Why Is Security Critical in Software?

What Is Software Security?

Software security encompasses all technical and procedural measures aimed at making applications resistant to malicious use. Its goal is to ensure data confidentiality, integrity, and system availability.

Why Has Security Become Critical?

• Cyber attacks are increasing exponentially every year
• Data breaches damage brand reputation
• Regulations like KVKK and GDPR impose legal obligations
• Data security is vital in finance, healthcare, and education
• The rise of open source and integrations expands the attack surface

Common Attack Types

Software projects are often exposed to the following security threats:

• SQL Injection: Malicious queries injected into the database
• Cross-Site Scripting (XSS): Malicious code executed in the user’s browser
• CSRF: Unauthorized actions performed without the user’s knowledge
• DDoS: Excessive traffic overloads the server, causing downtime
• Authentication Flaws: Unauthorized access due to weak session controls

Secure Software Development Principles

Security must be planned from the very beginning and integrated throughout the development lifecycle. It should be prioritized during analysis, coding, and testing phases, not just at the end.

• Input validation and output encoding
• Encryption and hashing techniques
• Least privilege principle
• Session and token management (JWT, OAuth)
• Use of up-to-date libraries

Security Testing and Monitoring

To detect and prevent vulnerabilities early, proactive testing and monitoring systems must be established.

• Penetration testing
• Static and dynamic code analysis (SAST, DAST)
• Logging and anomaly detection
• Security Information and Event Management (SIEM) solutions
• Assessment based on OWASP Top 10

Frequently Asked Questions About Software Security