The latest exam syllabus data shows that the weight of AWS Network Firewall has increased by 40%, the number of Security Hub aggregation analysis scenario questions has increased by 35%, and 12 new practical questions on CloudTrail Lake data lake auditing have been added. It is recommended to focus on mastering the experimental design of the linkage between VPC flow logs and GuardDuty threat intelligence.

The practical solution is divided into three steps: ① Analyze the generalization problem of key administrator permissions through IAM policies ② Check the missing alarms for key disabling/deleting operations in CloudTrail logs ③ Use the AWS Config rule "kms-key-rotation-enabled" to automatically detect keys with a rotation cycle of more than 90 days, and provide a key lifecycle management mind map for download.

The "3+1" preparation model is adopted: 3 weeks of special training (Week1 data encryption tool chain practice/Week2 security group & NACL attack and defense simulation/Week3 compliance audit solution design) + 1 day of full-scale mock exam (including 3 sets of 2025 new question type simulation systems), combined with AWS official sandbox environment operation manual.

Combination of required components: CloudWatch cross-account log stream (accounting for 25%) + EventBridge event bus architecture (18%) + S3 bucket policy permission delegation (12%), with a focus on mastering the log aggregation mode under the Organizations service, and a multi-account monitoring topology diagram attached.

TOP3 frequent errors: ① Unlimited resource ARN leads to unauthorized access (accounting for 32%) ② Missing time window for conditional constraints (27%) ③ STS is not enabled in the permission transfer chain (19%), providing policy syntax checking tools and a practical case library for the principle of least privilege.