Two more ransomware incidents that occurred in 2023 were disclosed this week. One was disclosed 10 months after the incident, and the other was disclosed 5 months after the incident.
Kisco Senior Living
On or about June 15, 2023, BlackByte claimed responsibility for a ransomware attack on Kisco. This week, Kisco filed a notification with the California Attorney General’s Office. Their notice states that they experienced a network disruption on June 6. They claim that on April 9, 2024, they learned that personal data was involved.
Kisco does not explain why it took 10 months to determine that. Nor do they tell those affected that this was a ransomware attack and the threat actors threatened to sell the data.
What happened to the stolen data affecting 26,683 residents? Did Kisco ever follow up by searching the dark web to see if the data showed up anywhere or was listed as sold? Should they have told those being notified about the ransomware gang’s attempt to extort them and their response?
The notification does not disclose details that DataBreaches thinks might make a difference to patients.
Blackstone Valley Community Health Care
On December 12, 2023, the Hunters International group claimed responsibility for an attack on Blackstone Valley Community Health Care in Rhode Island. But it wasn’t until April 18, 2024 that BCVHC notified the 34,416 people affected.
According to their notice, BVCHC experienced a disruption in their computer network on November 11.
We immediately initiated an investigation and engaged digital forensics experts to assist us with the process. …. This process concluded on March 11, 2024, at which time we determined that your information may have been involved. Since that time. We have worked diligently to arrange for written notice of this event. The information may have included your name, medical information, and Social Security number.
Once again, an entity does not reveal that the “disruption” was a ransomware attack and that the threat actors listed the incident on their leak site.
In December, months before patients were ever notified, the threat actors dumped 16.6 GB of files on their leak site that anyone could access. At last check, the data, some of which is patient data, is still available on the leak site.
Did Blackstone ever notify those patients that their data is freely available on the internet?
Update: In April, Blackstone also notified HHS of the incident. They reported that 34,518 patients were affected.