Application Security
Securing software applications throughout the development lifecycle
Application security encompasses the measures taken throughout the software development lifecycle to prevent vulnerabilities in applications. It involves implementing security controls, practices, and tools to identify, fix, and prevent security issues in software applications.
Core Principles
- • Security by design
- • Defense in depth
- • Principle of least privilege
- • Input validation and sanitization
- • Secure authentication and authorization
Common Vulnerabilities
- • Injection attacks (SQL, XSS, CSRF)
- • Broken authentication
- • Sensitive data exposure
- • XML External Entities (XXE)
- • Insecure deserialization
The Secure Development Lifecycle (SDLC)
Integrating security throughout the development process is essential for building secure applications. The Secure Development Lifecycle incorporates security at every stage:
Requirements & Planning
Define security requirements, threat modeling, risk assessment
Design
Security architecture, secure design patterns, attack surface reduction
Implementation
Secure coding practices, code reviews, static analysis
Testing
Security testing, dynamic analysis, penetration testing
Deployment
Secure configuration, hardening, vulnerability scanning
Maintenance
Security monitoring, patch management, incident response
Certified Secure Coder
Intermediate level certification
Certified Security Fundamentals
Beginner level certification
This comprehensive guide covers secure coding practices across multiple programming languages, focusing on input validation, output encoding, and proper error handling.
Learn how to perform security testing on web applications using industry-standard tools and methodologies. This video tutorial covers OWASP ZAP, Burp Suite, and manual testing techniques.
This guide explains how to perform threat modeling during the design phase to identify potential security issues before writing code. Learn the STRIDE methodology and practical application.