Aws Security Audit

• CloudTrail disabled
• CloudWatch alarms missing
• VPC Flow Logs disabled
• S3 access logging disabled
• Config recording disabled

Security Audit Commands

IAM Security Checks

# List users without MFA
aws iam get-credential-report --output text | \
  awk -F, '$4=="false" && $1!="<root_account>" {print $1}'

# Find unused IAM users (no activity in 90 days)
aws iam list-users --query 'Users[*].[UserName]' --output text | \
while read user; do
  last_used=$(aws iam get-user --user-name "$user" \
    --query 'User.PasswordLastUsed' --output text)
  echo "$user: $last_used"
done

# List overly permissive policies (AdministratorAccess)
aws iam list-policies --scope Local \
  --query 'Policies[?PolicyName==`AdministratorAccess`]'

# Find access keys older than 90 days
aws iam list-users --query 'Users[*].UserName' --output text | \
while read user; do
  aws iam list-access-keys --user-name "$user" \
    --query 'AccessKeyMetadata[*].[AccessKeyId,CreateDate]' \
    --output text
done

# Check root account access keys
aws iam get-account-summary \
  --query 'SummaryMap.AccountAccessKeysPresent'

Network Security Checks

# Find security groups open to the world
aws ec2 describe-security-groups \
  --query 'SecurityGroups[?IpPermissions[?IpRanges[?CidrIp==`0.0.0.0/0`]]].[GroupId,GroupName]' \
  --output table

# List public S3 buckets
aws s3api list-buckets --query 'Buckets[*].Name' --output text | \
while read bucket; do
  acl=$(aws s3api get-bucket-acl --bucket "$bucket" 2>/dev/null)
  if echo "$acl" | grep -q "AllUsers"; then
    echo "PUBLIC: $bucket"
  fi
done

# Check VPC Flow Logs status
aws ec2 describe-vpcs --query 'Vpcs[*].VpcId' --output text | \
while read vpc; do
  flow_logs=$(aws ec2 describe-flow-logs \
    --filter "Name=resource-id,Values=$vpc" \
    --query 'FlowLogs[*].FlowLogId' --output text)
  if [ -z "$flow_logs" ]; then
    echo "No flow logs: $vpc"
  fi
done

# Find RDS instances without encryption
aws rds describe-db-instances \
  --query 'DBInstances[?StorageEncrypted==`false`].[DBInstanceIdentifier]' \
  --output table

Data Protection Checks

# Find unencrypted EBS volumes
aws ec2 describe-volumes \
  --query 'Volumes[?Encrypted==`false`].[VolumeId,Size,State]' \
  --output table

# Check S3 bucket encryption
aws s3api list-buckets --query 'Buckets[*].Name' --output text | \
while read bucket; do
  encryption=$(aws s3api get-bucket-encryption \
    --bucket "$bucket" 2>&1)
  if echo "$encryption" | grep -q "ServerSideEncryptionConfigurationNotFoundError"; then
    echo "No encryption: $bucket"
  fi
done

# Find RDS snapshots that are public
aws rds describe-db-snapshots \
  --query 'DBSnapshots[*].[DBSnapshotIdentifier]' --output text | \
while read snapshot; do
  attrs=$(aws rds describe-db-snapshot-attributes \
    --db-snapshot-identifier "$snapshot" \
    --query 'DBSnapshotAttributesResult.DBSnapshotAttributes[?AttributeName==`restore`].AttributeValues' \
    --output text)
  if echo "$attrs" | grep -q "all"; then
    echo "PUBLIC SNAPSHOT: $snapshot"
  fi
done

# Check KMS key rotation
aws kms list-keys --query 'Keys[*].KeyId' --output text | \
while read key; do
  rotation=$(aws kms get-key-rotation-status --key-id "$key" \
    --query 'KeyRotationEnabled' --output text 2>/dev/null)
  if [ "$rotation" = "False" ]; then
    echo "Rotation disabled: $key"
  fi
done

Logging & Monitoring Checks

# Check CloudTrail status
aws cloudtrail describe-trails \
  --query 'trailList[*].[Name,IsMultiRegionTrail,LogFileValidationEnabled]' \
  --output table

# Verify CloudTrail is logging
aws cloudtrail get-trail-status --name my-trail \
  --query 'IsLogging'

# Check if AWS Config is enabled
aws configservice describe-configuration-recorders \
  --query 'ConfigurationRecorders[*].[name,roleARN]' \
  --output table

# List S3 buckets without access logging
aws s3api list-buckets --query 'Buckets[*].Name' --output text | \
while read bucket; do
  logging=$(aws s3api get-bucket-logging --bucket "$bucket" 2>&1)
  if ! echo "$logging" | grep -q "LoggingEnabled"; then
    echo "No access logging: $bucket"
  fi
done

Automated Security Audit Script

#!/bin/bash
# comprehensive-security-audit.sh

echo "=== AWS Security Audit Report ==="
echo "Generated: $(date)"
echo ""

# IAM Checks
echo "## IAM Security"
echo "Users without MFA:"
aws iam get-credential-report --output text | \
  awk -F, '$4=="false" && $1!="<root_account>" {print "  - " $1}'

echo ""
echo "Root account access keys:"
aws iam get-account-summary \
  --query 'SummaryMap.AccountAccessKeysPresent' --output text

# Network Checks
echo ""
echo "## Network Security"
echo "Security groups open to 0.0.0.0/0:"
aws ec2 describe-security-groups \
  --query 'SecurityGroups[?IpPermissions[?IpRanges[?CidrIp==`0.0.0.0/0`]]].GroupId' \
  --output text | wc -l

# Data Protection
echo ""
echo "## Data Protection"
echo "Unencrypted EBS volumes:"
aws ec2 describe-volumes \
  --query 'Volumes[?Encrypted==`false`].VolumeId' \
  --output text | wc -l

echo ""
echo "Unencrypted RDS instances:"
aws rds describe-db-instances \
  --query 'DBInstances[?StorageEncrypted==`false`].DBInstanceIdentifier' \
  --output text | wc -l

# Logging
echo ""
echo "## Logging & Monitoring"
echo "CloudTrail status:"
aws cloudtrail describe-trails \
  --query 'trailList[*].[Name,IsLogging]' \
  --output table

echo ""
echo "=== End of Report ==="

Security Score Calculator

#!/usr/bin/env python3
# security-score.py

import boto3
import json

def calculate_security_score():
    iam = boto3.client('iam')
    ec2 = boto3.client('ec2')
    s3 = boto3.client('s3')
    
    score = 100
    issues = []
    
    # Check MFA
    try:
        report = iam.get_credential_report()
        users_without_mfa = 0
        # Parse report and count
        if users_without_mfa > 0:
            score -= 10
            issues.append(f"{users_without_mfa} users without MFA")
    except:
        pass
    
    # Check open security groups
    sgs = ec2.describe_security_groups()
    open_sgs = 0
    for sg in sgs['SecurityGroups']:
        for perm in sg.get('IpPermissions', []):
            for ip_range in perm.get('IpRanges', []):
                if ip_range.get('CidrIp') == '0.0.0.0/0':
                    open_sgs += 1
                    break
    
    if open_sgs > 0:
        score -= 15
        issues.append(f"{open_sgs} security groups open to internet")
    
    # Check unencrypted volumes
    volumes = ec2.describe_volumes()
    unencrypted = sum(1 for v in volumes['Volumes'] if not v['Encrypted'])
    
    if unencrypted > 0:
        score -= 20
        issues.append(f"{unencrypted} unencrypted EBS volumes")
    
    print(f"Security Score: {score}/100")
    print("\nIssues Found:")
    for issue in issues:
        print(f"  - {issue}")
    
    return score

if __name__ == "__main__":
    calculate_security_score()

Compliance Mapping

CIS AWS Foundations Benchmark

• 1.1: Root account usage
• 1.2-1.14: IAM policies and MFA
• 2.1-2.9: Logging (CloudTrail, Config, VPC Flow Logs)
• 4.1-4.3: Monitoring and alerting

PCI-DSS

• Requirement 1: Network security controls
• Requirement 2: Secure configurations
• Requirement 8: Access controls and MFA
• Requirement 10: Logging and monitoring

HIPAA

• Access controls (IAM)
• Audit controls (CloudTrail)
• Encryption (EBS, RDS, S3)
• Transmission security (TLS/SSL)

Remediation Priorities

Critical (Fix Immediately)

• Root account access keys
• Public RDS snapshots
• Security groups open to 0.0.0.0/0 on sensitive ports
• CloudTrail disabled

High (Fix Within 7 Days)

• Users without MFA
• Unencrypted data at rest
• Missing VPC Flow Logs
• Overly permissive IAM policies

Medium (Fix Within 30 Days)

• Old access keys (>90 days)
• Missing S3 access logging
• Unused IAM users
• KMS key rotation disabled

Example Prompts

• "Run a comprehensive security audit on my AWS account"
• "Check for IAM security issues"
• "Find all unencrypted resources"
• "Generate a security compliance report"
• "Calculate my AWS security score"

Best Practices

• Run audits weekly
• Automate with Lambda/EventBridge
• Export results to S3 for trending
• Integrate with SIEM tools
• Track remediation progress
• Document exceptions with business justification

Kiro CLI Integration

kiro-cli chat "Use aws-security-audit to assess my security posture"
kiro-cli chat "Generate a security audit report with aws-security-audit"

Additional Resources

• AWS Security Best Practices
• CIS AWS Foundations Benchmark
• AWS Security Hub

Limitations

• Use this skill only when the task clearly matches the scope described above.
• Do not treat the output as a substitute for environment-specific validation, testing, or expert review.
• Stop and ask for clarification if required inputs, permissions, safety boundaries, or success criteria are missing.