HackingStolen CredentialsSupply Chain (3P Vendor)Customer Data InvolvedIDENTITY_BASICIDENTITY_GOVERNMENTMediumContained
Mercadien, P.C.
bd_e800608fcd7bbdbe · schema v1 · pii pii-v1
Full breach record for Mercadien, P.C. →Pinnacle Financial Partners, Inc. notified Massachusetts residents of a data breach involving its third-party vendor, Mercadien, P.C. Unauthorized access occurred between September 17, 2025, and October 9, 2025, affecting customer names, addresses, and government identifiers. Pinnacle offered credit monitoring services. The incident was contained, and law enforcement was notified.
Massachusetts clock✗ MA AG >90d34 weeks discovery → filing
⚠ unattributedNo provenance was recorded for this discovery date and it matches no other date on the record. It may be correct, but it is not independently grounded.
Tracked as a single-filing incident — the only disclosure on record for this event so far.ConfirmedView incident
Source provenance
- Source URL
- https://www.mass.gov/doc/2026-1157-pinnacle-financial-partners-inc/download
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
- Filed at
- Jul 1, 2026
- Raw hash
- 59633c127f2ec8bd250bfe641eabb13c1e5d09d0eeafab2b304a82cd13f11524
Reporting entity
- Name
- Pinnacle Financial Partners, Inc.norm: pinnacle financial
- Domain
- pnfp.com
Victim entity
- Name
- Mercadien, P.C.norm: mercadien
Incident
- Discovered
- Nov 7, 2025
- Materiality determined
- —
- Notification sent
- Jul 16, 2026
- Affected individuals
- Not disclosed
- Data types
- IDENTITY_BASICIDENTITY_GOVERNMENT
- Attack vector
- Unauthorized Access
- MITRE ATT&CK
- T1078 Valid Accounts
- Threat actor
- External
- Initial access
- valid_credentials
Compliance
- Time to disclose
- 34 weeks(236 days from discovery to filing)
- Compliance flags
- MA AG >90d
- Discovery-date grounding
- unattributedNo provenance was recorded for this discovery date and it matches no other date on the record. It may be correct, but it is not independently grounded.
Extraction provenance
- Status
- No extraction artifact recorded for this disclosure.