Cloud Infrastructure Hardening: Zero Trust, CIS Benchmarks & Runtime Defense
Securing cloud environments requires a layered defense posture spanning network boundaries, host nodes, container runtimes, and identity orchestration.
1. Principle of Least Privilege in Cloud IAM
Role-Based Access Control (RBAC) should enforce narrow service perimeters:
- Temporary short-lived tokens instead of static API keys.
- Continuous permission pruning based on CloudTrail and IAM Access Advisor telemetry.
- Automated pipeline scanning for over-permissioned IAM policies.
2. Container Runtime Security & Seccomp Profiles
Production Kubernetes clusters must reject root containers and restrict syscalls:
- Dropping default Linux capabilities (
CAP_SYS_ADMIN,CAP_NET_RAW). - Applying custom seccomp and AppArmor profiles to eliminate kernel exploits.
- Implementing runtime anomaly detection with eBPF probes.
3. Automated Compliance & Infrastructure Auditing
Every Terraform and Kubernetes manifest must pass automated CIS Benchmark scanning before deployment to eliminate configuration drift.
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