Delta Dental of California Cyberattack
The Health Insurance Portability and Accountability Act of 1996 (HIPAA) requires Sharp Health Plan to notify potentially affected individuals of improper disclosures of Protected Health
On November 17, 2023, Delta Dental of California, a Sharp Health Plan business associate, confirmed that it was one of the many organizations worldwide affected by a data breach involving the MOVEit Transfer software application. The vulnerability in the MOVEit software
affected over 2,600 organizations and tens of millions of individuals.
The investigation confirmed that Sharp Health Plan information hosted by Delta Dental of California on the MOVEit platform had been accessed and acquired without authorization between May 27, 2023, and May 30, 2023. Delta Dental of California engaged independent third-party experts
in computer forensics, analytics, and data mining to determine what information was impacted and with whom it is associated, determining in July of 2023 that Sharp Health Plan data may have been affected, in November of 2023 that Sharp Health Plan
data was affected, and in late December which individual Sharp Health Plan members may have been affected. They also notified law enforcement.
The information compromised may have included the member’s first and last name, social security number, dental provider name, health insurance and treatment cost information. The information did not include bank account or credit/payment card information. Additionally, this incident did not involve unauthorized access to Sharp Health Plan computer systems.
Delta Dental of California is mailing notification letters to individuals whose information was involved in this incident. This message constitutes substitute notice for those individuals who were unable to be reached directly. We sincerely regret this incident occurred
and are taking appropriate measures to do everything that we reasonably can to prevent any similar incident in the future.
If you have any questions or believe you may have been one of the individuals with an unknown address, please contact Delta Dental of California’s dedicated call center at 1-800-693-2571 Monday through Friday from 6:00 am to 3:30 pm Pacific Time or 9:00 am to
6:30 pm Eastern Time.