Healthcare

Medium

investigation open

Updated 16 days ago

Massachusetts General Brigham Medical Group Data Breach

▼ Key takeaways

•Reports suggest a potential breach involving Massachusetts General Brigham Medical Group.
•Discovered on September 19, 2026.
•Possible data exposed: Name, Date of Birth, Driver's License Number, Social Security Number, Address, Email Address, Telephone Number, Protected Health Information.
•Affects individuals in: Massachusetts.
•Confirmation level: Confirmed by company.

Breach confirmed

The Massachusetts General Brigham Medical Group breach is confirmed. If you may be affected, add your details below and we will take it from there.

Detailed summary

In August 2026, Massachusetts General Brigham Medical Group inadvertently sent a patient's protected health information to another patient through its secure portal. The company notified the patient of this incident on or about September 19, 2026.

Data involved in the incident includes Name, Date of Birth, Driver's License Number, Social Security Number, Address, Email Address, and Telephone Number. Free credit monitoring is being offered to affected individuals. The specific number of individuals affected has not been publicly confirmed.

Details may emerge as the situation progresses. Official notifications or regulatory filings for this specific incident have not been widely located in public sources beyond the initial report.

Data possibly involved

Name
Date of Birth
Often used in combination with other data for identity theft
Driver's License Number
Can be used for identity fraud
Social Security Number
Can be used to open fraudulent accounts and file false tax returns
Address
Could be combined with other data for identity theft
Email Address
Increases risk of phishing attacks and account takeovers
Telephone Number
May be used for SIM swapping or targeted scam calls
Protected Health Information

Company Response Timeline

Response Grade

Notified consumers within 30 days of discovery

Breach Occurred

Aug 26, 2026

Company Discovered

Aug 26, 2026

Regulator Notified

Unknown

Consumers Notified

Sep 19, 2026

0 days to discover

24 days to notify consumers

Breach Verification Status

Reports Only

Complete

Initial dark web reports of potential breach

Company Confirmed

Current

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.

Were you in the Massachusetts General Brigham Medical Group breach? Check your email

Free scan against known breach datasets. Then remove your info from data-broker sites with Data Shield.

No signup required. 30-second scan. Your email is only stored if you opt into alerts.

Get your info off data-broker sites

Data Shield files removal requests with every broker that accepts an authorized agent, and gives you the exact link or letter for the brokers that only accept requests from you.

See how Data Shield works

Check Your Risk Level

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

Do you use Massachusetts General Brigham Medical Group?

Yes

What state are you in?

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

Check whether this address shows up in other known breaches. Free, no account.

Get your info off data-broker sites

Data Shield files removal requests with every broker that accepts an authorized agent, and gives you the exact link or letter for the brokers that only accept requests from you.

See how Data Shield works