CSA Tax & Advisory
Attack Intelligence
CSA Tax & Advisory was compromised in a ransomware attack attributed to lynx in December 2025. The organization, operating in the Financial Services sector in Australia, was added to the group's data leak site as part of an extortion campaign.
lynx 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.
CSA Tax & Advisory is a licensed accounting firm based in Haverhill, MA, specializing in a wide range of services including personal financial planning, estate planning, and tax services. They cater to business owners, executives, and independent professionals, providing solutions for accounting, payroll, and tax problems. The firm is known for its professional and responsive service, ensuring each client receives personalized attention. With over 75 years of experience, CSA Tax & Advisory aims to help clients navigate complex tax laws and improve their financial well-being