| Arkansas Total Care, Inc. | AR | Health Plan | 578 | 09/21/2023 | Hacking/IT Incident | Network Server | Yes | |
| Virginia Dept. of Medical Assistance Services | VA | Health Plan | 1229333 | 09/18/2023 | Hacking/IT Incident | Network Server | Yes | |
| Nuance Communications, Inc. | MA | Business Associate | 1225054 | 09/15/2023 | Hacking/IT Incident | Network Server | Yes | |
| VA Dept. of Medical Assistance Services | VA | Health Plan | 928 | 09/14/2023 | Hacking/IT Incident | Network Server | Yes | |
| Pharm-Pacc Corporation | FL | Business Associate | 3749 | 09/12/2023 | Hacking/IT Incident | Network Server | Yes | |
| Sutter North Surgery Center | CA | Healthcare Provider | 861 | 09/08/2023 | Hacking/IT Incident | Network Server | Yes | |
| Laboratory Corporation of America Holdings dba LabCorp | NC | Healthcare Provider | 1431 | 09/08/2023 | Unauthorized Access/Disclosure | Other | No | |
| Ryders Health Management LLC | CT | Healthcare Provider | 7252 | 09/07/2023 | Hacking/IT Incident | Network Server | No | |
| United Healthcare Services, Inc. Single Affiliated Covered Entity | CT | Health Plan | 315915 | 09/07/2023 | Unauthorized Access/Disclosure | Network Server, Other | No | |
| Roseman University of Health Sciences | NV | Healthcare Provider | 4622 | 09/06/2023 | Hacking/IT Incident | Network Server | No | |
| Amerita | KS | Healthcare Provider | 219707 | 09/05/2023 | Hacking/IT Incident | Network Server | No | |
| Delta Dental of California | CA | Health Plan | 500 | 09/05/2023 | Hacking/IT Incident | Network Server | No | |
| Bloom Health Centers | MD | Healthcare Provider | 1545 | 09/01/2023 | Unauthorized Access/Disclosure | Email | No | |
| North Mississippi Medical Center, Inc. | MS | Healthcare Provider | 950 | 09/01/2023 | Hacking/IT Incident | Email | No | |
| MedMinder Systems, Inc. | MA | Healthcare Provider | 12146 | 09/01/2023 | Hacking/IT Incident | Network Server | No | |
| Enzo Clinical Labs, Inc. | NY | Healthcare Provider | 1700 | 08/31/2023 | Hacking/IT Incident | Network Server | No | |
| Mountain View Family Practice, PC | MA | Healthcare Provider | 5139 | 08/31/2023 | Hacking/IT Incident | Electronic Medical Record, Network Server | No | |
| Indiana University Health | IN | Health Plan | 1191 | 08/31/2023 | Hacking/IT Incident | Network Server | Yes | |
| TTEC Healthcare Solutions | CO | Business Associate | 2953 | 08/30/2023 | Unauthorized Access/Disclosure | Other | Yes | |
| O'Neil Digital Solutions, LLC | CA | Business Associate | 1722 | 08/30/2023 | Unauthorized Access/Disclosure | Paper/Films | Yes | |
| PurFoods, LLC | IA | Healthcare Provider | 1229333 | 08/25/2023 | Hacking/IT Incident | Network Server | No | |
| Associates in Pediatric Dentistry | LA | Healthcare Provider | 9703 | 08/25/2023 | Hacking/IT Incident | Email | No | |
| Data Media Associates | GA | Business Associate | 74730 | 08/24/2023 | Hacking/IT Incident | Other | Yes | |
| Detroit Central City Community Mental Health | MI | Healthcare Provider | 1412 | 08/24/2023 | Hacking/IT Incident | Email | No | |
| IEC Group, Inc. dba AmeriBen | ID | Business Associate | 74884 | 08/24/2023 | Unauthorized Access/Disclosure | Email | Yes | |
| Milan Eye Center | GA | Healthcare Provider | 67336 | 08/23/2023 | Hacking/IT Incident | Network Server | Yes | |
| PRIME THERAPEUTICS LLC | MN | Business Associate | 6050 | 08/23/2023 | Hacking/IT Incident | Network Server | Yes | |
| Vecino Health Centers | TX | Healthcare Provider | 1339 | 08/22/2023 | Hacking/IT Incident | Network Server | No | |
| Serco Inc. Group Health Plan | VA | Health Plan | 10140 | 08/22/2023 | Hacking/IT Incident | Network Server | Yes | |
| Absolute Dental Services | NC | Business Associate | 10037 | 08/21/2023 | Hacking/IT Incident | Email | Yes | |
| McAlester Regional Health Center | OK | Healthcare Provider | 500 | 08/21/2023 | Hacking/IT Incident | Desktop Computer, Network Server | No | |
| The University of Massachusetts Chan Medical School | MA | Business Associate | 134394 | 08/21/2023 | Hacking/IT Incident | Network Server | Yes | |
| Health Care Service Corporation | IL | Health Plan | 192231 | 08/21/2023 | Hacking/IT Incident | Network Server | Yes | |
| Illinois Department of Public Health | IL | Healthcare Provider | 126000 | 08/18/2023 | Hacking/IT Incident | Network Server | No | |
| Advanced Reproductive Health Center Ltd., d/b/a Chicago IVF | IL | Healthcare Provider | 2603 | 08/18/2023 | Hacking/IT Incident | Network Server | Yes | |
| UofL Health | KY | Healthcare Provider | 8175 | 08/18/2023 | Hacking/IT Incident | Network Server | No | |
| SouthCoast Medical Group, LLC | GA | Healthcare Provider | 501 | 08/17/2023 | Hacking/IT Incident | Network Server | No | |
| Morris Hospital & Healthcare Centers | IL | Healthcare Provider | 248943 | 08/17/2023 | Hacking/IT Incident | Network Server | No | |
| The Harris Center for Mental Health and IDD | TX | Healthcare Provider | 599367 | 08/17/2023 | Hacking/IT Incident | Network Server, Other | Yes | |
| Blue Cross Blue Shield of Arizona | AZ | Health Plan | 47485 | 08/17/2023 | Hacking/IT Incident | Network Server | Yes | |
| SysInformation Healthcare Services, LLC | TX | Business Associate | 501 | 08/17/2023 | Hacking/IT Incident | Network Server | Yes | |
| United Healthcare Services, Inc. Single Affiliated Covered Entity | CT | Health Plan | 527 | 08/17/2023 | Hacking/IT Incident | Network Server | Yes | |
| Baesman Group, Inc. | OH | Business Associate | 24757 | 08/17/2023 | Hacking/IT Incident | Network Server | Yes | |
| SUNY at Buffalo School of Dental Medicine | NY | Healthcare Provider | 765 | 08/16/2023 | Hacking/IT Incident | Network Server | Yes | |
| A-Family Dental Care Center PC | PA | Healthcare Provider | 2800 | 08/16/2023 | Unauthorized Access/Disclosure | Network Server | No | |
| Kennedy University Hospital, Inc. t/a Jefferson Health | NJ | Healthcare Provider | 4140 | 08/15/2023 | Unauthorized Access/Disclosure | Other Portable Electronic Device | No | |
| Performance Health Technology | OR | Business Associate | 1750000 | 08/15/2023 | Hacking/IT Incident | Network Server | Yes | |
| University of Utah | UT | Health Plan | 3914 | 08/15/2023 | Hacking/IT Incident | Network Server | Yes | |
| Monocacy Valley Dental Brian K. Motz, DDS, PC | MD | Healthcare Provider | 4000 | 08/15/2023 | Theft | Laptop | No | |
| Nice Pak Products Inc., Health and Welfare Benefits Plan | NJ | Health Plan | 8487 | 08/14/2023 | Hacking/IT Incident | Network Server | No | |
| TRACT Radiology | MS | Business Associate | 7810 | 08/14/2023 | Hacking/IT Incident | Network Server | Yes | |
| VNS Health Plans | NY | Health Plan | 103775 | 08/14/2023 | Hacking/IT Incident | Network Server | Yes | |
| United Bankshares, Inc. | DC | Business Associate | 8801 | 08/11/2023 | Hacking/IT Incident | Other | Yes | |
| American National Group, LLC | TX | Health Plan | 47711 | 08/11/2023 | Hacking/IT Incident | Network Server | No | |
| Colorado Department of Health Care Policy & Financing | CO | Health Plan | 4091794 | 08/11/2023 | Hacking/IT Incident | Network Server | Yes | |
| Three Crowns Park | IL | Healthcare Provider | 516 | 08/11/2023 | Hacking/IT Incident | Email | No | |
| El Centro Del Barrio d/b/a CentroMed | TX | Healthcare Provider | 350000 | 08/11/2023 | Hacking/IT Incident | Network Server | No | |
| EMS Management and Consultants Inc | NC | Business Associate | 223598 | 08/10/2023 | Hacking/IT Incident | Network Server | Yes | |
| Coastal Orthopedics & Sports Medicine of Southwest Florida | FL | Healthcare Provider | 501 | 08/10/2023 | Hacking/IT Incident | Network Server | No | |
| iTrust Wellness Group | SC | Healthcare Provider | 981 | 08/10/2023 | Hacking/IT Incident | Email | No | |
| Allison Transmission Inc. Health Care Program for Hourly Employees / Wellness Program for Salaried Employees | IN | Business Associate | 5330 | 08/10/2023 | Hacking/IT Incident | Network Server | Yes | |
| Madera County | CA | Health Plan | 1146 | 08/09/2023 | Unauthorized Access/Disclosure | Email | No | |
| Virginia Dept. of Medical Assistance Services | VA | Health Plan | 423824 | 08/09/2023 | Hacking/IT Incident | Network Server | Yes | |
| Sovos Compliance LLC | MA | Business Associate | 4563 | 08/08/2023 | Hacking/IT Incident | Network Server | Yes | |
| Lurie Children’s Surgical Foundation | IL | Healthcare Provider | 1997 | 08/08/2023 | Hacking/IT Incident | Network Server | Yes | |
| Premera Blue Cross | WA | Health Plan | 33212 | 08/08/2023 | Hacking/IT Incident | Network Server | Yes | |
| Spinal and Sports Care Clinic PS | WA | Healthcare Provider | 1100 | 08/08/2023 | Hacking/IT Incident | Network Server | No | |
| Missouri Department of Social Services | MO | Health Plan | 739884 | 08/07/2023 | Hacking/IT Incident | Network Server | Yes | |
| Redwood Coast Regional Center | CA | Healthcare Provider | 1345 | 08/07/2023 | Hacking/IT Incident | Email | No | |
| Cranberry Township Emergency Medical Service | PA | Healthcare Provider | 1247 | 08/07/2023 | Hacking/IT Incident | Network Server | Yes | |
| Radius Global Solutions | MN | Business Associate | 600794 | 08/04/2023 | Hacking/IT Incident | Network Server | Yes | |
| Maximus, Inc. | VA | Business Associate | 932 | 08/04/2023 | Hacking/IT Incident | Network Server | Yes | |
| Indiana University Health | IN | Health Plan | 21383 | 08/04/2023 | Hacking/IT Incident | Network Server | Yes | |
| Capital Neurological Surgeons | CA | Healthcare Provider | 1769 | 08/04/2023 | Hacking/IT Incident | Email | No | |
| Brigham and Women's Hospital | MA | Healthcare Provider | 987 | 08/04/2023 | Unauthorized Access/Disclosure | Other | No | |
| Unum Group SACE | TN | Health Plan | 531732 | 08/03/2023 | Hacking/IT Incident | Network Server | No | |
| Self-insured group health plans sponsored by the City of Dallas | TX | Health Plan | 30253 | 08/03/2023 | Hacking/IT Incident | Network Server | No | |
| Cognizant Technologies Solutions U.S. Corporation | TX | Business Associate | 7313 | 08/03/2023 | Hacking/IT Incident | Network Server | Yes | |
| Advanced Care Partners, LLC | GA | Healthcare Provider | 518 | 08/03/2023 | Unauthorized Access/Disclosure | Email | No | |
| Plumbers Local 8 Health & Welfare Fund | MO | Health Plan | 4790 | 08/02/2023 | Hacking/IT Incident | Email | No | |
| Grane Supply, Inc. | PA | Healthcare Provider | 798 | 08/01/2023 | Unauthorized Access/Disclosure | Email | No | |
| The Health Plan of West Virginia, Inc. | WV | Health Plan | 1292 | 08/01/2023 | Hacking/IT Incident | Network Server | No | |
| HCA Healthcare | TN | Business Associate | 11270000 | 07/31/2023 | Hacking/IT Incident | Other | Yes | |
| Johns Hopkins Health System Corporation | MD | Business Associate | 2584 | 07/31/2023 | Hacking/IT Incident | Network Server | Yes | |
| Howard County General Hospital | MD | Healthcare Provider | 2975 | 07/31/2023 | Hacking/IT Incident | Network Server | Yes | |
| Synergy Healthcare Services | GA | Business Associate | 25772 | 07/31/2023 | Hacking/IT Incident | Network Server | Yes | |
| UC Davis Health | CA | Healthcare Provider | 3201 | 07/28/2023 | Hacking/IT Incident | Email | No | |
| Baylor College of Medicine | TX | Healthcare Provider | 504 | 07/28/2023 | Hacking/IT Incident | Network Server | Yes | |
| Dean Health Service Company, LLC (referenced herein as "WellFirst Health") | MN | Business Associate | 1027 | 07/28/2023 | Hacking/IT Incident | Network Server | Yes | |
| United Healthcare Services, Inc. Single Affiliated Covered Entity | CT | Health Plan | 398319 | 07/28/2023 | Hacking/IT Incident | Network Server | No | |
| Jefferson County Health Center | IA | Healthcare Provider | 53827 | 07/28/2023 | Hacking/IT Incident | Network Server | No | |
| The Chattanooga Heart Institute | TN | Healthcare Provider | 170450 | 07/28/2023 | Hacking/IT Incident | Network Server | No | |
| Allegheny County | PA | Healthcare Provider | 689686 | 07/28/2023 | Hacking/IT Incident | Network Server | No | |
| Florida Health Sciences Center, Inc. dba Tampa General Hospital | FL | Healthcare Provider | 2430920 | 07/28/2023 | Hacking/IT Incident | Network Server | No | |
| Centers for Medicare & Medicaid Services | MD | Health Plan | 1362470 | 07/28/2023 | Hacking/IT Incident | Network Server | Yes | |
| Gladden Farms Family Dentistry | AZ | Healthcare Provider | 3085 | 07/27/2023 | Hacking/IT Incident | Network Server | No | |
| CareSource | OH | Health Plan | 3180537 | 07/27/2023 | Unauthorized Access/Disclosure | Network Server | No | |
| Saint Francis Health System | OK | Healthcare Provider | 18911 | 07/26/2023 | Hacking/IT Incident | Network Server | No | |
| Hillsborough County, Florida (County Government) | FL | Healthcare Provider | 70636 | 07/26/2023 | Hacking/IT Incident | Other | No | |
| Life Management Center of Northwest Florida, Inc. | FL | Healthcare Provider | 19107 | 07/25/2023 | Hacking/IT Incident | Network Server | No | |