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2024-06-20Hünkar Döner

AWS Security Best Practices: Example Scenarios from Turkey

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AWS Security Best Practices: Example Scenarios from Turkey

Cloud Security involves very different dynamics than traditional data center security. AWS defines security as the top priority (Job Zero) and delineates boundaries with the "Shared Responsibility Model". AWS is responsible for "security of the cloud" (physical data centers, cables, server hardware). The customer is responsible for "security in the cloud" (operating system patches, firewall settings, data encryption).

Companies in Turkey need to be extra sensitive about cloud security, especially due to KVKK (Law on Protection of Personal Data) requirements. Here are the best practices to be implemented to ensure security on AWS:

1. Identity Management: IAM and MFA

The vast majority of security breaches stem from stolen passwords or misconfigured permissions.

  • Lock the Root Account: Never use the root user you opened your AWS account with for daily tasks. Store it in a secure place.
  • Least Privilege Principle: Ensure that an employee or service has only the minimum permissions necessary to do their job.
  • MFA (Multi-Factor Authentication): Enforce MFA for all users. This prevents account takeover even if the password is stolen.

2. Data Encryption and KVKK

Protecting personal data is essential for KVKK compliance. AWS makes encryption quite easy.

  • At Rest: Encrypt files in your Amazon S3 buckets, EBS volumes, and RDS databases with a single click using AWS KMS (Key Management Service).
  • In Transit: Ensure that your data is encrypted (TLS/SSL) while being transferred over the internet or between services. Use up-to-date SSL certificates on CloudFront and Load Balancer (AWS Certificate Manager is free).

3. Monitoring and Detection: CloudTrail and GuardDuty

You cannot protect what you cannot see.

  • AWS CloudTrail: Keeps a log of every action taken in your account (Logging). Who called which API and when? These records should be kept for forensic analysis and audits.
  • Amazon GuardDuty: An AI-powered threat detection service. It alerts you when there is unusual activity in your account (e.g., bitcoin mining from your server or access attempts from the Tor network).

4. Infrastructure Security: VPC and WAF

  • VPC Design: Do not expose your servers directly to the internet. Use Private Subnets. Manage traffic coming from the outside world via Load Balancer and NAT Gateway.
  • AWS WAF (Web Application Firewall): Activate WAF rules to protect your web applications from common attacks like SQL Injection, XSS. With Geo-blocking, you can cut off traffic from countries you do not serve.

5. Security Assessment

Use AWS Security Hub at regular intervals or have third-party tools conduct penetration tests (Pentest) to ensure the security of your system.

Security is a continuous process and cannot be neglected. You can get "Security Assessment" service from an expert AWS Consultancy firm to strengthen your company's security posture and ensure KVKK compliance.