As one of the country's leading civil defense litigation law firms, the attorneys in Marshall Dennehey's Privacy & Data Security Practice Group are focused on helping clients reduce cyber risk exposures and guiding them through incident response, containment, and compliance measures after a data breach occurs. Staffed to respond to time critical situations with 24/7 availability, our firm has handled thousands of data breaches and privacy claims for clients in the technology, health care, education, financial, banking, retail, energy, consumer protection, professional services and other industry sectors.
A Customized Approach
In the arena of privacy and data security, there is no one-size-fits-all response. At Marshall Dennehey, we partner with each client to develop a customized approach, with a focus on how decisions may impact a future defense to litigation or regulatory action. Whether it is a breach involving hundreds of individuals, or millions, we counsel clients in a way that is cost-effective, compliant with the law and protective of a company's brand.
Data breaches often involve multiple areas of a client's business. When a breach involves the theft or disclosure of trade secrets, or the violation of a company's social media policy, attorneys in our Employment Law and Technology, Media and Intellectual Property Litigation Practice Groups are available to provide critical and immediate counsel. This counsel includes assisting clients in appropriately and effectively communicating with employees who may be suspected of involvement with the breach incident.
SELECT INDUSTRIES WE SERVE
Health Care
Privacy and data security matters in the health care sector require significant knowledge of how health care systems work on both regulatory and administrative levels. Our attorneys play a critical role in helping health care clients avoid, prepare for, and respond to data breach events. Beginning with HIPAA/HITECH compliance, our attorneys provide counsel on interpretation of federal and state privacy/security laws and regulations, and assist clients in investigations by governmental agencies, including the state attorneys general and the Department of Health and Human Services Office for Civil Rights. We additionally help clients develop risk management procedures and policies that are not only required by law, but that also help to educate and prepare providers, insurers and business associates on ways sensitive patient health information can be safeguarded.
Education
Universities, colleges and other institutions of higher education across the country are increasingly the target of computer hackers. Marshall Dennehey has provided legal counsel to educational entities of all sizes in the aftermath of data breach events. Our services focus on incident response development and notification as well as containment and compliance measures, including appropriate usage of social media channels to communicate incident updates to internal and external audiences. Our client representation in this sector has included working with the U.S. Department of Education in investigating breach incidents.
Financial and Banking
Security breaches and computer hacking incidents at financial institutions have become alarmingly common. Our firm routinely works with banking and financial institutions in responding to data breaches. From compliance with the Gramm-Leach-Bliley Act requirements to working with forensic investigators in the critical initial stages, we are experienced in counseling clients through every stage of these sensitive, and often, high-profile, engagements. When necessary, we are also accustomed to working with governmental agencies such as local and state law enforcement as well as the Secret Service and the FBI to help respond to, or investigate, a breach event.
Retail, Energy, Utility and Service Industries
From e-commerce web retailers to insurance companies and their nationwide brokers, we have assisted companies in the investigation and response to data breaches as well as Payment Card Industry-Data Security Standards (PCI-DSS) compliance. With extensive experience in defending business entities in consumer-related litigation, we have the attorney resources to manage every aspect of a data breach event.
Professional Services
Professional services entities such as law firms and accounting firms are increasingly the targets of cyber criminals for personal information and sensitive data. We have assisted hundreds of professional services firms when they have been forced to respond to cyberattacks. Our services allow these clients to immediately identify the issues, respond in a timely manner, and ensure that all legal obligations are met. We also assist with communications that enable clients to reassure their constituencies that their data is protected.
AREAS OF EXPERIENCE
- Data breach incident response and notification
- Data security and retention policies
- Defense of numerous state lawsuits involving federal and state law privacy breaches
- Review of Vendor Agreements and Business Associate Agreements
- HIPAA/HITECH violation responses
- Investigations and audits by Department of Health and Human Services Office for Civil Rights
- Counseling to respond to U.S. Department of Health and Human Services Centers for Medicare & Medicaid Services (CMS), state Medicaid agencies, state departments of health and insurance and state/professional licensing boards
- Gramm-Leach-Bliley Act (GLBA) requirements
- PCI-DSS compliance, requirements and other payment card data issues
- Claims and litigation involving point of sale (POS) software and hardware
Our attorneys are available at any time to discuss potential legal matters, or the development of workshops and educational seminars for your company or organization.
Results
Thought Leadership
Legal Updates for Privacy and Data Security
Vendor Cyber Attack Compromises PII of More Than 3 Million Hunting and Fishing License Holders in Texas
June 30, 2026
The Texas Parks & Wildlife Department (TPWD) announced earlier this month that one of its vendors which handles the sale of state hunting and fishing licenses was the victim of a cybersecurity attack. The threat actor appears to have exfiltrated personal driver’s license information, passport numbers, email addresses, phone numbers and addresses of over 3 million hunting and fishing license holders. The State Parks Department advised that the attack did not compromise social security numbers, dates of birth or financial information. Texas Cyber Command, the state’s new cybersecurity authority formed to protect critical infrastructure and coordinate threat responses across state and local government, reportedly assisted in detecting and containing the attack. TPWD has already set up free credit monitoring for those impacted through Kroll. According to press reports, no specific group has yet been identified as the perpetrator of the theft. TPWD also advised that business has not been interrupted and license sales were continuing. This incident once again demonstrates that cybersecurity is only as strong as the weakest link in the supply chain. Businesses must prioritize security across their own environments and those of their vendors and contractors as well.
Legal Updates for Privacy and Data Security
Identity Theft Resource Center Report Reveals Rising Data Breaches Despite Drop in Mega Breaches
February 19, 2026
The Identity Theft Resource Center (ITRC), a well-known, non-profit identity theft and fraud prevention organization, recently released its 2025 annual data breach report with significant findings for the data breach field. The ITRC tracked 3,322 data breaches in 2025 – an increase of more than 5% compared to 2024. The numbers set a new record for U.S. data breaches tracked by the ITRC over the past 20 years. These numbers also show a 79% jump in data breaches over the last five years. Just as importantly, the number of victim notices that were sent out decreased. In 2024, the ITRC found that over 1.3 million notices had been sent out, while in 2025 less than 300,000 notices were distributed. The ITRC noted that the significant decrease in victim notices was likely due to the lack of “mega-breaches” in 2025 compared to 2024. The ITRC also found that the financial services industry was the most breached industry in 2025 followed by health care, professional services, manufacturing, and education. The ITRC’s president was quoted that they had found “more attacks that are more precise, more automated and more difficult to detect. Consumers can take all of the right steps, businesses can have the best cyber security and still fall victim to criminals.” These findings are significant for the cyber security insurance field. While mega breaches may be decreasing, the overall number of breaches demonstrates that all businesses should be obtaining proper cyber security insurance, and insurance carriers should be aware that while less notices will go out, more claims will be made that can affect both underwriting and the claims procedures. Legal Updates for Privacy & Data Security - February 19, 2026, has been prepared for our readers by Marshall Dennehey. It is solely intended to provide information on recent legal developments and is not intended to provide legal advice for a specific situation or to create an attorney-client relationship. We welcome the opportunity to provide such legal assistance as you require on this and other subjects. If you receive the alerts in error, please contact MeDeSatnick@MDWCG.com. ATTORNEY ADVERTISING pursuant to New York RPC 7.1. © 2026 Marshall Dennehey, P.C. All Rights Reserved.
