ZwillGen Appoints Two New Shareholders and Adds Two New Attorneys

NEW YORK, SAN FRANCISCO, and WASHINGTON, DCZwillGen is pleased to announce that two veteran attorneys of its California and New York offices have been newly appointed Shareholders of the Firm. In addition, ZwillGen has added one new attorney in Washington, DC to support its growing International Law Enforcement practice and one new attorney in New York to bolster its privacy capabilities, including privacy due diligence for acquisitions, mergers, and investment transactions.

Anna Hsia has been voted in as a Partner of ZwillGen Law LLP in San Francisco and Mason Weisz has been voted in as a Shareholder in ZwillGen PLLC’s New York office.

“Anna and Mason have become invaluable parts of the Firm and we will be looking to them as leaders to further develop our capabilities on both coasts outside of the Washington, DC office,” said Marc Zwillinger, ZwillGen’s Founder and Managing Member.

Additionally, Liz DeYoung, a former federal prosecutor at the Department of Justice, Criminal Division, Office of International Affairs, has been brought on in Washington, DC to assist the Firm’s growing Law Enforcement practice, especially with regard to working with International Law Enforcement and Cloud Act requests. Also, former Cleary Gottlieb Steen & Hamilton LLP attorney Jane Rosen has joined the Firm’s New York office to assist on privacy-related matters, including evaluating privacy due diligence as it relates to a wide spectrum of transactions ranging from acquisitions to investments.

About the Attorneys

Anna Hsia – Anna counsels clients on product development and privacy issues, and litigates complex business disputes. Her broad clientele includes Bay Area companies in the gig economy, online gaming, cloud computing, advertising, and biotechnology space. Anna has also served as the head of the Firm’s West Coast operations.
View Anna’s Bio >

Mason Weisz – Mason focuses on a wide variety of privacy, security, and Internet issues, with emphasis on helping companies that are subject to both US and European law, including in relation to the California Consumer Privacy Act and EU General Data Protection Regulation. For the past several years, he has led ZwillGen’s international efforts. A former web designer, he has extensive experience with the technology that drives digital media and e-commerce.
View Mason’s Bio >

Liz DeYoung – Liz has more than a decade of combined experience in private and government practice. Liz advises clients regarding demands for user data under ECPA, the CLOUD Act and data localization issues, engagement with law enforcement authorities (both within and outside of the United States), and other matters concerning cross-border access to data. She also provides a range of corporate governance, transactional, and commercial contracting advice to clients.
View Liz’s Bio >

Jane Rosen – Jane’s practice focuses on privacy, data protection, and technology-related issues. As a Certified Information Privacy Professional (CIPP/US), she advises clients on their legal obligations under applicable privacy laws and regulations, as well as strategies for managing compliance and risks. She has a strong background in transactional contexts such as mergers and acquisitions, joint ventures, financings, restructurings, capital markets offerings and various commercial, licensing, and services arrangements.
View Jane’s Bio >

Read Full Release Download the PDF

ZwillGen Launches $100,000 Relief Initiative to Support Furloughed Federal Employees

WASHINGTON, D.C., January 22, 2019 – ZwillGen PLLC launched an initiative today to provide up to $100,000 in relief to federal workers who are affected by the government shutdown. Furloughed federal workers in the D.C., Maryland, and Virginia area can receive no-interest, no-fee loans for up to $500 without a credit check and with generous repayment terms.

To avoid any conflicts of interest, eligible federal workers must work for agencies where ZwillGen does not have any pending business and where the firm is unlikely to have any in the near future. These include agencies such as the EPA, National Park Service, and the TSA, and others to be determined on a case-by-case basis. Federal employees must also make less than $65,000 annually and work in the D.C. area to be eligible.

Interested federal employees should visit:

“We hope the President stops holding federal workers hostage as soon as possible, but in the meantime, we cannot ignore the needs of those in our community who are most affected,” said Marc Zwillinger, ZwillGen’s Founder and Managing Member. “We will do our part to help for as long as the shutdown is in effect.”

ZwillGen estimates that the initiative can help at least 200 people in the D.C. area. The firm invites its clients and other law firms to join this effort by providing additional funding. With more funds the program can support more furloughed workers.

“Our clients also care for those in need,” said Zwillinger. “We invite others who want to help to follow our lead. The opportunity here is simple: with more funds we all can help reduce the impact of this shutdown for more people.”

ZwillGen clients and partners who want to speak with us about this initiative can contact Alli Goings at

Read Full Release Download the PDF

ZwillGen Bolsters Law Enforcement Team, Welcomes Former Oath Attorney Chris Madsen

WASHINGTON, D.C., July 31, 2018 – ZwillGen welcomes longtime friend of the firm and former Oath/Yahoo attorney, Chris Madsen, to ZwillGen as Counsel and Managing Director for ZG Subpoena Solutions (ZGSS).

Chris joins ZwillGen after more than a decade working on law enforcement and security matters in government and in-house at Oath/Yahoo, most recently as Vice President & Chief Counsel for Global Law Enforcement, Security and Safety. While at Oath/Yahoo, Chris led the legal teams responsible for formulation and implementation of law enforcement, data security, and content moderation policies and gained first-hand experience with a panoply of legal and policy issues that companies face with respect to law enforcement, data breaches, and user-generated content.

Chris said, “I am excited to work with ZwillGen and ZGSS to bring innovative solutions to clients that have to respond to government and third-party demands for data. Companies have to adapt to changes in demands for user data, in volume and in type, and keep up with frequently changing law and industry practice. ZG and ZGSS are leaders in this area, with deep experience and connections. I look forward to building on this foundation and adding my own in-house experience to help clients stay on top of these important issues.”

ZwillGen Founder, Marc Zwillinger, stated, “Chris brings valuable perspective and insight gained from years of in-house experience and at the Department of Justice. He has a deep understanding of how to navigate nuanced legal and policy issues, particularly with respect to law enforcement matters. We are very lucky to have him help lead ZGSS.”

Read Full Release Download the PDF

ZwillGen’s Growth Continues: Firm Appoints Two New Shareholders, Two New Practice Chairs, and Adds a Boston Attorney

WASHINGTON, D.C., February 27, 2018 – ZwillGen has appointed two new Shareholders and two new Practice Chairs and has added a new attorney in Boston to support its growing Massachusetts client base.

Melissa Maalouf and Kandi Parsons have been voted in as Shareholders in the Washington, D.C. office. Also in the D.C. office, Jeff Landis has been tapped as the Chair of the litigation team and Mason Weisz is officially leading the international practice from the New York office.

“The contributions that Melissa, Kandi, Jeff, and Mason have made to ZwillGen on the client side have helped raise ZwillGen’s profile as the go-to firm for privacy advice and litigation. The way they thoughtfully approach challenges and propose solutions while anticipating potential regulations has helped clients expand their services and offerings with confidence,” said Marc Zwillinger, ZwillGen’s Founder and Managing Member. “Internally, they are all natural leaders and contribute to the firm culture of collaboration and comradery. I am really happy to see them take on these expanded roles.”

Also, in recognition of the growing importance of its Boston-based clients, ZwillGen has hired Michelle Anderson, a privacy lawyer formerly with DLA Piper, to work on international and domestic privacy matters. Michelle will also be available for on-site work with clients in the Boston area. As Marc Zwillinger said, “Having called Boston home for eight years, I have a special fondness for the city and its growing technology and online community. It will be excellent having an experienced lawyer working collaboratively across the firm while serving local clients.”

Melissa Maalouf – Melissa advises clients on both U.S. and international data privacy and security issues. She counsels providers of wearables, Internet-connected devices, and mobile applications on integrating “privacy-by-design” concepts into their products and in complying with the EU GDPR. She also 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 advising on children’s online privacy and safety issues.

Kandi Parsons – Kandi counsels clients regarding U.S. and international privacy, security, and marketing laws, including COPPA, FCRA, CAN-SPAM, the GDPR and education laws. She helps clients build privacy into their products, draft product terms and internal company policies, and conduct comprehensive training and privacy and security audits. Drawing on her eight-year tenure in the FTC’s Division of Privacy and Identity Protection, Kandi assists clients in responding to federal and state regulatory investigations. While at the FTC, Kandi served on detail to the U.S. Senate Committee on Commerce, Science, and Transportation.

Jeff Landis – Jeff represents clients in litigation, with a particular focus on defending media and technology companies in class action lawsuits brought under federal and state privacy statutes. He also assists clients in responding to law enforcement requests for user data and in formal investigations and informal inquiries conducted by the DOJ and states’ Attorney General Offices. Jeff has served as trial counsel in matters pending before judges, juries, and arbitration panels.

Mason Weisz – Mason advises on international privacy and data protection issues. He focuses on creating business-friendly strategies for navigating differences in foreign and U.S. law, including in relation to the EU General Data Protection Regulation (“GDPR”), ePrivacy rules, Privacy Shield, Standard Contractual Clauses, and other data transfer mechanisms. His practice covers areas such as data collection, product design, advertising technology, marketing, data licensing, data security, children’s privacy, health privacy and financial privacy.

Michelle Anderson – Michelle guides clients through multi-jurisdictional privacy and security issues relating to the collection, use, disclosure, security, and transfer of personal information. She regularly advises clients on the GDPR, cross-border data transfers and Privacy Shield, drafting and implementing privacy policies, breach notification and remediation, consumer protection, children and student privacy, vendor agreements, and privacy due diligence in acquisitions.

Read Full Release Download the PDF

ZwillGen Strengthens Information Security Team

WASHINGTON, D.C., October 16, 2017 – Allison Bender, an information security and incident response lawyer formerly with Hogan Lovells and the U.S. Department of Homeland Security, has joined ZwillGen as Counsel in the firm’s Washington, D.C. office.

Having served as primary operational legal counsel for the federal response to the Heartbleed vulnerability, the USIS-KeyPoint data breach, and the data breach, Allison brings to ZwillGen her extensive background in incident response, transactions, and information sharing. Allison has also served as Chief Negotiator for the U.S. government on nine legally binding international agreements and spent six years at DHS negotiating complex, multimillion dollar research and development agreements in emerging science and technology areas.

“Allison is a great addition to our information security team,” said Marc Zwillinger, Founder and Managing Member. “Not only has she managed over 80 incident response efforts and conducted large-scale information security assessments, but at DHS she was the chair of the interagency Automated Indicator Sharing Privacy & Compliance Working Group and can help our clients navigate the complex areas of cooperation, engagement, and information sharing with the federal government.”

At ZwillGen, Allison will draw from her roots in government, national security, and R&D to help clients with legal issues associated with emerging technologies and aid clients in strategically managing legal, financial, and reputational cybersecurity risks. “I am thrilled to be joining ZwillGen’s exceptional information security team. Companies are looking for strategies to manage and mitigate risk in this area. The firm has a great reputation for innovation and being highly responsive to client needs, which is exactly what companies want from counsel during the acute crisis of incident response. I look forward to building upon ZwillGen’s existing expertise in this area and adding value over the long term by helping clients mature from reactivity to resiliency.”

You can view Allison’s bio here.

Read Full Release Download the PDF

ZwillGen Deepens Information Security Bench and Expands Its California Presence

WASHINGTON, D.C., February 3, 2017 – ZwillGen has added two new attorneys to its Washington, D.C. and San Francisco offices. Alexei Klestoff, former director of compliance at Walmart Global eCommerce and Jason Wool, who was previously an attorney at Alston & Bird.

“We are happy about the talent and experience that we are adding to our team,” said Marc Zwillinger, ZwillGen’s Founder and Managing Member. “Alexei’s experience working in-house at a Fortune 500 company adds insight for clients whose companies are scaling and entering into unfamiliar legal territory. With Jason, we add another experienced cybersecurity attorney who will be able to help clients better secure their customer data and guide the response process in the event of a breach.”

Alexei Klestoff joins ZwillGen from Walmart Global eCommerce where he was the Director of Consumer Protection, advising on privacy risks involving advertising, marketing, social media, and regulated products. Prior to his work at Walmart, Alexei represented clients in complex litigation, including class action, false advertising, and intellectual property. “Navigating customer expectations and regulatory requirements for doing business online can be daunting, especially for in-house counsel who are trying to juggle so many different issues. I’m excited to be able to use my experience to guide ZwillGen clients away from the fray of potential liabilities.”

Jason R. Wool will join ZwillGen’s cybersecurity team having substantial experience working on a wide variety of cybersecurity, cyber risk management, and incident response matters. At Alston & Bird, Jason’s work included helping companies investigate and respond to data breaches and other cybersecurity incidents, develop and expand cybersecurity programs, run tabletop exercises, and assess and mitigate cyber risk. “I am looking forward to working with ZwillGen’s clients to protect themselves against attacks and breaches, as well as to understand and address the unique cyber risks they face. Today’s cyber culture can feel unsteady, but with the right safeguards and structures in place, companies can be ready for whatever comes at them. I love being part of that process.”

Read Full Release Download the PDF

ZwillGen Expands Subpoena Compliance Business and Adds Former Yahoo Associate General Counsel

WASHINGTON, D.C., March 9, 2016 – ZwillGen has announced the expansion of its Subpoena Compliance business with the creation of ZG Subpoena Solutions, and the arrival of former Yahoo Associate General Counsel, Aaron Altschuler.


Read Full Release Download the PDF

Stacey Brandenburg becomes a ZwillGen Shareholder

WASHINGTON, D.C., November 16, 2015 – ZwillGen PLLC announced that Stacey Brandenburg has become a Shareholder.

“Stacey adds immeasurable value to our firm,” said Marc Zwillinger, ZwillGen’s Founder and Managing Member. “From a work perspective, the quality and thoroughness of her work are unparalleled. She has become a go-to attorney for many of our clients on important and sensitive legal matters. Internally, Stacey has demonstrated the type of thoughtful leadership that made her an obvious choice to join the Firm’s ownership team. We are very happy that she has become a Shareholder.”

Stacey counsels clients on privacy issues, regulatory investigations involving privacy, unfair and deceptive practices, advertising disclosures, and fantasy sports matters. As a former Federal Trade Commission lawyer in the Division of Privacy and Identity Protection, Stacey regularly helps clients respond to FTC investigations pertaining to Section 5 of the FTC Act, the FTC’s endorsement and testimonial guidelines, and the Children’s Online Privacy Protection Act (COPPA). Stacey also helps clients implement sound security and privacy practices and provides compliance training to employees.

“Being part of ZwillGen has been an incredible and rewarding experience,” said Stacey Brandenburg. “ZwillGen continues to press into uncharted territory tackling nuanced legal issues, and I am proud to be a part of the firm and share in its accomplishments.”

Read Full Release Download the PDF

ZwillGen Welcomes FTC Senior Staff Attorney Kandi Parsons and Data Security Attorney Marci Rozen

WASHINGTON, D.C., August 31, 2015 – ZwillGen PLLC has added two new attorneys to its Washington, D.C. office. Kandi Parsons, former Senior Staff Attorney at the Federal Trade Commission (“FTC”) in the Division of Privacy and Identity Protection, has joined the firm today and Marci Rozen, former associate in the Privacy, Data Security, and Information Law Group of Sidley Austin LLP joined the firm on August 11, 2015.

“We are pleased with the incredibly high level of talent that ZwillGen continues to attract and retain,” said Marc Zwillinger, ZwillGen’s Founder and Managing Member. “It is our goal to increase our depth of experience so that we can best meet our client’s needs. Kandi’s background with the FTC and hands-on experience with COPPA supplements our existing resources and will benefit clients working on compliance issues in the FTC space. Likewise, Marci’s prior work on privacy, cybersecurity, and breach response issues will help clients seeking to better protect themselves from the multitude of cybersecurity threats.”

Kandi Parsons joins ZwillGen after having spent eight years as a Senior Staff Attorney in the FTC’s Division of Privacy and Identity Protection. Kandi’s work at the FTC focused on children and student privacy, data security, the Fair Credit Reporting Act, and the Gramm-Leach-Bliley Safeguard and Privacy Rules. While at the FTC, Kandi helped implement the revised 2013 COPPA rule and helped create staff FAQs related to assessing COPPA compliance. Additionally, Kandi served on detail for six months to the United States Senate, Committee on Commerce, Science, and Transportation where she worked on various consumer protection issues. Kandi received her B.A. from Columbia University and her JD from the Georgetown University Law Center. “After having spent many years working at the FTC, I’m looking forward to bringing my experience to ZwillGen and their clients,” said Kandi Parsons. “I’m excited to be a part of ZwillGen, which has developed a reputation for excellence in this area in such a short time.”

Marci Rozen, a former associate in the Washington, D.C. Sidley Austin office, has counseled clients on issues involving privacy, cybersecurity, and information law. Marci brings experience helping companies evaluate and develop corporate privacy and information security programs and has assisted clients on all levels of the data breach remediation process. When asked about the move, Marci said “Working at a boutique firm that focuses solely on the Internet’s legal landscape is an incredible opportunity. To top it all off, ZwillGen’s fun client list and workplace culture are both something I’m delighted to be a part of.”

Read Full Release Download the PDF

ZwillGen Bolsters Subpoena Compliance Team

WASHINGTON, D.C., February 2, 2015 – ZwillGen PLLC has bolstered its Subpoena Compliance practice by hiring Abby Liebeskind as a full-time Legal Compliance Attorney, and two former Yahoo! compliance team members, Shannon Kontinos and Darcy Riedell to assist clients with law enforcement user data requests. Abby Liebeskind was formerly a ZwillGen Fellow, and Shannon Kontinos and Darcy Riedell were formerly long-time Compliance Managers at Yahoo!.

“We are excited about this dimension of our practice and feel that it has evolved naturally from the legal advice and services we have provided clients on these issues,” said Marc Zwillinger, ZwillGen’s Founder and Managing Member. “Companies are receiving a record number of user data requests which can often be overwhelming for a team that isn’t properly prepared or already overburdened. Our expanded compliance team knows their way around this complex issue and knows how to assist clients with these delicate and time sensitive issues.”

ZwillGen’s compliance team offers hands-on support managing all law enforcement and civil subpoena compliance from start to finish. They also provide training programs for clients’ in-house teams on topics such as ECPA and legal issues surrounding communications and cloud service providers.

Additionally, the team can provide personnel with security clearances to handle classified national security legal process, can assist clients in developing policies and procedures for properly responding to law enforcement requests, and can advise on special projects such as transparency reporting, child pornography reporting and implementing or defending a reimbursement program.

Read Full Release Download the PDF