Onsite Mammography Data Breach – Investigated by Federman & Sherwood
Oklahoma City, Oklahoma (April 25, 2025) – On October 4, 2024, Onsite Mammography detected suspicious activity involving an employee’s email account. In response, the company initiated an investigation with help from third-party cybersecurity experts to assess the nature and scope of the incident. The investigation determined that an unauthorized party had accessed the email account for a limited time. A thorough review, completed on February 21, 2025, revealed that the account contained personal and/or sensitive information of approximately 357,265 individuals.
Based on available information, the compromised data may include names, Social Security numbers, medical details, and dates of birth. On April 22, 2025, Onsite Mammography publicly disclosed the breach in a filing with the Maine Attorney General’s Office and began notifying affected individuals.
Federman & Sherwood is thoroughly investigating the allegations to determine the full scope of the incident, including the potential compromise of additional data and the overall reach of the exposure. The firm urges all affected individuals and organizations to stay alert and take appropriate measures to safeguard their personal and financial information.
The type of information potentially exposed includes:
- Name
- Social Security number
- Date of birth
- Medical information
- Other sensitive information
What is Onsite Mammography?
Based in Westfield, Massachusetts, Onsite Women’s Health operates more than 150 locations across the country and employs over 200 professionals. The company oversees every aspect of its in-office services, including staffing, equipment upkeep, regulatory compliance, and integration with electronic medical records. This enables partner practices to provide comprehensive breast imaging services without requiring additional infrastructure.
If you have received a data breach notification and would like more information, are considering your legal options, or wish to join the case, please contact Federman & Sherwood at info@federmanlaw.com or visit www.federmanlaw.com.
FEDERMAN & SHERWOOD
(405) 235-1560