✅ Security Features Implemented:
- Input Validation - Whitelist approach
- Data Sanitization - HTML encoding
- Length Limits - Prevent buffer overflow
- Type Checking - Validate data types
- SQL Injection Prevention - Parameterized queries
// ✅ SECURE: Input validation functions
function validateEmail(email) {
const emailRegex = /^[^\s@]+@[^\s@]+\.[^\s@]+$/;
return emailRegex.test(email);
}
function validatePhone(phone) {
const phoneRegex = /^[\d\s\-\(\)]{10,}$/;
return phoneRegex.test(phone);
}
function sanitizeInput(input) {
return input.replace(/[<>]/g, '').trim();
}
// ✅ SECURE: Length validation
function validateLength(input, min, max) {
return input.length >= min && input.length <= max;
}