Summit Tax Advisory, a U.S. financial services firm, was hit by a ransomware attack on March 30, 2026. The Qilin ransomware group claimed responsibility for the attack and threatened to publish stolen data if negotiations for payment were not initiated.
Specific details regarding the types of data exposed, the number of individuals affected, and the states impacted have not been publicly confirmed. There is no information available regarding whether Social Security numbers, financial data, or medical data were involved. The incident is recent, and information on notifications to consumers or regulators, official breach letters, or company statements has not yet been released.
Information about this incident may evolve as ongoing monitoring continues.