Back to the register
Cornerstone Municipal Advisory Group LLC dba Manquen Vance
ArchivedSubmitted 04/02/2021
- State
- MI
- Covered entity type
- Business Associate
- Individuals affected
- 9,202
- Business associate present
- Yes
- Type of breach
- Hacking/IT Incident
- Location of breached information
- First seen by InfoSec Signals
- 9/23/2026
- Last seen in OCR export
- 9/23/2026
OCR description
Cornerstone Municipal Advisory Group dba Manquen Vance, the business associate (BA), reported that an employee was the subject of an email phishing scheme that affected the protected health information (PHI) of 9,202 individuals. The PHI involved included names, addresses, birthdates, Social Security numbers, claims information, diagnoses, lab results, medications prescribed, and other treatment information. The BA notified HHS, affected individuals, the media, and provided substitute notice. In response to the breach, the BA provided complimentary credit monitoring services and implemented additional administrative, technical, and security safeguards to better protect its PHI. OCR provided the BA with technical assistance regarding its HIPAA Security Rule obligations.
Change history
- 9/23/2026Added to OCR's archive list
Source: U.S. Department of Health and Human Services, Office for Civil Rights, Breach Portal. Records are reproduced as published; entity names and figures are OCR's.