Sebastian García
Cybersecurity & AppSec Specialist
Securing digital assets through penetration testing, secure code review, and cloud security architecture. Every line of code is a potential entry point—I make sure it’s not.
Security-First Approach
This portfolio itself demonstrates security best practices. Every component is hardened, every input validated, every header secured.
Secure by Design
Built with security headers, CSP policies, input validation, and rate limiting. View the live security analysis to see how.
Threat Detection
Specialized in OWASP Top 10, vulnerability assessment, and penetration testing across web applications and cloud infrastructure.
Risk Mitigation
From secure coding practices to incident response planning. Every vulnerability is an opportunity to strengthen defenses.
Recent Security Projects
A selection of applications and systems I’ve secured, analyzed, and hardened.
APEX AI Solutions
Secured a complete SaaS application from the ground up. Implemented authentication with Clerk, protected 40+ API endpoints with middleware validation, and established comprehensive security headers and CSP policies.
This Portfolio Site
This website itself is a security project. Every header, validation rule, and component demonstrates cybersecurity best practices. Click below to see the live security analysis.
Professional Security Services
From penetration testing to cloud security reviews, get enterprise-grade security expertise tailored for SMBs and startups.
Explore Services →Security Insights & Best Practices
Learn from real-world security implementations and get practical guides for securing modern web applications.
Read the Blog →