KNOWLEDGE BASE
Data Security in Cloud-Based Enterprise Software
Table of Contents — English
The Right Question: Who Provides Security?
The question 'Will my data be safe if I move to the cloud?' is poorly framed. Cloud environments are not inherently insecure; security vulnerabilities stem from architectural design, misconfiguration, and management errors. The right question is: at which layer, who, and how is security provided?
The Shared Responsibility Model
In cloud services, security responsibility is shared between the provider and the customer. The provider takes responsibility for infrastructure, network, and physical security; the customer manages data classification, access controls, and application security.
Encryption: The Most Fundamental Security Layer
Encryption ensures that data becomes meaningless in the event of unauthorized access. In enterprise software, encryption is applied in two states: in transit and at rest.
Critical Encryption Standards
- TLS 1.3: Transport encryption for web applications and API communication
- AES-256: The industry standard for database and file storage
- Customer-managed keys (BYOK): Keeping the encryption key independent of the provider
- HSM (Hardware Security Module): Hardware-level security for key management
Identity and Access Management (IAM)
Even the strongest encryption becomes meaningless if the wrong person has access rights. IAM controls which user can access which data under what conditions.
IAM Best Practices
- Multi-factor authentication (MFA): Mandatory for every user
- Principle of least privilege: A user can access only the data they need
- Role-based access control (RBAC): Authorization based on position
- Session management: Automatic session termination and activity monitoring
- Privileged Access Management: An additional security layer for administrator accounts
Compliance (KVKK/GDPR) and the Cloud
For companies operating in Türkiye, the Personal Data Protection Law (KVKK) binds data processing and storage conditions to a legal framework. When using cloud infrastructure, the following points should be considered for compliance:
- Data location: Whether personal data is processed within Türkiye's borders
- Data transfer: KVKK requirements for transferring data abroad
- Data retention: Retention periods and automatic deletion mechanisms
- Personal data inventory: Documenting which data is stored where
- Third-party audits: DPA (Data Processing Agreement) requirements
AI Perspective: 2026–2030
AI-powered security systems have reached the level of detecting and responding to anomalous behavior in real time. The next step is proactive systems that predict security breaches. As enterprise software providers integrate these capabilities into their platforms, the customer's security burden will decrease — but responsibility for authority and oversight will always remain with the customer.
FREQUENTLY ASKED QUESTIONS
Key Takeaways
- Cloud security is addressed in four layers: infrastructure, encryption, identity management, compliance.
- The Shared Responsibility Model clarifies provider and customer roles.
- MFA and least privilege principle are the lowest-cost, highest-impact security measures.
- Compliance must be addressed proactively as part of technical development.
- A pre-prepared incident response plan for data breaches is a legal requirement.
