14/11/2026

Qilin ransomware: understanding its double-extortion model and what organizations should review

Qilin is a ransomware-as-a-service operation active since September 2022, using affiliates to breach organizations and deploy ransomware. It steals data before encrypting systems and threatens disclosure; organizations should review their ability to detect intrusions, data theft, and…

Qilin ransomware: understanding its double-extortion model and what organizations should review

At a glance

  • Qilin is a ransomware-as-a-service operation active since September 2022.
  • It uses double extortion: stealing data before encrypting systems.
  • Qilin recruits affiliates to breach organizations and deploy ransomware.
  • Prioritize reviewing detection of intrusions, data theft, and unauthorized encryption.
In this article

Krebs on Security describes efforts to trace the identity of a Qilin administrator using the alias Haise, and outlines the group’s operating model. The report is available in the original article.

Overview and technical details

Qilin is a ransomware-as-a-service (RaaS) operation that has been active since September 2022. It recruits affiliates to breach organizations and deploy ransomware. The article focuses on tracing an administrator who uses the alias Haise.

FieldDetails
Group / operationQilin, ransomware-as-a-service
Active sinceSeptember 2022
Article focusTracing an administrator using the alias Haise
SourceKrebs on Security

Affected systems

Qilin recruits affiliates to breach organizations and deploy ransomware. The information provided does not identify specific affected products or version branches; the activity described targets organizations.

Mechanism and impact

Qilin uses a double-extortion model: it steals sensitive data before encrypting systems, then threatens to publish the data. This combines the impact of encryption with the risk of data disclosure.

The group attracts affiliates by offering them at least 80% of extortion proceeds. The article says Qilin claims at least 365 victim organizations in the most recent three months; this is a figure claimed by the group.

Remediation and mitigation

  1. Prioritize reviewing the ability to detect intrusions into the organization.
  2. Review the ability to detect data theft.
  3. Review the ability to detect unauthorized encryption.

The information provided does not specify a patch, a particular mitigation, or a remediation deadline.

References