McIntosh Laboratory, Inc. Data Breach

▼ Key takeaways

•Reports suggest a potential breach involving McIntosh Laboratory, Inc..
•Discovered on May 8, 2026.
•Affects individuals in: California.
•Confirmation level: Confirmed by regulators.

Breach confirmed

The McIntosh Laboratory, Inc. breach is confirmed. If you may be affected, add your details below and we will take it from there.

Detailed summary

McIntosh Laboratory, Inc. reported a data breach to the California Attorney General. The California filing lists breach dates of October 6 and October 24, 2025. A breach investigation report states that McIntosh detected suspicious activity on October 21, 2025 and that unauthorized access may have occurred between October 17 and October 19, 2025.

The number of affected individuals and the specific information involved have not been publicly disclosed in the available sources. McIntosh began mailing notification letters to affected individuals on December 17, 2025. The available sources do not establish whether Social Security numbers, medical information, or financial information were involved.

Breach Verification Status

Reports Only

Complete

Initial dark web reports of potential breach

Company Confirmed

Complete

Company has acknowledged the breach

Regulator Confirmed

Current

Confirmed by regulatory authorities

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

Case Status:

Monitoring

We're monitoring this situation for developments.

Were You Affected By This Breach?

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Check Your Risk Level

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Do you use McIntosh Laboratory, Inc.?

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What should I do?

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