Kooijman Vianen (kooijmanvianen.nl) Listed by fog Ransomware Group

On January 23, 2025, the Dutch company Kooijman Vianen appeared on the leak site of the fog ransomware group, with attackers claiming to have exfiltrated 25.7 GB of internal files.

Reported Details of the Incident

Public reporting indicates the company, which operates the domain kooijmanvianen.nl, was listed after failing to meet the group's demands. The posted sample data totals 25.7 GB and consists of what the attackers describe as sensitive internal documents. No confirmed customer records or personal data types have been independently verified in the initial listing, though the volume suggests a broad exfiltration from the company's internal systems. The incident follows the typical ransomware pattern of initial compromise, data theft, and subsequent extortion pressure.

Why This Matters for You and Your Family

When a business like Kooijman Vianen suffers a breach, the ripple effects often reach ordinary people. If you or your family have done business with them — whether as customers, suppliers, or through shared professional networks — your contact details, invoices, contracts, or correspondence could be among the stolen files. Credential leaks from such incidents frequently appear in follow-on data dumps, giving criminals the raw material they need to attempt account takeovers on email, banking, or shopping sites where you reuse passwords. For families this can mean sudden identity theft, fraudulent loans in a teenager's name, or strangers contacting your children through details pulled from seemingly harmless business records.

The Doxxing and Identity-Chain Risks

Stolen internal files often contain email addresses, phone numbers, employee names, and project details that attackers can cross-reference with other breaches. This creates an identity chain: one leaked work email leads to a personal account, which reveals family member names, addresses, and even children's online handles. Public reporting shows these chains frequently end in doxxing, harassment, or targeted scams. Gaming accounts belonging to children are especially vulnerable because usernames and emails reused from family business interactions can be hijacked, exposing chat logs, location data, and payment information.

Fog Ransomware Group's Known Track Record

Public reporting attributes the fog ransomware group with emerging in 2024 and quickly building a reputation for aggressive double-extortion tactics. The group has listed victims ranging from small manufacturers to regional service firms, typically gaining initial access through compromised remote desktop credentials or phishing. Once inside, they exfiltrate data before encrypting systems, then demand payment to prevent publication. Their leak site serves as both a shaming platform and a marketplace for unsold data, a playbook seen in several incidents throughout 2024 and into 2025.

What to do

• Run a DoxxScan to map every link between your handles, emails, phone numbers, and real identity, with cleanup handled by the service.
• Enable continuous DoxxScan monitoring across 13.1B+ breach records and 100+ platforms so the next exposure of your information is caught in hours rather than months.
• Rotate any password you used at Kooijman Vianen or related services anywhere it has been reused, and switch on 2FA through an authenticator app instead of SMS.
• Cover the household with DoxxScan family coverage that extends to dependents and children's gaming accounts that often chain back to the same addresses and emails.
• Let remediation specialists handle takedown requests across data brokers and leak sites for you while you focus on securing your own accounts.

The speed with which ransomware groups like fog move means ordinary families must treat every business breach as a potential personal threat. Starting with clear steps to understand your exposure and close off the chains that lead to doxxing can make the difference between a news story and a crisis at your kitchen table. DoxxScan by GalaxyWarden delivers exactly that protection through its continuous monitoring across 13.1B+ breach records and 100+ platforms, AI-powered identity-chain mapping, hands-on remediation by specialists, and family coverage that includes children's gaming accounts.