Data Breach Lawsuits: Claims When Companies Fail to Protect Your Information

Status: Investigating claims · Last updated November 2026

If you received a notice that your Social Security number, medical records, financial information or other personal data was exposed in a data breach, you may have a claim against the company that failed to protect it. Data breach victims face years of risk from identity theft, fraud and medical identity misuse, and the law can hold careless companies responsible.

At Wieand Parker Arreola, we are investigating data breach and privacy claims, from massive healthcare breaches to companies that share your data without consent. This page explains how data breach lawsuits work, recent major cases and who may qualify. Call (215) 666-7777 for a free, confidential case review.

Why Data Breaches Lead to Lawsuits

Companies that collect sensitive information have a duty to use reasonable security to protect it. Data breach lawsuits commonly allege that a company:

• Failed to use basic protections such as encryption and multi-factor authentication
• Ignored known vulnerabilities or failed to install security patches
• Kept old data longer than necessary
• Failed to detect an intrusion for weeks or months
• Delayed notifying victims, leaving them unable to protect themselves

Claims may include negligence, breach of contract, unjust enrichment and violations of state consumer protection and privacy laws.

Major Data Breach Litigation

Data breaches now affect hundreds of millions of people:

• Change Healthcare (2024). A ransomware attack on UnitedHealth Group’s claims-processing subsidiary exposed data on about 190 million people, the largest healthcare breach ever reported in the U.S. Lawsuits are consolidated in federal court in Minnesota, and as of mid-2026 no settlement had been reached.
• PowerSchool (2024–2025). A breach at a major school software provider exposed information on millions of students and teachers. Federal lawsuits were consolidated into a single proceeding in 2025.
• Past settlements show the scale these cases can reach, including Equifax (2019, about $700 million total) and T-Mobile (2022, $350 million).

For breaches that disrupt patient care, see our page on hospital ransomware attacks.

Data and Privacy Claims We Are Investigating

• Hospital ransomware attacks that disrupt patient care
• Health app data shared with advertisers
• AI chatbots and call recording that violate wiretap laws
• Catastrophic software outages
• Crypto exchange collapses and hacks

Who May Qualify for a Data Breach Lawsuit

These are the main factors we review:

1. A breach notice or other confirmation that your data was exposed.
2. Sensitive data. Social Security numbers, medical records, financial accounts, driver’s license numbers or biometric data.
3. Harm. Identity theft, fraudulent accounts, tax fraud, unauthorized charges, time spent fixing problems or emotional distress.
4. Out-of-pocket costs. Credit monitoring, freezes, lost wages or professional fees.
5. Prompt action. Filing deadlines apply, so contact a lawyer promptly to protect your rights.

Many breach cases proceed as class actions. Some people with serious identity theft or financial losses may be better served by an individual claim.

Protect Yourself After a Breach

Freeze your credit with all three credit bureaus, enable multi-factor authentication and change passwords. Monitor bank, credit card and medical insurance statements. If your identity is misused, report it at IdentityTheft.gov, the Federal Trade Commission’s recovery site. Keep the breach notice, records of fraud and receipts for any costs.

Data Breach Lawsuit FAQs

Do I need proof of identity theft to bring a claim?

Not always. Courts have recognized certain harms, such as the real risk of future misuse and costs to protect yourself, but the rules vary.

Should I join a class action or file my own case?

It depends on your losses. We can review your situation and explain the options.

The company offered free credit monitoring. Should I accept it?

Usually yes. Read the terms first to make sure you are not giving up legal rights.

Contact a Data Breach Lawyer at Wieand Parker Arreola

If your personal information was exposed in a data breach, contact Wieand Parker Arreola for a free, confidential case review. If we take your case, you pay no fee unless we recover compensation for you. See our other class action and mass tort cases and all of our technology and AI claims.

Call (215) 666-7777 or contact us online for a free case review.

This article is for general information only and is not legal advice. Reading it does not create an attorney-client relationship. Information is current as of November 2026 and may change.