South Texas Oncology and Hematology, a San Antonio, TX-based provider of leading-edge cancer treatment and other medical services, has settled a class action lawsuit stemming from a February 2024 cyberattack and data breach that involved unauthorized access to the personal information of 176,303 individuals, including the protected health information of 175,195 individuals.

Suspicious network activity was identified on February 15, 2024, and the forensic investigation confirmed that an unauthorized individual accessed its network and potentially obtained employee and patient information. Data exposed in the incident included names, contact information, dates of birth, health information, and Social Security numbers. The affected individuals were notified about the incident in June 2024.

The first class action lawsuit over the data breach was filed by plaintiff Doris Flores on June 24, 2024, in the U.S. District Court for Bexar County, Texas, 438^th Judicial District. Several other lawsuits were subsequently filed, and since they made similar claims and had overlapping classes, the plaintiffs’ counsel agreed to work cooperatively and litigate in a single action – Flores v. South Texas Oncology and Hematology, PLLC.

The consolidated lawsuit alleged that the defendant failed to implement reasonable and appropriate cybersecurity measures to protect sensitive data on its network, and that the data breach should have been prevented. South Texas Oncology and Hematology maintains that there was no wrongdoing, there is no liability, and denies all claims and contentions in the lawsuit. The defendant and the plaintiffs agreed to a settlement to avoid the costs and risk associated with a trial, with no admission of fault or liability.

The settlement has received preliminary approval from the court, and the final fairness hearing has been scheduled for July 21, 2026. Under the terms of the settlement, South Texas Oncology and Hematology has agreed to pay $1,075,000 to cover attorneys’ fees and expenses, settlement administration and notification costs, service awards for the class representatives, and benefits for the class members.

Class members may submit a claim for reimbursement of up to $5,000 in documented, unreimbursed losses due to the data breach, or they may claim an alternative pro rata cash payment. The cash payments are estimated to be $100 per class member, but may be higher or lower depending on the number of valid claims received. In addition to one of those benefits, class members may also claim two years of free medical data monitoring services. Claims must be submitted by July 6, 2026, and individuals wishing to object to the settlement or exclude themselves must do so by June 22, 2026.

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Alabama Ophthalmology Associates, P.C., has settled a class action lawsuit that was filed in response to a January 2025 cyberattack on its computer systems. The intrusion was identified on January 30, 2025, and the forensic investigation confirmed unauthorized access to its network between January 22 and January 30, 2025.

The hackers had access to files containing names, dates of birth, Social Security numbers, medical record numbers, treatment information, medical history information, and health insurance information. The Alabama Ophthalmology data breach affected 131,576 individuals, and notification letters were mailed in April 2025. Multiple class action lawsuits were filed in response to the data breach, which were consolidated as they had overlapping claims – In re Alabama Ophthalmology Associates, P.C., Data Breach Litigation – in the Circuit Court of Jefferson County, Alabama.

The consolidated lawsuit alleged that the defendant failed to implement reasonable and appropriate safeguards to protect sensitive data on its network, resulting in unauthorized access and exposure of patient data, and failed to issue adequate breach notifications. The lawsuit asserted claims for negligence, negligence per se, breach of contract, breach of implied contract, breach of fiduciary duty, breach of confidence, invasion of privacy, fraud, misrepresentation, unjust enrichment, bailment, wantonness, and failure to provide adequate notice pursuant to any breach notification statute or common law duty.

The defendant denies all claims and contentions in the lawsuit and maintains that there was no wrongdoing and that there is no liability. To avoid further legal costs and the uncertainty of a trial, all parties explored early resolution of the lawsuit, and a settlement was ultimately agreed upon that was acceptable to all parties.

Class members are entitled to claim two years of medical data monitoring and identity theft protection services, plus one of two cash payments. A claim may be submitted for documented, unreimbursed losses due to the data breach up to a maximum of $5,000 per class member, or a claim may be submitted for an alternative pro rata cash payment, the value of which will depend on the number of valid claims received. The cash payments are expected to be around $60 per class member. The deadline for objection and exclusion is June 5, 2026. Claims must be submitted by June 25, 2026, and the final fairness hearing has been scheduled for July 6, 2026.

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Tempus AI, a publicly traded healthcare artificial intelligence company, is facing multiple class action lawsuits over the alleged unauthorized collection and disclosure of genetic testing results, which were derived from genetic testing by Ambry Genetics Corporation (Ambry Genetics).

Ambry Genetics offers comprehensive genetic testing services, including screening and diagnosis of inherited and non-inherited diseases. Tempus AI was founded in 2015 and builds tech solutions around clinical care and research products. In February 2025, Tempus AI acquired Ambry Genetics for $600 million, and as a condition of the acquisition, Ambry Genetics was required to disclose its vast database of genetic data to Tempus AI. The database contained the genetic information of hundreds of thousands of individuals.

Tempus AI used Ambry Genetics’ genetic database to train its AI models. Tempus AI had signed agreements with more than 70 companies, including large and mid-sized pharmaceutical firms such as AstraZeneca, Bristol Myers Squibb, Pfizer, and GlaxoSmithKline, and biotechnology firms such as Incyte, Servier, Aspera Biomedicines, and Whitehawk Therapeutics. Genetic data derived from Ambry Genetics testing services was provided to those clients under those agreements.

Several class action lawsuits were filed against Tempus AI over the use of genetic data to train the AI models and the subsequent disclosures of genetic data. The lawsuits were consolidated into a single complaint – Farrier et al v. Tempus AI, Inc. – on April 15, 2026, in the U.S. District Court for the Northern District of Illinois. The lawsuit alleges that Tempus AI violated the Illinois Genetic Information Privacy Act (GIPA) and other state statutes by compelling Ambry Genetics to disclose the genetic data collected through its testing services and violating the same laws by disclosing the genetic data through its agreements with third-party partners. The lawsuit claims that Tempus AI has profited enormously from selling genetic data without the knowledge or written consent of the data subjects. The lawsuit alleges that the class members’ genetic data was disclosed to those clients in deals totaling $1.1 billion.

Tempus AI claims to have a clinical and molecular data library consisting of 45 million de-identified patient records, including 8.5 million clinical records, 2 million medical images, and 1 million matched clinical-genomic records. The lawsuit alleges that Tempus AI and Ambry Genetics misled the public by claiming that they only disclose de-identified genetic information, when that is not the case. Further, the lawsuit claims that genetic information “cannot be deidentified because such data serves as an inherently unique biomarker,” and like DNA, the information is inherently identifiable.

The 21-count lawsuit asserts claims for negligence, unjust enrichment, fraudulent concealment, Conversion, invasion of privacy-intrusion upon seclusion, breach of contract, breach of implied contract, breach of fiduciary duty, and violations of consumer and data protection laws, deceptive trade practices laws in California, Florida, Georgia, Illinois, Michigan, New York, and West Virginia.

The plaintiffs seek a jury trial and damages, injunctive relief, and any other remedies that the Court deems appropriate to redress Tempus AI’s alleged unlawful and unauthorized data collection and disclosures, including an order from the court compelling Tempus AI to cease sharing individuals’ genetic data without first providing the data subjects with proper notice and obtaining their written consent.

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A class action lawsuit filed against Absolute Dental Group, LLC, and Judge Consulting, Inc., over a 2025 data breach has been settled for $3,300,000. Absolute Dental is a Nevada-based dental care provider, and Judge Consulting is a provider of technology consulting, staffing solutions, and corporate training services. Absolute Dental contracted with Judge Consulting as its managed services provider and was responsible for the daily management and operations of Absolute Dental’s IT systems.

Absolute Dental identified suspicious activity within its network on February 26, 2025, and the forensic investigation confirmed that an unauthorized third party accessed its network between February 19, 2025, and March 5, 2025. Access was gained through an account associated with Judge Consulting. The hackers had access to names, contact information, Social Security numbers, driver’s license numbers, health information, health insurance information, financial information, and other sensitive data. The data breach was one of the largest of the year, affecting 1,223,635 individuals.

Several class action lawsuits were filed in response to the data breach, which were consolidated into a single complaint – Jordan et al. v. Absolute Dental Group, LLC, et al., – in the U.S. District Court for the District of Nevada. The lawsuit alleged that the defendants failed to adequately secure patient data, failed to properly monitor their systems for intrusions, and failed to provide timely notice to the victims of the breach. The lawsuit asserted claims for negligence, negligence per se, breach of contract, breach of implied contract, unjust enrichment, breach of fiduciary, breach of confidence, invasion of privacy, violations of the Nevada Privacy of Information Collected on the Internet From Consumers Act, and declaratory and injunctive relief.

Following mediation, the plaintiffs and the defendants agreed to a settlement that was acceptable to all parties, with no admission of wrongdoing, fault, or liability by the defendants. A $3,300,000 settlement fund will be established to cover attorneys’ fees and expenses, settlement administration and notification costs, and service awards for the five class representatives. The remainder of the settlement fund will be used to pay for benefits for the class members.

Class members may choose to submit a claim for reimbursement of documented, unreimbursed losses due to the data breach up to a maximum of $5,000 per class member, or they may claim an alternative pro rata cash payment, the value of which will depend on the number of valid claims received. Residents of California at the time of the data breach also qualify for an additional cash payment. The deadline for objection to and exclusion from the settlement is June 9, 2026. Claims must be submitted by June 18, 2026, and the final approval hearing has been scheduled for July 30, 2026.

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Tangoe, a provider of software solutions for managing telecom, mobile, and cloud expenses, has agreed to a settlement to resolve a class action lawsuit stemming from a November 2022 security incident. Tangoe experienced a cyberattack, exposing sensitive data such as names, dates of birth, Social Security numbers, medical information, health insurance information, medication information, billing and claims information, and financial account information. Hackers had access to its systems between November 15, 2022, and November 17, 2022.

The breach affected some of its healthcare clients and involved unauthorized access to the protected health information of 4,765 individuals, according to the breach notice filed with the HHS’ Office for Civil Rights. While the breach occurred in November 2022, it took until November 1, 2023, for the affected individuals to be notified. A lawsuit – Kevin McLinden v. Tangoe US, Inc.– was filed in the Superior Court for Marion County, Indiana, over the data breach, alleging Tangoe failed to implement reasonable and appropriate cybersecurity measures, leading to an entirely preventable data breach. Tangoe denies all claims and contentions in the lawsuit, including claims of wrongdoing, fault, and liability.

After prolonged and extensive arm’s length negotiations, all parties agreed to a settlement to avoid the expense and length of protracted litigation and the uncertainty of a trial and any related appeals. Under the terms of the settlement, class members are entitled to claim two years of credit monitoring services, which include a $1 million identity theft insurance policy. In addition to the credit monitoring services, class members may claim one or more cash payments.

A claim may be submitted for compensation for documented, unreimbursed ordinary losses due to the data breach incurred between November 2022 and June 3, 2026. Claims for reimbursement of ordinary losses have been capped at $750 per class member. A claim may also be submitted for compensation for lost time up to a maximum of four hours at $25 per hour ($100). The lost time claims are included in the $750 ordinary losses cap.

A claim may also be submitted for reimbursement of extraordinary losses, such as documented, unreimbursed losses due to identity theft and fraud. Claims for extraordinary losses have been capped at $5,000 per class member. If a claim for reimbursement of losses/lost time is not submitted, class members are eligible to claim an alternative pro rata cash payment. The cash payments will be paid from the remainder of the settlement fund, and are expected to be around $50, but may be higher or lower depending on the number of claims received. No proof is required to submit a claim for an alternative cash payment.

The deadline for exclusion and objection to the settlement is May 4, 2026. Claims must be submitted by June 3, 2026, and the final fairness hearing has been scheduled for June 11, 2026. Individuals who do nothing will receive no benefits and will lose the right to sue the defendant over the data breach or participate in other lawsuits related to the data breach.

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Memorial Heart Institute, doing business as Chattanooga Heart Institute in Tennessee, was sued over a data breach in 2023. A $3.75 million settlement has been agreed upon and has received the first nod from a judge. The final fairness hearing has been scheduled for May 28, 2026.

The cyberattack was identified on April 17, 2023. The investigation determined that a threat actor had access to the Chattanooga Heart Institute network between March 8 and March 16, 2023, and exfiltrated files, some of which contained patients’ protected health information. The file review confirmed that data compromised in the incident included names, addresses, email addresses, phone numbers, dates of birth, driver’s license numbers, Social Security numbers, account information, health insurance information, diagnosis/condition information, lab results, medications, and other clinical, demographic, or financial information.

The Karakurt ransomware group claimed responsibility for the attack. The data breach was reported to the HHS’ Office for Civil Rights as involving the protected health information of 545,491 individuals. Several class action lawsuits were filed in response to the data breach, which were consolidated into a single action – Cahill, et al., v. Memorial Heart Institute, LLC, d/b/a The Chattanooga Heart Institute – in the U.S. District Court for the Eastern District of Tennessee, Southern Division of Chattanooga.

According to the lawsuit, approximately 460,000 individuals had their private information exposed or stolen in the incident, including 287,000 individuals who had their Social Security numbers exposed. The plaintiffs alleged that Chattanooga Heart Institute negligently maintained patient data and had not implemented appropriate safeguards to prevent unauthorized access, claims strenuously denied by the Chattanooga Heart Institute. The lawsuit asserted claims for negligence, negligence per se, breach of implied contract, unjust enrichment, bailment, breach of fiduciary duty, invasion of privacy, and declaratory and injunctive relief.

Chattanooga Heart Institute sought to have the lawsuit dismissed; however, the request was denied in part, and the lawsuit was allowed to proceed. During discovery, the parties began exploring the possibility of an early resolution, and following mediation, agreed upon the material terms of a settlement. The settlement has now been finalized, with no admission of wrongdoing or liability by the Chattanooga Heart Institute. The defendant will establish a $3,750,000 settlement fund, which will be split into two separate funds – a non-revisionary $2,000,000 fund for the Social Security number subclass and up to $1,750,000 fund for the total class.

All class members may claim two years of credit monitoring services, valued at approximately $120 per year. In addition, a claim may be submitted for reimbursement of documented, unreimbursed losses due to the data breach up to a maximum of $5,500 per class member. A cash payment may also be claimed by members of the Social Security number settlement class. The cash payments will be paid pro rata after the settlement administration costs, a share of the attorneys’ fees and expenses, and service awards for the class representatives have been deducted. The attorneys’ fees and costs will be divided between the Social Security number class (53%) and the total class fund (47%). The deadline for submitting a claim is July 13, 2026. Individuals wishing to exclude themselves or object to the settlement must do so by June 12, 2026.

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Illinois Bone and Joint Institute (IBJI), one of the largest orthopedic group practices in Illinois, has agreed to settle a consolidated class action lawsuit stemming from a 2024 cyberattack and data breach that affected up to 665,321 individuals.

IBJI identified unauthorized access to its computer systems on or around July 4, 2024. The forensic investigation determined that hackers had access to its network from May 30, 2024, to July 4, 2024, and copied files containing patient information. Data compromised in the incident included names, addresses, dates of birth, Social Security numbers, diagnosis and treatment information, and health insurance/claims information. The breach was initially reported to the HHS’ Office for Civil Rights as affecting approximately 183,000 individuals. The total was later amended to 665,321 individuals, although the lawsuit states that approximately 568,000 individuals are in the settlement class.

The first class action lawsuit over the data breach was filed by plaintiff Guy Redman in the Circuit Court of Cook County, Illinois, County Department, Chancery Division. A further seven lawsuits were filed by other plaintiffs, which were consolidated into a single complaint because the lawsuits had overlapping claims. The consolidated class action lawsuit asserted claims for negligence, breach of implied contract, unjust enrichment, invasion of privacy, and a violation of the Illinois Consumer Fraud and Deceptive Business Practices Act.

The defendant denied and continues to deny all claims and contentions in the lawsuit, including all claims of fault, wrongdoing, and liability. Following mediation, the material terms of a settlement were agreed upon to bring the litigation to an end and avoid the costs and distraction of protracted litigation and the uncertainty of a trial. The settlement has now been finalized and granted preliminary approval from the court. The final fairness hearing has been scheduled for July 1, 2026.

The defendant has agreed to establish a $4 million settlement fund to cover attorneys’ fees and expenses, settlement administration and notification costs, and service awards from the class representatives. The remainder of the settlement fund will be used to pay for benefits for the class members. Class members are entitled to two years of medical data monitoring, reimbursement of out-of-pocket losses due to the data breach, and a pro rata cash payment. Class members may claim reimbursement of up to $5,000 in documented, unreimbursed losses and the cash payments are estimated to be $50 per class member, although the cash payments may be higher or lower depending on the number of claims received. The deadline for submitting a claim is July 1, 2026. Individuals wishing to exclude themselves or object to the settlement must do so by June 1, 2026.

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Anne Arundel Dermatology has agreed to pay $2,400,000 to settle a consolidated class action lawsuit stemming from a cybersecurity incident involving unauthorized access to its network for three months in 2025. Anne Arundel Dermatology identified suspicious activity within its computer network on May 13, 2025. The forensic investigation confirmed that an unauthorized third party had access to its network between February 14, 2025, and May 13, 2025. It was not possible to determine if patient data was accessed or exfiltrated in the attack, so notification letters were sent to 1,905,000 current and former patients who may have been affected. Information potentially compromised included names, addresses, birth dates, medical information, health insurance information, and other personal information.

Many class action lawsuits were filed in response to the data breach. Due to the lawsuits having overlapping claims, the 21 lawsuits were consolidated into a single action – In Re Anne Arundel Data Breach Litigation – in the U.S. District Court for the District of Maryland. The consolidated lawsuit alleged that Anne Arundel Dermatology negligently maintained sensitive data and failed to implement reasonable and appropriate cybersecurity measures. The lawsuit asserted claims for negligence, breach of contract, breach of fiduciary duty, unjust enrichment, and intentional invasion of privacy, all of which were denied by the defendant, along with claims of wrongdoing, fault, and liability.

Class counsel explored the opportunity for an early resolution of the litigation, and following mediation, the material terms of a settlement were agreed upon. The settlement has now been finalized and has received preliminary approval from the court. The final fairness hearing has been scheduled for July 16, 2026. Anne Arundel Dermatology has agreed to establish a $2.4 million settlement fund, from which attorneys’ fees and expenses, settlement administration and notification costs, and service awards for the class representatives will be deducted. The remainder of the settlement fund will be used to pay for benefits for the class members.

Class members are entitled to claim a 3-year membership to the CyEx Medical Shield Complete product, which provides medical data monitoring, and one of two cash payments. A claim may be submitted for reimbursement of documented, unreimbursed losses due to the data breach up to a maximum of $5,000 per class member, or an alternative pro rata cash payment may be claimed, which is estimated to be $100 but may be higher or lower depending on the number of valid claims received. The deadline for opting out and objection is June 9, 2026, and claims must be submitted by July 8, 2026.

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Concord Orthopaedics Professional Association, a New Hampshire-based provider of comprehensive orthopedic and rheumatology care, has settled a consolidated class action lawsuit stemming from a November 2024 cybersecurity incident involving unauthorized access to the personal and protected health information of 72,815 individuals.

Concord Orthopaedics detected an intrusion on November 21, 2024. Hackers had gained access to its computer network, where names, dates of birth, Social Security numbers, appointment information, health insurance information, and driver’s license/state identification numbers were stored. The affected individuals started to be notified about the incident on March 25, 2025.

The first class action lawsuit was filed by plaintiff Kattie Montambeault on April 1, 2025, in the Merrimack County Superior Court for the State of New Hampshire. A further four class action complaints were filed in response to the data breach, which were consolidated into a single action – Montambeault, et al. v. Concord Orthopaedics Professional Association – in the Superior Court of Hillsborough County, New Hampshire. The consolidated class action complaint names 12 individuals as class representatives.

The lawsuit alleged that Concord Orthopaedics failed to implement reasonable and appropriate cybersecurity measures to protect sensitive data stored on its network, and that, as a result of that failure, the plaintiffs’ and class members’ personal and protected health information was accessed by hackers.

Concord Orthopaedics agreed to a settlement to resolve all claims asserted in the lawsuit with no admission of wrongdoing, fault, or liability. Class counsel and the class representatives believe that the settlement is fair, and the settlement has received preliminary approval from the court. The settlement provides multiple benefits for the class members. All class members are entitled to a one-year membership to a medical data monitoring service, and may also submit a claim for the following benefits:

• Reimbursement of documented, unreimbursed losses due to the data breach up to a maximum of $3,000 per class member
• Reimbursement of lost time of up to 4 hours at $25 per hour (maximum of $100)

In addition to or instead of a claim for reimbursement of out-of-pocket losses, class members may submit a claim for a one-time cash payment, which is estimated to be $50, but may be higher or lower depending on the number of valid claims received. Individuals submitting a claim for reimbursement of lost time are not eligible to claim the one-time cash payment.

The deadline for objection to the settlement and exclusion is May 26, 2026. The deadline for submitting a claim is July 8, 2026, and the final fairness hearing has been scheduled for June 23, 2026

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