A Russian-linked cybercriminal gang claims to have infiltrated dental referral and marketing service firm 1-800-Dentist and has threatened to leak the health data of millions of individuals, according to a story published June 30 on Cybernews.
On June 28, the Qilin ransomware gang published on its dark victim blog that it had stolen a cache of personal information files that are potentially linked to millions of people and dental practices from the Los Angeles-based 1-800-Dentist. Qilin did not disclose exactly how much or the type of data it had allegedly stolen, according to the story.
On its blog, the cybercriminals claimed it would leak the data soon if the company did not contact them. Additionally, Qilin threatened to leak the company’s sensitive data unless it paid an undisclosed ransom. Furthermore, Qilin posted 11 sample files from 1-800-Dentist to prove it had stolen data from the company, according to the story.
1-800-Dentist has not confirmed the hack.
1-800-Dentist serves more than 5,000 dental practices in the U.S., handles 70,000 average calls per month, and 2 million appointments have been scheduled via its platform, according to the company website.
Originally known as Agenda, Qilin emerged in 2022 as a ransomware as a service criminal operation that provides customizable malware platforms to affiliates.
In 2024, Qilin struck the medical lab Synnovis in the U.K., causing severe disruptions to National Health Service hospitals. The cybercriminals demanded a $50 million ransom.
In 2025, the group crippled manufacturing at Asahi Group Holdings, a brewing company in Japan.
