6 AWS Security Misconfigurations You Should Never Ignore
Small configuration mistakes can create serious cloud-security risks. Here are six common problems highlighted in my cloud-security practical workbook.
1. Sharing Root Credentials
Risk: Excessive privileged access.
Fix: Use individual identities, least privilege, and MFA.
2. Open Security Groups
Risk: SSH or RDP exposed to the internet through
0.0.0.0/0.Fix: Restrict access to trusted sources and approved paths.
3. Public S3 Buckets
Risk: Sensitive files may be exposed.
Fix: Review bucket permissions and block unnecessary public access.
4. Excessive IAM Permissions
Risk: Users can perform actions beyond their responsibilities.
Fix: Scope policies to the specific actions and resources required.
5. Weak Encryption Controls
Risk: Incorrect key permissions can undermine data protection.
Fix: Review encryption settings and KMS key access.
6. Missing Audit Logs
Risk: Suspicious changes become harder to investigate.
Fix: Use CloudTrail to identify who acted, what changed, when it happened, and the result.
Final Checklist
- Restrict access and permissions.
- Protect sensitive data.
- Secure network boundaries.
- Review audit events.
- Remove temporary lab resources.
Final takeaway: Secure the access. Protect the data. Investigate the evidence.
Which misconfiguration would you fix first in a new AWS environment—and why?
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