Healthcare

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investigation open

Updated 16 days ago

Mankato Clinic Data Breach

▼ Key takeaways

•Reports suggest a potential breach involving Mankato Clinic.
•Discovered on September 10, 2026.
•Possible data exposed: SSN.
•Affects individuals in: Minnesota.
•Confirmation level: Based on reports.

Detailed summary

On September 10, 2026, RansomLook recorded a post identifying mankatoclinic.com as a victim associated with the Chaos group. A separate report cited by ClassAction.org said Chaos claimed to have exfiltrated 610 gigabytes of data from Mankato Clinic in an attack estimated to have occurred that day. Mankato Clinic has not publicly confirmed the incident in the sources reviewed.

The affected individual count and specific data types remain unknown. The available reports do not establish whether Social Security numbers, medical information, or financial information were involved. No official regulator filing or consumer notification was identified in the sources reviewed.

The available information reflects an unconfirmed report as of September 13, 2026. Further details about the scope of the incident, affected individuals, and compromised information may emerge later.

Data possibly involved

SSN
Can be used to open fraudulent accounts and file false tax returns

Company Response Timeline

Breach Occurred

Sep 10, 2026

Company Discovered

Unknown

Regulator Notified

Unknown

Consumers Notified

Unknown

Breach Verification Status

Reports Only

Current

Initial dark web reports of potential breach

Company Confirmed

Company has acknowledged the breach

Regulator Confirmed

Confirmed by regulatory authorities

Note: Breach verification can take time. Information may evolve as more details become available from companies and regulators.

Case Status:

Investigation Open

We're actively investigating this case and seeking affected individuals.

Were you affected? Submit your information below.

Were You Affected By This Breach?

If you are a customer or have received a data breach notification, you may submit your information as part of our ongoing investigation. Submitting your information is free and does not obligate you.

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Check Your Risk Level

Answer a few questions to understand how this breach might affect you

Do you use Mankato Clinic?

Yes

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What should I do?

Change your passwords

Update passwords for the affected service and any accounts using the same password

Enable two-factor authentication

Add an extra layer of security to your accounts

Monitor your accounts

Watch for suspicious activity on your financial and online accounts

Watch for phishing attempts

Be cautious of emails or messages claiming to be from the affected company

Consider a credit freeze

Prevent unauthorized access to your credit report

Scan your email for other exposures

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