A final challenge relating to recovery from ransomware attacks is insurance. Cyber security and ransomware-specific policies are essential, ensuring there is no ambiguity relating to claims for loss and damages, as famously reported in 2019, when top UK law firm DLA Piper and Hiscox clashed over a claim relating to the NotPetya attack in 2017.
Furthermore, insurers are continuing to demand demonstrable prevention and recovery measures are taken by firms to ensure reasonable steps have been taken to prevent data loss and recover systems in the event of a ransomware attack. This will commonly include essential services, such as endpoint detection and response, but may also require evidence of immutable backups and auditing of 3rd party supplier data protection measures.
An immutable backup is one that is locked after the point of creation, making it impossible to tamper with. These have become a critical security measure, as cybercriminals also target backup systems to increase the impact of their attacks. This is the base measure of protection, and should be accompanied by data diode considerations, physical separation, multi-factor authentication, and identity management.