Sprague & Jackson

Sprague & Jackson was compromised in a ransomware attack attributed to qilin in October 2025. 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.

qilin 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.

Sprague & Jackson, USA - Sprague & Jackson is a tax services firm that offers a range of client services including secure document submission and payment options. They provide personalized assistance through scheduled meetings to help clients ...

Intelligence correlations link this incident to 1 vulnerability(ies) including CVE-2026-0257, which may have been leveraged as initial access vectors or for lateral movement.