CCJM Listed by sinobi Ransomware Group

On December 3, 2025, engineering firm CCJM appeared on the leak site of the sinobi ransomware group, with internal files exfiltrated during a ransomware attack. The breach affects anyone whose personal or project data was stored in the company’s systems, including clients, employees, subcontractors, and their families whose information may have been contained in contracts, invoices, personnel records, or related documents.

What Public Reporting Shows

Public reporting indicates that sinobi listed CCJM on its dark-web leak portal after the firm apparently did not meet the group’s demands. The exposed material consists of internal files exfiltrated during the ransomware incident. No exact victim count inside CCJM or among its clients has been published. The company, founded in 1979, provides engineering services in buildings, civil infrastructure, transportation, water management, energy, and smart technology for both public- and private-sector clients. Available reporting describes the data as sensitive internal documents but does not yet detail specific record types such as names, addresses, Social Security numbers, or financial information.

Why This Matters for You and Your Family

When an engineering firm like CCJM is breached, the ripple effects reach ordinary people. Your home address, phone number, email, or project details may sit inside contracts, permitting files, or vendor lists. If that information reaches criminals, it can be sold, combined with other leaks, and used for identity theft, phishing, or harassment. Children’s records sometimes appear in family-related project files or employee benefits documents, exposing them to long-term risks. Even if you never directly hired CCJM, public-sector projects often create overlapping data trails that can link back to your household.

The Doxxing and Identity-Chain Implications

Ransomware leaks rarely stop at one company. Criminals harvest email addresses, usernames, and project references, then cross-reference them against other breaches. A single exposed work email can reveal personal accounts, linked phone numbers, and even children’s gaming usernames if the same credentials were reused. These connections form identity chains that turn one leak into repeated targeting. Credential leaks like this one frequently cascade into account takeovers on gaming platforms, social media, and email, enabling doxxing that publishes home addresses, family photos, and phone numbers. Once the information is public, removal becomes difficult and time-consuming.

Sinobi’s Publicly Known Track Record

Public reporting attributes the sinobi ransomware group with operations that emerged in recent years. The group follows a typical double-extortion playbook: it gains initial access, exfiltrates data, encrypts systems, then demands payment while threatening to publish the stolen files. Notable prior victims include other mid-sized firms whose internal documents were posted on dedicated leak sites when ransom deadlines passed. Exact timelines and full victim lists remain limited in open sources, but the pattern is consistent—access, theft, encryption, and public shaming.

What to do

• Run a DoxxScan to map every link between your handles, emails, phone numbers, and real identity, then use the cleanup of Warden to remove what you can.
• Rotate the password you used at CCJM or any related vendor account anywhere it is reused, and switch on 2FA through an authenticator app rather than text messages.
• Enable continuous DoxxScan monitoring across 13.1B+ breach records and 100+ platforms so the next exposure of your information is caught in hours, not months.
• Cover the household with DoxxScan family coverage that extends to dependents and children’s gaming accounts that often chain back to the same address or parent email.
• Let remediation specialists handle takedown requests across data brokers and leak sites for you while you focus on securing your own accounts.

The incident underscores that ransomware groups continue to target companies whose client data directly touches everyday households. Protecting yourself requires immediate action on exposed credentials and ongoing vigilance against the identity chains that follow. DoxxScan by GalaxyWarden delivers continuous monitoring across 13.1 billion+ breach records and more than 100 platforms, AI-powered identity-chain mapping that connects online handles to real identities, and hands-on remediation by specialists who manage takedowns—coverage that includes your family and children’s gaming accounts vulnerable to the same credential-stuffing attacks seen after breaches like this one.