Am I Exposed?
Onsite Mammography data breach settlement
Onsite Mammography settled a data breach claim for $2,520,000, with up to $5,000 per person. The claim window closed on August 11, 2026, so this one can no longer be claimed — but new settlements open all the time, and some are paying out right now. The free check tells you in seconds whether your email is in a breach that still pays.
The numbers
| Settlement fund | $2,520,000 |
|---|---|
| Maximum per person | $5,000 |
| What it covered | Up to $5,000 in out-of-pocket expenses and a pro rata cash payment |
| Claim deadline (passed) | August 11, 2026 |
| Final approval hearing | September 9, 2026 |
| Case | Clarkson, et al. v. Onsite Mammography LLC , Case No. 3:25-cv-11123-MGM, in the U.S. District Court for the District of Massachusetts |
Who was covered
The Onsite Mammography class action settlement benefits individuals who received a data breach notice from Onsite Mammography informing them that their information may have been compromised in October 2024.
What was exposed
- Social Security Number
- Date of Birth
- Medical Information
- Name
What is on the record
The incident is recorded as April 2025, about 357,265 people were affected, and notice went to attorneys general in 1 state.
The case was first listed on April 22, 2025. A settlement followed.
Where to claim
The administrator’s site is OnsiteSettlement.com. The window is closed, so it is there for the record, not to file.
Source: Top Class Actions · ClassAction.org
Being in the breach is not the same as being in the class. Class membership usually turns on having received the company’s own notice letter, and only the settlement administrator can confirm it. We are not lawyers, we take no fee from any claim, and we never file on anyone’s behalf.
Check your own exposure
Free, no account, and we do not store your address. If a company that leaked your data ends up paying, that is how you find out in time.
Check my email