• October 2026 •

Mankato Clinic Data Breach

Last Updated on October 20, 2026

If your information was compromised in the Mankato Clinic data breach, you may be able to start a class action to collect money for the harm you’ve suffered.

• Keep reading for more information

At A Glance

What's Going On?: Attorneys need to hear from people affected by the Mankato Clinic data breach as they investigate whether a class action lawsuit can be filed.
What You Can Do: If you believe your information may have been compromised in the Mankato Clinic data breach, fill out the form on this page to learn more about the investigation and how you can help.
Does This Cost Anything?: It costs nothing to get in touch or to talk to someone about your rights.
What Can I Get?: If filed and successful, a class action lawsuit could provide consumers with money for any harm resulting from the Mankato Clinic breach.

Mankato Clinic Data Breach: Lawsuit Investigation

Attorneys working with ClassAction.org are looking into whether a class action lawsuit can be filed in light of the Mankato Clinic data breach.

As part of their investigation, they need to hear from individuals who had their information exposed in the incident, including those who received notice of the Mankato Clinic data breach or otherwise believe they are affected.

Mankato Clinic Security Incident: What Happened?

Mankato Clinic, a multispecialty healthcare provider with multiple locations in Minnesota, has reported a data breach that may have exposed sensitive information.

According to an October 16, 2026 notice posted to its website, Mankato Clinic began investigating a potential cybersecurity incident with third-party forensic investigators on August 18 of the same year. This investigation revealed that certain information within the healthcare provider's network was accessed and taken between August 12 and August 18, 2026.

Information that may have been exposed in the Mankato Clinic data breach, varying by individual, included names, dates of birth, health insurance information and medical information, such as billing/claims information, diagnoses, physician information, medical record numbers, Medicare/Medicaid information, prescription/medication information and diagnostic or treatment information.

An October 16, 2026 report submitted to the Massachusetts Office of Consumer Affairs and Business Regulation states that the incident may have additionally involved Social Security numbers.

Prior to the official disclosure, hacker group Chaos claimed to be responsible for an attack on Mankato Clinic that allegedly resulted in the exfiltration of 610 gigabytes of data, according to a September 10, 2026 post on dark web monitoring site Ransomware.live.

What You Can Do After the Mankato Clinic Data Breach

If your information was exposed in the Mankato Clinic data breach, attorneys want to hear from you. You may be able to start a class action lawsuit to recover compensation for loss of privacy, lost time, out-of-pocket costs, and more.

A successful case could also force Mankato Clinic to ensure they take proper steps to protect the information they were entrusted with.

Affected by the Mankato Clinic data breach? Fill out the form on this page today.

Impacted Data:

• Social Security Number

• Date of Birth

• Medical Information

• Health Insurance Information

• Diagnosis

• Medical Record Number

• Name

• Medical Billing/Claims Information

• Physician Information