株式会社 KKS

The organization is known by the aliases 株式会社 KKS, 株式会社ケイ・ケイ・エス, and KKS LTD.
Its headquarters is located in Japan.
On November 5, 2022, the organization experienced a cybersecurity incident.
The incident involved unauthorized access to its servers.
This unauthorized access potentially exposed customer personal information.
The types of information that may have been exposed include names, company details, contact information, and order histories.
The intrusion was carried out using the ransomware variant known as LOCKBIT2.0.

LOCKBIT2.0 encrypted the organization's internal data during the attack.
The attackers gained entry by exploiting security vulnerabilities in internet‑facing systems.
Forensic analysis conducted after the incident found no evidence that data was exfiltrated from the network.
The same analysis also found no evidence of subsequent misuse of any information.
Despite these findings, the organization stated that it could not definitively rule out the possibility of information leakage.
In response, the organization immediately isolated the affected network segments.
It also engaged external cybersecurity experts to assist with the investigation and remediation.

Servers were restored from clean backups as part of the recovery process.
The organization upgraded its antivirus software to improve detection capabilities.
Access monitoring systems were implemented to better detect anomalous activity.
Certificate‑based external access controls were introduced to strengthen authentication.
Following the completion of the investigation, the organization notified relevant authorities about the incident.
Affected individuals were also notified in accordance with disclosure obligations.
These actions collectively represent the organization's response to the 2022 ransomware event.