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Visma Server Hacked for Bitcoin Mining with Personal Data at Risk

By Nordics Today News Team

A Visma server in Norway was compromised and used for Bitcoin mining for 18 months, exposing 17,000 personal records. The company detected the breach during routine security checks but decided against notifying affected users or filing police reports. No sensitive data was stored on the compromised server according to company officials.

Visma Server Hacked for Bitcoin Mining with Personal Data at Risk

A major Norwegian software company discovered one of its servers had been compromised and used for cryptocurrency mining. The breach exposed thousands of personal records belonging to users of a legal reference service.

The security incident affected Visma Software Nordic, a subsidiary of Norway's leading business software provider. Company officials confirmed unauthorized access to a database containing 17,000 entries with user information including names, email addresses, company details, and billing information.

Communications director Lage Bøhren explained the timeline in a statement. The intrusion began in early 2021 and continued undetected for approximately eighteen months until August 2022. The company discovered the breach during routine security analysis of their server infrastructure in July.

This incident raises serious questions about corporate cybersecurity practices in Norway's technology sector. Visma provides critical business systems including payroll and HR solutions to numerous companies, though the compromised server only contained data from a separate legal reference service called Oppslag Juridisk.

The company immediately isolated and secured the affected server upon discovery. They then notified Norway's Data Protection Authority about the potential exposure of personal information.

Bøhren emphasized the data did not include sensitive information or connect to customer payroll systems. The database contained login credentials and basic contact details rather than financial or confidential records.

Technical investigation found no evidence that personal information was extracted from the system. Still, investigators could not completely rule out the possibility of data theft.

The breach highlights ongoing cybersecurity challenges facing Nordic technology companies. Norway has strict data protection laws following GDPR implementation, requiring prompt reporting of security incidents involving personal data.

Visma decided against notifying affected individuals directly. Company officials determined the breach posed low risk to users since no sensitive data was involved. They also chose not to file a police report, citing the time elapsed since the mining activity occurred.

The company has since conducted security reviews of similar server environments to identify potential vulnerabilities. They continue evaluating the scope and consequences of the breach.

This incident serves as a reminder that even established technology companies face persistent cybersecurity threats. The eighteen-month duration before detection shows how sophisticated attackers can maintain unauthorized access while avoiding detection.

Norwegian data protection regulations require companies to implement appropriate security measures and promptly report breaches involving personal data. The Data Protection Authority will likely review Visma's handling of this incident given the extended period of unauthorized access.

Businesses using cloud services and remote systems should note this case demonstrates the importance of continuous security monitoring. Regular security audits remain essential for identifying unusual activity before significant damage occurs.

Published: November 12, 2025

Tags: Norway data breachVisma server hackBitcoin mining security incident