Every public data breach

47 disclosed this week · 26,367 on record

Advanced Data Processing

Disclosed Nov 28, 201210,000 affectedConfirmed

Official notice

On or around June 15, 2012, an employee of the covered entity (CE), Advanced Data Processing, Inc. (ADP), dba Intermedix, who had access to patients’ protected health information (PHI) as part of her job, inappropriately accessed the PHI of approximately 10,000 individuals and sold the information to third parties. An addendum to the initial breach report, submitted on April 3, 2015, expanded the breach to an additional 2,360 individuals. The PHI involved in the breach included patient names, social security numbers, addresses, dates of birth, claims, and other financial information. The CE provided breach notification to HHS, affected individuals, and the media and posted substitute notice. Following the breach, the CE engaged a third party to review its network environment and make recommendations for security enhancements. It implemented data loss prevention technology to identify electronic PHI and block transmittal of sensitive information and a log management and analysis solution to automate collection, analysis, archival and recovery of log data. The CE implemented policies and procedures for disposal and reuse of mobile devices, as well as for the secure transport of sensi

What is known

People affected10,000 (as reported to HHS)
DisclosedNov 28, 2012
HappenedJun 15, 2012
AttackLost or stolen device
Data exposedNamesHealth
SectorTech · US
StatusConfirmed

Sources

Notices filed

Other breaches at Advanced Data Processing

History of this record
attack2026-09-25
unknown to lost-deviceby backfillSource
data_types2026-09-25
[] to ["names","health"]by backfillSource
records_basis2026-09-25
empty to hhsby backfillSource
records2026-09-25
empty to 10000by backfillSource
summary2026-09-25
empty to On or around June 15, 2012, an employee of the covered entity (CE), Advanced Data Processing, Inc. (ADP), dba Intermedix, who had access to patients’ protected health information (PHI) as part of her job, inappropriately accessed the PHI ofby backfillSource
Added2026-09-25
First recordedby backfillSource

First seen 2026-09-25 (California AG), confirmed by California AG. Record counts are as reported. Not legal advice.

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