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ISC2 Systems Security Certified Practitioner (SSCP) Practice Question

Your Linux workloads run on older EC2 instances that use the Xen hypervisor. AWS has just disclosed a vulnerability that lets a malicious guest read host memory, enabling a VM-escape across tenants. As the security engineer, which immediate action provides the strongest protection against this risk while minimizing downtime?

  • Move the instances into a separate VPC subnet protected by restrictive network ACL rules that block all inter-subnet traffic.

  • Install host-based intrusion detection agents on each guest to monitor for anomalous kernel-level behavior.

  • Schedule weekly Amazon Inspector scans on the instances to identify and patch operating system vulnerabilities.

  • Re-launch the instances on Nitro-based EC2 instance families (for example, M6i or C6g) that use a minimized, hardware-enforced hypervisor for stronger tenant isolation.

ISC2 Systems Security Certified Practitioner (SSCP)
Systems and Application Security
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