Gramm-Leach-Bliley Act, and the Fair Credit Reporting Act.

Ariel Oxman


Ariel is a Fellow as ZwillGen. Prior to joining ZwillGen, she served as an Oversight Fellow with Senator Elizabeth Warren. Alongside the Senator’s Oversight and Investigations staff, Ariel drafted letters and created staff reports to question government agencies and private corporations on alleged illegal conduct or fraud concerning data breaches, consumer protection, and Executive Branch conflicts of interest.

Bart Huff


Bart's practice focuses on representing clients on many areas related to online content and services, including criminal and internal investigations, internet privacy and security litigation, theft of trade secrets, compliance obligations relating to the use and disclosure of customer and subscriber information, and gaming law. Before ZwillGen, Bart was an AUSA in Chicago, prosecuting federal crimes including white collar fraud, securities and other regulatory violations, and computer and internet related crimes. Bart tried 18 jury trials and briefed and argued numerous appeals before the Seventh Circuit.

Daniel de Zayas


Daniel was a Legal Intern at ZwillGen in the summer of 2019.

Jake Sommer


Jacob Sommer's practice focuses on legal issues related to Internet-based services and social networking, with a focus on protecting client's rights in litigation or government investigations involving the Copyright Act, Lanham Act, Digital Millennium Copyright Act ("DMCA"), Electronic Communications Privacy Act (“ECPA”), the Wiretap and Communication Acts, CAN-SPAM, FISA and federal and state laws governing Internet gambling. He also helps social networks, search engines, e-mail providers, ISPs and other clients fulfill their compliance obligations pertaining to the discovery and disclosure of customer and subscriber information.

Jason Wool


Jason Wool’s practice focuses on cybersecurity, including cyber risk management, incident response, and compliance with global data protection laws, regulations, and standards, including the PCI-DSS. He has advised organizations ranging from small businesses to Fortune 500 companies during complex, privileged computer crime investigations; provided ongoing advice on the development of cybersecurity programs and cybersecurity governance structures; conducted tabletop exercises and other data breach simulations; and assisted clients with large scale audits to determine compliance with complex cybersecurity standards.

Jeff Landis


Jeff’s practice focuses on representing clients in litigation and government investigations, with a particular focus on defending companies in complex class action lawsuits. He also assists clients in responding to formal investigations and informal inquiries conducted by the FTC, DOJ and states’ Attorney General Offices. Jeff has extensive experience in all aspects of civil litigation, including serving as trial counsel for both plaintiffs and defendants in matters pending before judges, juries, and arbitration panels.

Jon Frankel


Jon Frankel has been advising clients on privacy, data security, e-commerce, intellectual property and litigation matters for more than 15 years. Jon provides practical advice to mitigate privacy and data security risks and helps clients navigate a myriad of complex data collection, use and sharing cases. Jon advises on health and children’s privacy; email, SMS and telemarketing; mobile applications; user generated content; contests, promotions, and sweepstakes, online gaming; and requests from law enforcement. Prior to joining ZwillGen, Jon was a partner in the Washington, D.C. office of Bingham McCutchen, LLP, where he co-chaired the Privacy and Security Group.

Kandi Parsons


Kandi counsels clients on privacy and data security issues, online and general advertising, and marketing practices, including COPPA compliance, student privacy, and the Internet of Things. Kandi advises companies on collecting, protecting, and using consumer data and helps them develop and implement comprehensive privacy and security programs. Drawing on her tenure at the FTC, Kandi assists clients in responding to FTC and state AG enforcement actions. Prior to joining ZwillGen, Kandi spent eight years in the FTC’s Division of Privacy and Identity Protection. While at the FTC, Kandi served on detail for six months to the United States Senate, Committee on Commerce, Science, and Transportation.

Ken Dreifach


Ken counsels clients on complex issues involving information privacy and data law, online liability, consumer regulatory and gaming law, including regulatory response, and adherence to self-regulatory guidelines for online advertising. Ken has had more than twenty years of experience in high-profile regulatory, in-house and private practice roles, including as Chief of the New York Attorney General’s Internet Bureau. He is one of the nation’s leading authorities on the relationship between emerging advertising technologies and online privacy.

Lisa Page


Lisa Page has more than a dozen years of federal law enforcement experience. A former federal prosecutor, Lisa prosecuted organized crime cases before joining the FBI’s Office of General Counsel, where she handled sensitive and complex national security matters. She ultimately served as the Special Counsel to the Deputy Director, assisting him in running the FBI’s day-to-day operations.

At ZwillGen, Lisa advises clients on demands for user data in criminal, civil, and national security matters, leads internal investigations, conducts law enforcement outreach on behalf of tech companies, and helps prepare company witnesses for testimony and trial.

Marc Zwillinger


Marc is the founder and managing member of ZwillGen PLLC and has been regularly providing advice and counsel on issues related to the increasingly complex laws governing Internet practices, including issues related to Electronic Communications Privacy Act (“ECPA”), the Wiretap and Communication Acts, privacy, CAN-SPAM, FISA, spyware, adware, Internet gambling and adult-oriented content. He also helps Internet Service Providers and other clients comply with their compliance obligations pertaining to the discovery and disclosure of customer and subscriber information.

Marci Rozen


Marci counsels companies on a wide variety of issues involving privacy, cybersecurity, and information law. She routinely helps companies evaluate and develop corporate privacy and information security programs, and provides advice on matters involving cross-border data transfers, insider threat prevention and detection, cloud computing, and electronic surveillance. Marci also assist clients in responding to data breaches, including issuing breach notifications required under state and federal breach notification laws, advising on remediation efforts, and handling litigation and enforcement actions arising from data security incidents.

Marielena Reyes


Prior to joining ZwillGen, Marielena served as a law clerk for NTIA at the Department of Commerce and the Cybersecurity and Communications Reliability Division at the FCC, where she worked with attorneys on issues related to consumer privacy, data protection, 5G deployment, international and domestic compliance issues, and emerging technologies. In addition, Marielena worked for American University’s Gluskko-Samuelson Intellectual Property Law Clinic, where she drafted privacy policies and terms of use agreements for nonprofit organizations and startups.

Mason Weisz


Mason helps clients navigate a constantly shifting web of domestic and international laws regulating data collection, marketing, data sharing, computer crime, data security, electronic surveillance, online content, children’s privacy, financial privacy, information management, and other areas of privacy and Internet law. A former web designer, he has extensive experience with issues relating to digital media, new technology and e-commerce.

Melissa Maalouf


Melissa Maalouf’s practice focuses on advising a broad range of clients, from start-ups to established companies, on both U.S. and international data privacy and security issues. Melissa assists clients in drafting appropriate website disclosures, implementing legally-compliant e-commerce flows, responding to FTC Section 5 and state AG enforcement actions, analyzing advertising claims, and children’s online privacy and safety issues. She also regularly helps clients obtain certification under the EU-US Safe Harbor and navigate compliance with divergent international privacy laws.

Michelle Anderson


Michelle Anderson counsels clients on a range of privacy, security, and consumer protection matters. She works closely with clients to understand their goals and risk profiles to help develop strategies for compliance with domestic and international privacy and security laws and regulations.

Nick Jackson


Nick’s practice focuses on representing clients in complex litigation in federal and state courts, including the defense of class action lawsuits. Nick has represented clients in matters involving federal privacy statutes, constitutional privacy rights, intellectual property, contractual disputes, and federal and state securities laws. He also assists clients in responding to investigations by federal and state regulators, as well as handling demands for user data. In addition, he has counseled clients on the privacy, intellectual property and litigation-related aspects of significant commercial transactions.

Nur Lalji


Prior to joining ZwillGen, Nur attended Georgetown University Law Center, where she served as a research assistant for the Georgetown Center on Privacy & Technology and as the Senior Legal News Editor for the Georgetown Law Technology Review. She also participated in the Law Center’s Federal Legislation Clinic, where she worked in conjunction with MIT students to develop novel privacy legislation.

Nury Siekkinen


Nury's practice focuses on litigating complex commercial cases in federal, state, and bankruptcy courts, including defending companies against class action lawsuits. She has represented clients in matters involving the Electronic Communications Privacy Act (“ECPA”), the Video Privacy Protection Act (“VPPA”), Michigan Video Rental Privacy Act (“VRPA”), the Illinois Biometrics Information Privacy Act (“BIPA”), and state privacy and unfair competition laws. Nury also advises clients on matters related to overseas litigation and foreign criminal investigations.

Plamena Gerovska


Prior to joining ZwillGen, Plamena served as a Privacy Analyst at Promontory Financial Group, an IBM company, where she assisted attorneys on compliance with the EU General Data Protection Regulation (“GDPR”), Russian data localization laws and other international privacy laws. Before that, Plamena spent a summer interning at different London law firms supporting the technology teams on issues related to the UK data protection laws and international data transfers.

Stacey Brandenburg


Stacey advises clients on a wide range of privacy and data security issues. A veteran of the Federal Trade Commission’s Division of Privacy and Identity Protection, Stacey assists clients in responding to FTC investigations involving potential violations of Section 5 of the FTC Act, the FTC’s advertising guidelines, and the Children’s Online Privacy Protection Act (COPPA). She also helps clients respond to investigations by State Attorneys General. Stacey helps clients implement sound security and privacy practices and provides compliance training to employees. Stacey is on the faculty at American University’s Washington College of Law, where she teaches on technology and privacy-related issues.

Zach Lerner


Zach Lerner’s practice focuses on a variety of legal matters impacting Internet-based companies. He helps companies in a wide range of industries including education technology, financial technology, unmanned aerial vehicles, and fantasy sports with issues related to privacy, e-commerce, and advertising.

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