This BTS Korean website implements comprehensive security measures following industry best practices:

• Content Security Policy (CSP): Prevents XSS attacks with strict script and style sources
• X-Content-Type-Options: Prevents MIME type sniffing attacks
• X-Frame-Options: Prevents clickjacking attacks
• Strict-Transport-Security: Enforces HTTPS connections
• X-XSS-Protection: Browser-level XSS protection
• Referrer-Policy: Controls referrer information leakage

• All user inputs are validated and sanitized
• HTML entity encoding prevents XSS attacks
• URL validation prevents malicious redirects
• JSON data validation prevents prototype pollution

• Parameterized queries prevent SQL injection
• Connection pooling with proper error handling
• Secure credential management via environment variables
• Database connection encryption

• No innerHTML usage with user data
• Proper DOM manipulation for all dynamic content
• Content Security Policy enforcement
• Input sanitization at all entry points

• Rate limiting considerations
• Efficient algorithms (Big O optimized)
• Memory-efficient data structures
• Throttled event handlers

• Comprehensive error logging
• Security event monitoring
• Professional error handling
• Audit trail capabilities

If you discover a security vulnerability, please report it to:

• Email: security@bts-website.com
• Create a private security advisory on GitHub

This website follows:

• OWASP Top 10 security guidelines
• Enterprise security standards
• Professional development practices
• Zero-trust security principles