The US Tax Resolution firm Optima Tax Relief faced anarchy ransomware attack, in which danger actors now leaked the stolen data from the company.
Optima Tax Relief is a famous American tax resolution and settlement firm that helps individuals and businesses in addressing and fixing federal and state tax issues. The company has claimed to be the country’s major tax resolution firm, which is a solution of more than $ 3 billion in tax liabilities for customers.
Today, the Caos Rainsmware Gang added Optima Tax Relief on its data leak site, claiming to steal 69 GB of data.
Source: Bleepingcomputer
In this data, corporate data and customer case files appear. Tax documents usually contain sensitive personal information, such as social security numbers, phone numbers and home addresses, which can be used for malicious activity by theft of other danger actors or identity.
Sources with the knowledge of the attack told Bleepingcomputer that it was a dual-sealing attack, in which the danger actors not only stolen data from the company, but also encrypted the server.
Caus Rainmware is a relatively new ransomware operation Launched in March 2025When it claimed five victims on its data leak site.
The Rainsmware Gang should not be confused with the Caos Rainmware Builder, who is around From 2021 And is used to create innumerable branded encrypters used in fishing and malware campaigns.
The Caos Rainsmware also claimed to violate the Salvation Army, which did not respond to our questions last week.
Bleepingcomputer contacted Optima Tax Relief with questions about the attack and will update the story if we get a response.
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