Mullen Coughlin, Cybersecurity & Data Privacy

Pre-breach planning
& Compliance
Privacy & Data Security Learn More
Breach Response 24/7 Crisis Management Services Learn More Litigation Defense Single-Plaintiff or Class Action Litigation Learn More Regulatory
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Cybersecurity & Data Privacy

Mullen Coughlin LLC is a law firm uniquely dedicated exclusively to representing organizations facing data privacy events, information security incidents, and the need to address these risks before a crisis hits. Founded by John Mullen, Jennifer Coughlin, Jim Prendergast, and Chris DiIenno, our team of accessible and motivated attorneys have handled thousands of events and possess experience and talent in data breach response, regulatory investigation defense, pre-breach planning and compliance, and privacy and security litigation defense unmatched in the industry.

Meet Our Team

  • Richard J. Aponte-Boyd Partner
    (267) 930-4888

    Richard Aponte-Boyd, a Partner at Mullen Coughlin, focuses his practice on data privacy and security incident response. Working with organizations […]

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  • George Chaisty Partner
    +44 (20) 8152 2178 | U.S. Office: +1 (267) 930-4392

    George Chaisty is a Partner with Mullen Coughlin UK (MC UK) based in London. He focuses his practice on data […]

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  • MaryEllen T. Conroy Partner
    (267) 930-4582

    MaryEllen Conroy is a Partner in Mullen Coughlin’s Litigation practice. With over 30 years of experience in U.S. state and […]

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  • Jennifer A. Coughlin Partner & Managing Member
    (267) 930-4774

    Jennifer A. Coughlin is a Founding Partner of Mullen Coughlin and its Managing Member, guiding the Firm in its commitment […]

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  • Ambre Rae Cross Partner
    (267) 930-1316

    Ambre Cross is a Partner with Mullen Coughlin UK (MC UK) and a key member of the Firm’s regional Incident […]

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  • C DiIenno Christopher J. DiIenno Partner
    (267) 930-4775

    Christopher Dilenno is a Founding Partner of Mullen Coughlin, focusing his practice on assisting organizations as they respond to, and […]

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  • Elizabeth R. Dill Partner & Co-Chair, Advisory Compliance
    (267) 930-5327

    Elizabeth (Liz) Dill, CIPP/US is a Partner at Mullen Coughlin, located in Richmond, Virginia. She focuses her practice on counseling […]

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  • Kevin E. Dolan Partner & Co-Chair, Advisory Compliance
    (267) 930-4861

    Kevin E. Dolan is a Partner at Mullen Coughlin and Co-Chair of the Firm’s Advisory Compliance practice group. As Co-Chair, […]

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  • Kevin M. Farrell Partner
    (267) 930-4691

    Kevin Farrell is a Partner at Mullen Coughlin. He represents organizations, particularly in the healthcare and life sciences industry, through […]

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  • Edward J. Finn Partner
    (267) 930-4776

    A Partner at Mullen Coughlin, Ed Finn assists organizations of all sizes with ensuring compliance with a wide variety of […]

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Firm News & Events

Mullen Coughlin UK Bolsters Partnership With Addition of Ambre Cross as Partner

Mullen Coughlin LLC continues its strategic growth by bolstering its international Incident Response (IR) practice with experienced attorney Ambre Cross as Partner in its London office.

“I am delighted to join Mullen Coughlin as a Partner. The Firm’s achievements in the UK cyber market to date, in terms of growth and reputation, are nothing short of remarkable. It is an incredibly exciting time for Mullen Coughlin, and I look forward to contributing to the Firm’s continued strategic growth in the UK,” said Ambre.

As Breach Counsel, Ambre is often called upon to advise on diverse and complex notification and regulatory obligations stemming from a wide range of data privacy and security incidents across the UK, EU, and other international jurisdictions. In addition to her IR practice, Ambre defends organizations in technical and diverse class action, single-plaintiff, and B2B litigation against claims relating to data privacy, protection, and security, as well as represents them in regulatory investigations. She routinely interacts, on behalf of her clients, with numerous UK-based regulatory agencies including the Information Commissioner’s Office (ICO), Financial Conduct Authority (FCA), the Solicitors Regulation Authority (SRA), and the Charity Commission.

Ambre is recognized by Legal 500 UK for her “knowledge and expertise” in highly-specialized areas of law, including cyber law, and she is often invited to speak at national and international conferences on cyber risk.

“I am thrilled to welcome Amber to the team,” said MC UK Managing Partner Cameron Carr. “I know the caliber of lawyer and colleague she is – she combines excellent judgment with a pragmatic, client-focused approach, and I am delighted that she has chosen to join us.”

“Ambre embodies the qualities that have fueled Mullen Coughlin’s growth from the very beginning – sound judgment based in unrivaled experience and an unwavering commitment to client service,” Mullen Coughlin Managing Member Jennifer A. Coughlin adds. “As the cyber landscape continues to evolve, the addition of talent like Ambre’s to our peerless team of skilled attorneys is essential to the Firm’s success. We welcome Ambre to the Firm.”

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Cyber Liability Claims Trends

As part of the IRMI’s free webinar series, Mullen Coughlin Partner Carolyn Purwin Ryan joins Kirsten Mickelson from Gallagher Bassett on the webinar, “Cyber Liability Claims Trends,” on July 21.

Designed for insurance, IT, and other risk management professionals, this presentation provides attendees with valuable insights into today’s cyber risk landscape and the related financial, legal, and operational consequences of data privacy and security incidents. Carolyn provides the latest trends in cyber liability claims such as emerging threats and common vulnerabilities, and best practices to mitigate cyber risk, enhance cybersecurity resilience, and understand cyber insurance.

Learn more and register to attend here.

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Mullen Coughlin Wins Cyber Law Firm of the Year Award at 2026 Zywave Cyber Risk Awards

Mullen Coughlin LLC is proud to announce that it was the recipient of the Zywave “Cyber Law Firm of the Year” award, presented on Thursday, June 11 at the 2026 Cyber Risk Awards in New York, NY. This award, which Mullen Coughlin has won multiple times, most recently in 2025, recognizes the law firm that has been “unparalleled in its work within the cyber insurance space,” and is voted upon by over 10,000 cyber industry peers, clients, partners, government officials, and colleagues.

This award once again solidifies Mullen Coughlin as the most trusted and premier legal partner for the cyber insurance community – including carriers, brokers, and insureds – around the globe. #Congratulations to the Firm on this well-deserved honor, and to all the other winners who represent the cyber insurance community’s “best-of-the-best”!

Read more about the Cyber Risk Awards and view the full list of winners here.

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