Nephrology Associates data breach: ransomware on a Trumbull, Connecticut practice's server, September 8, 2026

Date	Event
September 8, 2026	Ransomware incident on a server with patient and employee information
November 6, 2026	Date on the letters; Massachusetts (149) and Vermont (36) log the notice
February 28, 2027	Deadline to enroll in the free monitoring

What happened at Nephrology Associates?

The practice says it secured its systems on discovery and brought in independent forensic experts. Their finding was that the files on the affected server were accessible to the unauthorized party, but that there was no evidence of removal. Ongoing monitoring has found no sign that the information has been published or offered for sale. The letter does not name a ransomware group or say how the attacker got in.

Was my information taken if nothing was removed?

The letter is careful on this point: the files were accessible, and the practice found no evidence they were taken. That is a finding about evidence, not a guarantee, which is why it is offering monitoring. Double extortion explains the case where attackers copy data before encrypting it; this letter reports no sign of that. Ransomware defines the term, and double extortion in breach notices compares how other letters describe theft and encryption.

What information was involved?

Data element	Named in the letter
Name	Yes
Health and medical information	Yes
Health insurance information (Medicare, Medicaid or private insurance ID number)	Yes
Other payment information	Yes
Social Security number and/or other government-issued ID number	Yes

Massachusetts marks Social Security numbers, medical records, financial account numbers, driver's licenses and credit or debit card numbers for this notice, and Vermont lists the same five categories in its own words. The letter says the information "may have included" these elements, so not every person had all of them.

What is Nephrology Associates offering?

Experian IdentityWorks for 24 months at no cost, with identity restoration available for 24 months from the date of the letter. Enroll by February 28, 2027 with the activation code in your letter, or call Experian at 1-833-918-5105, Monday through Friday, 9 am to 9 pm Eastern. The practice also recommends reviewing statements from your health insurer and healthcare providers and contacting them about any service you do not recognize.

Where can I compare this with other healthcare breaches?

The largest healthcare breaches of 2026 reported to HHS ranks the reports that have reached the federal list, healthcare provider breach notices shows what practices tell patients, and the health care hub lists every health care notice on record. How long companies take to notify after a breach puts this notice's 59 days beside the rest of the log.