1.1.6 Isolating AWS resources - Isolating AWS resources is a vital part of cloud incident response, designed to quickly contain security threats and minimize damage in AWS environments. This process involves segregating compromised assets, such as EC2 instances, RDS databases, or S3 buckets, using network and access controls like security groups and resource policies. Automation through AWS services like Lambda and EventBridge can accelerate isolation, triggered by alerts from tools like GuardDuty and Security Hub. Effective isolation strategies should be tailored to each resource and documented in detailed playbooks, with careful mapping of dependencies to prevent business disruption. Following best practicesincluding least privilege, standardized incident data, and regular testingensures fast, precise, and minimally disruptive isolation. Real-world scenarios, like quarantining a breached EC2 instance or locking down an exposed S3 bucket, demonstrate the critical role of isolation, ultimately supporting compliance and robust cloud security.
