Mass. Data Breach
Mass. experienced a data breach that was reported on December 11, 2025. Major data breach involving Mass.' largest health insurer exposes Social Security numbers
Key Facts
- Organization
- Mass.
- Date Reported
- December 11, 2025
- Incident Type
- supply chain
- Severity Score
- 5/10
- Confidence Level
- medium
- Tags
Source
View original source - External link to primary source documentation
Understanding supply chain Incidents
Supply chain attacks compromise trusted vendors or software to access downstream targets. Vendor security assessments and software integrity verification reduce exposure.