carlysle.net

carlysle.net was compromised in a ransomware attack attributed to payload in March 2026. The organization, operating in an undisclosed sector in United States, was added to the group's data leak site as part of an extortion campaign.

payload operates as a financially motivated ransomware-as-a-service (RaaS) operation, exfiltrating sensitive data and threatening public disclosure to pressure victims into paying ransom demands.

Carlysle.net belongs to Carlysle Engineering, Inc., an engineering firm based in Boston. The company specializes in designing, installing, and maintaining fire protection systems such as sprinklers. They also provide building inspections and consulting services to ensure compliance with safety and insurance requirements.