The victim, a prominent classification society, is also known for its marine fleet management software.
According to sources, on January 7th, the servers of its fleet management software were shut down, following a ransomware attack. Following the attack, the server environment underwent extensive rebuilding. The affected servers were sequestered from the broader IT infrastructure, with a subsequent forensic investigation.
Consequently, about 70 customers and approximately 1,000 vessels using the service were impacted by the disruption (it is wrong to say that 1,000 vessels were targeted by the ransomware attack, as can be sometimes read. Communications have been ongoing with these affected parties.