Mass General Brigham Incorporated data breach

Clerk's notes

On October 23, 2025, Mass General Brigham Incorporated submitted a data security incident report to the New Hampshire Attorney General's office. This filing confirms that the prominent healthcare system experienced unauthorized access to its internal systems. This incident may have impacted individuals whose personal information is maintained by the organization.

If you have received an official data breach notification letter from Mass General Brigham, it signifies that your personal information was potentially compromised. The company's notification serves to inform you about the event and provide guidance on steps you can take to safeguard your data.

While the specific types of information involved in this particular incident remain unspecified in the public filing, individuals who receive notification should be aware of the general risks associated with compromised personal data. This can include potential identity theft or other misuse of your information.

To protect yourself, it is advisable to carefully review the notification letter for any specific recommendations from Mass General Brigham. Consider placing a fraud alert or security freeze on your credit reports. Regularly monitor your financial statements and explanation of benefits for any unusual activity.

Individuals who received a data breach notification letter from Mass General Brigham may be eligible for a free case review. This evaluation can help you understand your legal options and determine if further action is warranted in light of this data security incident. Requesting a review does not create an attorney-client relationship.

If a notification letter about this breach reached you, see every New Hampshire data breach on file or browse all cases.