Data Breach Fallout: How Thompson Coburn’s Cybersecurity Gaps Sparked a Legal Firestorm
- Kylen Small
- Nov 15, 2024
- 3 min read

In a striking example of how cybersecurity lapses can lead to severe consequences, Thompson Coburn LLP, a leading U.S. law firm, is facing a class-action lawsuit over a data breach that compromised the personal and health information of over 300,000 individuals. This case, involving the firm’s client, Presbyterian Healthcare Services, highlights the growing vulnerabilities within professional service industries and serves as a warning to others who may overlook their digital defenses.
The Data Breach That Triggered a Lawsuit
The breach at Thompson Coburn occurred in May 2024, when an unauthorized hacker gained access to the firm’s network. Sensitive data—including names, Social Security numbers, dates of birth, medical records, and prescription information—was exposed. The compromised data primarily belonged to patients of Presbyterian Healthcare Services. The breach is alleged to have stemmed from insufficient cybersecurity protocols, according to the lawsuit filed in the U.S. District Court for the Eastern District of Missouri.
Reuters reports that this breach has already sparked substantial fallout for both organizations, with allegations of gross negligence in protecting sensitive information.
"Presbyterian Healthcare Services now faces the task of regaining the trust of its patients"
The Fallout: Legal, Financial, and Personal Impacts
The repercussions of this data breach are far-reaching. Presbyterian Healthcare Services now faces the task of regaining the trust of its patients, who are left vulnerable to identity theft, fraud, and emotional distress. For Thompson Coburn, the financial and reputational damage could be catastrophic. As Bloomberg Law outlines, the class-action lawsuit accuses the firm of failing to implement adequate safeguards, which allowed attackers to access highly sensitive client data.
This lawsuit reflects a growing trend in the legal industry, where law firms are increasingly being held accountable for cybersecurity failures.
Class Action: A Growing Legal Trend
Thompson Coburn’s lawsuit is not unique. Law firms, known for handling vast amounts of sensitive data, are becoming prime targets for cybercriminals. According to Law.com, several prominent firms have faced similar lawsuits, including: Gunster Yoakley & Stewart, Orrick Herrington & Sutcliffe, and Bryan Cave Leighton Paisner, which have all reached costly settlement agreements after major breaches.
This increasing legal scrutiny signals a warning to the broader professional services industry: inadequate cybersecurity measures are no longer just a risk—they’re a liability.
A Pattern of Vulnerability Across Industries
Thompson Coburn’s situation is part of a larger pattern. Many businesses in professional services, healthcare, and other data-sensitive industries lack sufficient cybersecurity measures to protect themselves against the evolving threat landscape. A 2023 report from IBM highlights that the average cost of a data breach reached $4.45 million globally, emphasizing the financial toll such incidents can have on organizations that fail to invest in proactive defenses.
With cyberattacks becoming more sophisticated, businesses must adopt comprehensive cybersecurity strategies, including regular risk assessments, employee training, and robust incident response plans.

The Solution: Empowering Businesses with Cybersecurity Education
The growing prevalence of data breaches underscores the need for proactive measures. At Cyber Hoplite, we offer targeted solutions to help businesses address the very risks that led to Thompson Coburn’s current legal challenges.
Free Cybersecurity Checkup: A comprehensive analysis to identify vulnerabilities and provide actionable solutions tailored to your industry.
Cybersecurity Essentials Training: Practical, team-focused training programs to empower employees with the skills to recognize and prevent common cyber threats like phishing and malware.
In-Depth Cybersecurity Workshop: Tailored workshops designed to address specific challenges faced by your business, ensuring a robust cybersecurity framework.
Why Act Now?
As shown in high-profile cases like Thompson Coburn’s, the cost of inaction is staggering—legal liabilities, loss of trust, and damage to your brand’s reputation. Conversely, the benefits of proactive cybersecurity are invaluable: peace of mind, stronger client relationships, and long-term resilience.
At Cyber Hoplite, we’re here to help you protect your business before it’s too late. Contact us today to schedule your free cybersecurity checkup and take the first step toward a safer, more secure future for your organization.
Together, we can ensure your business thrives in an increasingly digital world.