Massachusetts Mammography Mayhem: 350,000 Patients’ Data Breached in Email Snafu
Onsite Mammography warns 350,000 patients of a data breach involving sensitive information like Social Security numbers and medical records. The breach, discovered in October 2024, was traced to unauthorized access to an employee’s email. Onsite assures no other systems were compromised and offers free credit monitoring as a peace offering.

Hot Take:
Looks like Onsite Mammography has taken the phrase “breaching boundaries” a bit too literally. This time, though, it wasn’t about exploring new frontiers in healthcare but rather offering an uninvited glimpse into the personal lives of over 350,000 patients. Maybe they should stick to mammograms and leave the breaches to the hackers!
Key Points:
- Onsite Mammography reveals data breach affecting 357,265 people.
- October 2024 breach involved unauthorized access to an employee’s email account.
- Compromised information includes PII and PHI, like Social Security numbers and health details.
- Onsite is providing 12 months of free credit monitoring and identity protection services.
- No evidence of data misuse, and details on the breach origin remain undisclosed.
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