A Uzzo Listed by Sinobi Ransomware Group

On December 16, 2025, accounting firm A. Uzzo & Company appeared on the leak site of the sinobi Ransomware Group, with internal files reportedly exfiltrated during a ransomware attack. Clients whose tax returns, financial records, or personal documents were handled by the Purchase, New York-based CPA firm may have had sensitive information exposed.

What Public Reporting Shows

Public reporting indicates that A. Uzzo & Company was listed on the sinobi leak site hosted at an onion address. The firm specializes in tax planning, estate and wealth advisory, accounting consulting, and personalized services for individuals, small businesses, and corporations. Available reporting describes the incident as a ransomware attack in which internal files were allegedly exfiltrated. The exact number of affected individuals remains unknown, and the specific types of documents posted have not been independently verified beyond the group’s claim of successful data theft.

Why This Matters for You and Your Family

If you or anyone in your household has used A. Uzzo & Company for tax preparation, financial planning, or advisory work, your tax returns, Social Security numbers, bank details, and estate-planning documents could be in the hands of criminals. This kind of breach is not abstract. Once stolen, your information can be sold, traded, or used to file fraudulent tax returns, open accounts in your name, or pressure you for ransom. Your family’s financial stability and credit can be damaged long after the initial breach is forgotten.

The Doxxing and Identity-Chain Implications

Ransomware groups rarely stop at one dataset. A single leaked tax document often contains your address, phone number, email, employer, and family member names. Attackers chain these details with usernames found on gaming platforms, social media, or older breaches. The result is a complete identity profile that can lead to doxxing, targeted phishing, or account takeovers. Credential leaks like this one cascade into gaming account takeovers when the same password or recovery email is reused for your children’s Fortnite, Roblox, or Steam accounts. What begins as an accounting breach can quietly become a household-wide privacy disaster.

Sinobi Ransomware Group’s Known Track Record

Public reporting attributes the attack to the sinobi Ransomware Group. The group emerged in recent years and follows a double-extortion playbook: it encrypts victim systems, exfiltrates data, then threatens to publish the files unless payment is made. Notable prior victims have included other professional-services firms and mid-sized organizations whose client records held high personal value. Typical tactics involve initial access through phishing or exploited remote-desktop services, followed by data exfiltration and publication on their leak site when demands are not met.

What to do

• Run a DoxxScan to map every link between your emails, phone numbers, usernames, and real identity so you can see exactly what chains back to the Uzzo breach.
• Rotate any password you ever used at A. Uzzo & Company wherever it has been reused, and switch on 2FA through an authenticator app instead of text messages.
• Enable continuous DoxxScan monitoring across 13.1B+ breach records and 100+ platforms so the next leak that touches your family is caught in hours rather than months.
• Cover the household with DoxxScan family protection that extends to dependents and children’s gaming accounts, which frequently become targets once an address or parent email is exposed.
• Let remediation specialists handle takedown requests across data brokers and leak sites while you focus on securing your accounts.

The incident shows that even long-established local firms can become gateways to personal exposure. Acting quickly on the information you control remains the most practical defense. DoxxScan by GalaxyWarden delivers continuous monitoring across 13.1 billion+ breach records and more than 100 platforms, AI-powered identity-chain mapping, hands-on remediation by specialists, and full household coverage that includes children’s gaming accounts. Start your DoxxScan trial today to map and close the gaps this claimed breach may have opened for you and your family.