A snapshot is a point-in-time copy of the state of a virtual machine (VM) that can be used to restore the VM to a previous state in case of a security incident or a disaster. A snapshot can capture the VM’s disk, memory, and device configuration, allowing for a quick and easy recovery of the VM’s data and functionality. Snapshots can also be used to create backups, clones, or replicas of VMs for testing, analysis, or migration purposes. Snapshots are a common service offering in Infrastructure as a Service (IaaS) models, where customers can provision and manage VMs on demand from a cloud service provider (CSP). A CSP that offers the capability to take snapshots of VMs can assist customers when recovering from a security incident by providing them with the following benefits12:
Faster recovery time: Snapshots can reduce the downtime and data loss caused by a security incident by allowing customers to quickly revert their VMs to a known good state. Snapshots can also help customers avoid the need to reinstall or reconfigure their VMs after an incident, saving time and resources.
Easier incident analysis: Snapshots can enable customers to perform online or offline analysis of their VMs after an incident, without affecting the production environment. Customers can use snapshots to examine the VM’s disk, memory, and logs for evidence of compromise, root cause analysis, or forensic investigation. Customers can also use snapshots to test and validate their incident response plans or remediation actions before applying them to the production VMs.
Enhanced security posture: Snapshots can improve the security posture of customers by enabling them to implement best practices such as backup and restore, disaster recovery, and business continuity. Snapshots can help customers protect their VMs from accidental or malicious deletion, corruption, or modification, as well as from environmental or technical disruptions. Snapshots can also help customers comply with regulatory or contractual requirements for data retention, availability, or integrity. References = What is Disaster Recovery as a Service? | CSA - Cloud Security Alliance, What Is Cloud Incident Response (IR)? CrowdStrike
