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+# API Security Cheat Sheet
+
+## Introduction
+
+This cheat sheet provides **enterprise-grade API security patterns** that apply across all API technologies. It focuses on architectural security not covered by protocol-specific implementations.
+
+### What This Sheet Covers
+
+**Enterprise Security Patterns:**
+
+- Multi-tenant isolation and data segregation
+- Cross-organization API federation
+- Centralized gateway security enforcement
+- Automated threat response and orchestration
+
+**Universal Security Controls:**
+
+- Technology-agnostic authentication and authorization
+- Cross-protocol rate limiting and throttling
+- Unified security testing approaches
+
+### What This Sheet Does NOT Cover
+
+**Protocol-Specific Security** (see dedicated sheets):
+
+- REST APIs → [REST Security Cheat Sheet](REST_Security_Cheat_Sheet.md)
+- GraphQL APIs → [GraphQL Cheat Sheet](GraphQL_Cheat_Sheet.md)
+- gRPC APIs → [gRPC Security Cheat Sheet](gRPC_Security_Cheat_Sheet.md)
+- WebSocket APIs → [WebSocket Security Cheat Sheet](WebSocket_Security_Cheat_Sheet.md)
+
+**Basic API Vulnerabilities:** See [OWASP API Security Top 10](https://owasp.org/www-project-api-security/) for foundational API security guidance
+
+## Enterprise Security Patterns
+
+### Multi-Tenant Isolation
+
+**Challenge:** Serving multiple customers from shared infrastructure while preventing data leakage
+
+**Applies to:** All API types (REST, GraphQL, gRPC, WebSocket)
+
+**Risk:** Data breaches, compliance violations, customer trust loss
+
+Implement strict tenant boundaries by validating access permissions and applying tenant-specific filters to all data operations. This ensures complete isolation between tenants at the application layer.
+
+```javascript
+// Universal tenant isolation middleware
+class TenantIsolationManager {
+    constructor(userService, auditLogger) {
+        this.userService = userService;
+        this.auditLogger = auditLogger;
+    }
+    
+    isolateTenant(request, tenantId) {
+        // Input validation
+        if (!tenantId || typeof tenantId !== 'string') {
+            throw new InvalidTenantIdError('Tenant ID must be a valid string');
+        }
+        
+        if (!this.validateTenantAccess(request.user, tenantId)) {
+            this.auditLogger.logUnauthorizedAccess(request.user.id, tenantId);
+            throw new UnauthorizedTenantAccessError('Access denied for tenant');
+        }
+        
+        return {
+            dataScope: `tenant_${this.sanitizeTenantId(tenantId)}.*`,
+            queryFilter: { tenant_id: tenantId },
+            rateLimitKey: `rate:${tenantId}:${request.user.id}`
+        };
+    }
+    
+    sanitizeTenantId(tenantId) {
+        return tenantId.replace(/[^a-zA-Z0-9_-]/g, '');
+    }
+    
+    validateTenantAccess(user, tenantId) {
+        return user.tenants && user.tenants.includes(tenantId);
+    }
+}
+
+// Custom error classes
+class InvalidTenantIdError extends Error {
+    constructor(message) {
+        super(message);
+        this.name = 'InvalidTenantIdError';
+    }
+}
+
+class UnauthorizedTenantAccessError extends Error {
+    constructor(message) {
+        super(message);
+        this.name = 'UnauthorizedTenantAccessError';
+    }
+}
+```
+
+### Cross-Organization Federation
+
+**Challenge:** Secure API communication between different organizations
+
+**Applies to:** B2B integrations, supply chain APIs, partner ecosystems
+
+**Risk:** Unauthorized access, policy conflicts, trust violations
+
+Establish mutual trust through certificate exchange and OAuth2 token validation, with dynamic trust scoring based on partner behavior. Trust levels determine access permissions and are continuously evaluated.
+
+```java
+// Federation security with trust scoring
+@Service
+@Transactional
+public class FederationSecurityManager {
+    
+    private final Map<String, TrustConfig> trustStore = new ConcurrentHashMap<>();
+    private final CertificateService certificateService;
+    private final AuditLogger auditLogger;
+    
+    public FederationSecurityManager(CertificateService certificateService, AuditLogger auditLogger) {
+        this.certificateService = certificateService;
+        this.auditLogger = auditLogger;
+    }
+    
+    public TrustConfig establishTrust(PartnerOrg partnerOrg) {
+        // Validate input
+        if (partnerOrg == null || StringUtils.isBlank(partnerOrg.getId())) {
+            throw new InvalidPartnerException("Partner organization must have valid ID");
+        }
+        
+        try {
+            TrustConfig config = TrustConfig.builder()
+                .mutualTLS(certificateService.exchangeCertificates(partnerOrg))
+                .tokenExchange(setupOAuth2Exchange(partnerOrg))
+                .trustScore(calculateInitialTrust(partnerOrg))
+                .establishedAt(Instant.now())
+                .expiresAt(Instant.now().plus(30, ChronoUnit.DAYS))
+                .build();
+                
+            trustStore.put(partnerOrg.getId(), config);
+            auditLogger.logTrustEstablished(partnerOrg.getId());
+            return config;
+        } catch (Exception e) {
+            auditLogger.logTrustFailure(partnerOrg.getId(), e.getMessage());
+            throw new TrustEstablishmentException("Failed to establish trust", e);
+        }
+    }
+    
+    public AccessDecision enforceAccess(HttpServletRequest request, PartnerContext context) {
+        TrustConfig config = trustStore.get(context.getPartnerId());
+        if (config == null || config.getExpiresAt().isBefore(Instant.now())) {
+            throw new ExpiredTrustException("Trust configuration expired or not found");
+        }
+        
+        double currentTrust = evaluateTrust(context);
+        double requiredTrust = getRequiredTrustLevel(request.getRequestURI());
+        
+        if (currentTrust < requiredTrust) {
+            auditLogger.logInsufficientTrust(context.getPartnerId(), currentTrust, requiredTrust);
+            throw new InsufficientTrustException(
+                String.format("Trust level %.2f below required %.2f", currentTrust, requiredTrust)
+            );
+        }
+        
+        return grantAccess(request, context);
+    }
+    
+    private double calculateInitialTrust(PartnerOrg partnerOrg) {
+        // Base trust calculation
+        double baseTrust = 0.5;
+        if (partnerOrg.hasValidCertificate()) baseTrust += 0.2;
+        if (partnerOrg.hasSecurityAudit()) baseTrust += 0.2;
+        if (partnerOrg.hasComplianceCertification()) baseTrust += 0.1;
+        return Math.min(baseTrust, 1.0);
+    }
+    
+    private double evaluateTrust(PartnerContext context) {
+        TrustConfig config = trustStore.get(context.getPartnerId());
+        double currentTrust = config.getTrustScore();
+        
+        // Adjust based on recent behavior
+        if (context.hasRecentFailures()) currentTrust -= 0.1;
+        if (context.hasExcessiveRequests()) currentTrust -= 0.05;
+        
+        return Math.max(currentTrust, 0.0);
+    }
+    
+    private double getRequiredTrustLevel(String uri) {
+        if (uri.contains("/admin/")) return 0.9;
+        if (uri.contains("/sensitive/")) return 0.7;
+        return 0.5;
+    }
+    
+    private AccessDecision grantAccess(HttpServletRequest request, PartnerContext context) {
+        return AccessDecision.builder()
+            .allowed(true)
+            .partnerId(context.getPartnerId())
+            .timestamp(Instant.now())
+            .build();
+    }
+}
+```
+
+### Centralized Gateway Security
+
+**Challenge:** Unified security enforcement across multiple backend services
+
+**Applies to:** Microservices, distributed architectures, hybrid environments
+
+**Risk:** Inconsistent security, policy gaps, single point of failure
+
+Consolidate authentication, authorization, and rate limiting at the gateway layer to ensure consistent security policies across all backend services. Include circuit breaker patterns for resilience.
+
+```javascript
+// API Gateway security middleware
+class APIGatewaySecurity {
+    constructor(authService, rateLimitService, auditLogger) {
+        this.authService = authService;
+        this.rateLimitService = rateLimitService;
+        this.auditLogger = auditLogger;
+        this.circuitBreakers = new Map();
+    }
+    
+    async enforcePolicy(request, serviceConfig) {
+        // Validate service configuration
+        if (!serviceConfig?.name || !Array.isArray(serviceConfig.requiredPermissions)) {
+            throw new InvalidServiceConfigError('Service configuration must have name and permissions');
+        }
+        
+        try {
+            // Authentication
+            const user = await this.authService.authenticateRequest(request);
+            if (!user) {
+                this.auditLogger.logAuthenticationFailure(request.ip, serviceConfig.name);
+                throw new AuthenticationError('Authentication failed');
+            }
+            
+            // Authorization
+            if (!this.isAuthorized(user, serviceConfig.requiredPermissions)) {
+                this.auditLogger.logAuthorizationFailure(user.id, serviceConfig.name);
+                throw new UnauthorizedError('Insufficient permissions');
+            }
+            
+            // Rate limiting
+            const rateLimitKey = `${serviceConfig.name}:${user.id}`;
+            if (!await this.rateLimitService.checkLimit(rateLimitKey, serviceConfig.rateLimit)) {
+                this.auditLogger.logRateLimitExceeded(user.id, serviceConfig.name);
+                throw new RateLimitExceededError('Rate limit exceeded');
+            }
+            
+            // Circuit breaker check
+            const circuitBreaker = this.getCircuitBreaker(serviceConfig.name);
+            if (circuitBreaker.isOpen()) {
+                throw new ServiceUnavailableError('Service temporarily unavailable');
+            }
+            
+            return this.transformRequest(request, serviceConfig.transformRules);
+        } catch (error) {
+            this.auditLogger.logPolicyEnforcementError(serviceConfig.name, error.message);
+            throw error;
+        }
+    }
+    
+    getCircuitBreaker(serviceName) {
+        if (!this.circuitBreakers.has(serviceName)) {
+            this.circuitBreakers.set(serviceName, new CircuitBreaker({
+                failureThreshold: 5,
+                recoveryTimeout: 30000
+            }));
+        }
+        return this.circuitBreakers.get(serviceName);
+    }
+    
+    isAuthorized(user, requiredPermissions) {
+        return requiredPermissions.every(permission => 
+            user.permissions && user.permissions.includes(permission)
+        );
+    }
+    
+    transformRequest(request, transformRules) {
+        if (!transformRules) return request;
+        
+        const transformed = { ...request };
+        transformRules.forEach(rule => {
+            if (rule.type === 'header' && rule.action === 'add') {
+                transformed.headers[rule.key] = rule.value;
+            }
+        });
+        return transformed;
+    }
+}
+
+// Circuit breaker implementation
+class CircuitBreaker {
+    constructor(options) {
+        this.failureThreshold = options.failureThreshold || 5;
+        this.recoveryTimeout = options.recoveryTimeout || 30000;
+        this.failureCount = 0;
+        this.lastFailureTime = null;
+        this.state = 'CLOSED'; // CLOSED, OPEN, HALF_OPEN
+    }
+    
+    isOpen() {
+        if (this.state === 'OPEN') {
+            if (Date.now() - this.lastFailureTime > this.recoveryTimeout) {
+                this.state = 'HALF_OPEN';
+                return false;
+            }
+            return true;
+        }
+        return false;
+    }
+}
+```
+
+### API Versioning Security
+
+**Challenge:** Maintaining security across multiple API versions
+
+**Applies to:** Version migration, backward compatibility, deprecation management
+
+**Risk:** Version confusion attacks, deprecated endpoint exploitation, inconsistent security
+
+Implement version-aware security policies that enforce stricter controls on newer versions while maintaining backward compatibility. Include automatic security upgrades and deprecation warnings.
+
+```java
+// Version-aware security enforcement
+@Component
+public class APIVersionSecurity {
+    
+    private final Map<String, VersionSecurityPolicy> versionPolicies = new HashMap<>();
+    
+    @PostConstruct
+    public void initializePolicies() {
+        // v1.0 - Legacy, minimal security
+        versionPolicies.put("v1.0", VersionSecurityPolicy.builder()
+            .authRequired(false)
+            .rateLimitMultiplier(0.5) // Reduced limits for old versions
+            .deprecationWarning(true)
+            .build());
+            
+        // v2.0 - Enhanced security
+        versionPolicies.put("v2.0", VersionSecurityPolicy.builder()
+            .authRequired(true)
+            .rateLimitMultiplier(1.0)
+            .requireMFA(false)
+            .build());
+            
+        // v3.0 - Maximum security
+        versionPolicies.put("v3.0", VersionSecurityPolicy.builder()
+            .authRequired(true)
+            .rateLimitMultiplier(1.5) // Higher limits for new versions
+            .requireMFA(true)
+            .encryptionRequired(true)
+            .build());
+    }
+    
+    public SecurityContext enforceVersionSecurity(String version, HttpServletRequest request) {
+        VersionSecurityPolicy policy = versionPolicies.get(version);
+        if (policy == null) {
+            throw new UnsupportedVersionException("API version not supported: " + version);
+        }
+        
+        SecurityContext context = new SecurityContext();
+        
+        // Version-specific authentication
+        if (policy.isAuthRequired()) {
+            context.setUser(authenticateRequest(request, policy));
+        }
+        
+        // Deprecation handling
+        if (policy.hasDeprecationWarning()) {
+            context.addWarning("API version " + version + " is deprecated. Migrate to v3.0");
+        }
+        
+        // Rate limit adjustment
+        context.setRateLimitMultiplier(policy.getRateLimitMultiplier());
+        
+        return context;
+    }
+}
+```
+
+## Universal Security Controls
+
+### Cross-Protocol Rate Limiting
+
+**Challenge:** Consistent rate limiting across different API technologies
+
+**Applies to:** Mixed API environments, unified user quotas
+
+**Risk:** API abuse, resource exhaustion, unfair usage
+
+Use distributed rate limiting with Redis to maintain consistent quotas across all API protocols and instances. Implement sliding window algorithms for accurate rate calculations.
+
+```java
+// Universal rate limiting with Redis
+@Service
+public class UniversalRateLimit {
+    
+    @Autowired
+    private RedisTemplate<String, String> redisTemplate;
+    
+    public boolean checkLimit(String identifier, RateLimitConfig config) {
+        String key = "rate_limit:" + identifier;
+        String script = 
+            "local current = redis.call('incr', KEYS[1]) " +
+            "if current == 1 then " +
+            "    redis.call('expire', KEYS[1], ARGV[1]) " +
+            "end " +
+            "return current <= tonumber(ARGV[2])";
+            
+        Boolean allowed = redisTemplate.execute(
+            RedisScript.of(script, Boolean.class),
+            Collections.singletonList(key),
+            String.valueOf(config.getWindow()),
+            String.valueOf(config.getLimit())
+        );
+        
+        if (!allowed) {
+            throw new RateLimitExceededException();
+        }
+        return true;
+    }
+}
+```
+
+### Technology-Agnostic Authentication
+
+**Challenge:** Unified authentication across different API protocols
+
+**Applies to:** Multi-protocol environments, SSO requirements
+
+**Risk:** Authentication bypass, token confusion, protocol-specific vulnerabilities
+
+Create protocol-aware authentication handlers that can process different authentication methods while maintaining consistent JWT validation and claims processing across all API types.
+
+```javascript
+// Multi-protocol authentication handler
+class UniversalAuth {
+    async authenticate(request, protocol) {
+        const handlers = {
+            'http': this.handleHTTPAuth,
+            'websocket': this.handleWebSocketAuth,
+            'webhook': this.handleWebhookAuth,
+            'grpc': this.handleGRPCAuth
+        };
+        
+        const handler = handlers[protocol];
+        if (!handler) {
+            throw new UnsupportedProtocolError(protocol);
+        }
+        
+        return await handler.call(this, request);
+    }
+    
+    // JWT validation for all protocols
+    async validateJWT(token) {
+        try {
+            const decoded = jwt.verify(token, this.getPublicKey());
+            
+            // Universal claims validation
+            this.validateClaims(decoded);
+            
+            return {
+                userId: decoded.sub,
+                permissions: decoded.permissions || [],
+                tenantId: decoded.tenant,
+                expiresAt: decoded.exp
+            };
+        } catch (error) {
+            throw new InvalidTokenError(error.message);
+        }
+    }
+}
+```
+
+## Security Operations
+
+### Cross-Protocol Security Testing
+
+**Challenge:** Consistent security validation across different API types
+
+**Applies to:** CI/CD pipelines, security regression testing
+
+**Risk:** Protocol-specific vulnerabilities, inconsistent security posture
+
+Create unified test suites that validate security controls across all API protocols using protocol-specific adapters. This ensures consistent security validation regardless of the underlying API technology.
+
+```javascript
+// Multi-protocol security testing
+class UniversalAPITester {
+    async testAPI(endpoint, protocol, config) {
+        const tests = {
+            authentication: () => this.testAuth(endpoint, protocol),
+            authorization: () => this.testAuthz(endpoint, protocol),
+            injection: () => this.testInjection(endpoint, protocol),
+            rateLimiting: () => this.testRateLimit(endpoint, protocol),
+            dataExposure: () => this.testDataLeakage(endpoint, protocol)
+        };
+        
+        const results = {};
+        for (const [testName, testFunc] of Object.entries(tests)) {
+            try {
+                results[testName] = await testFunc();
+            } catch (error) {
+                results[testName] = { status: 'failed', error: error.message };
+            }
+        }
+        
+        return this.generateReport(results);
+    }
+    
+    // Protocol-specific test adapters
+    async testAuth(endpoint, protocol) {
+        const adapters = {
+            'rest': this.testRESTAuth,
+            'graphql': this.testGraphQLAuth,
+            'websocket': this.testWebSocketAuth,
+            'webhook': this.testWebhookAuth
+        };
+        
+        return await adapters[protocol](endpoint);
+    }
+    
+    async testRESTAuth(endpoint) {
+        const tests = [
+            { name: 'no_token', headers: {}, expectedStatus: 401 },
+            { name: 'invalid_token', headers: { 'Authorization': 'Bearer invalid' }, expectedStatus: 401 },
+            { name: 'expired_token', headers: { 'Authorization': 'Bearer ' + this.getExpiredToken() }, expectedStatus: 401 }
+        ];
+        
+        const results = [];
+        for (const test of tests) {
+            const response = await fetch(endpoint, { headers: test.headers });
+            results.push({
+                test: test.name,
+                passed: response.status === test.expectedStatus
+            });
+        }
+        return results;
+    }
+    
+    generateReport(results) {
+        const totalTests = Object.keys(results).length;
+        const passedTests = Object.values(results).filter(r => r.status !== 'failed').length;
+        
+        return {
+            summary: `${passedTests}/${totalTests} tests passed`,
+            details: results,
+            securityScore: (passedTests / totalTests) * 100
+        };
+    }
+}
+```
+
+### Automated Threat Orchestration
+
+**Challenge:** Coordinated threat response across multiple API technologies
+
+**Applies to:** Enterprise environments, real-time threat response
+
+**Risk:** Slow manual response, inconsistent threat handling, attack propagation
+
+Implement intelligent threat analysis and automated response coordination across all API types. The system adapts security posture based on threat intelligence and coordinates responses to prevent attack propagation.
+
+```javascript
+// Cross-API threat response orchestrator
+class APIThreatOrchestrator {
+    constructor() {
+        this.responseStrategies = new Map();
+        this.threatIntelligence = new ThreatIntelligenceEngine();
+    }
+
+    async orchestrateResponse(threatEvent) {
+        const threatContext = await this.analyzeThreat(threatEvent);
+        const affectedAPIs = this.identifyAffectedAPIs(threatContext);
+
+        // Coordinate response across multiple API types
+        const responses = await Promise.all(
+            affectedAPIs.map(api => this.executeResponse(api, threatContext))
+        );
+
+        return this.consolidateResponses(responses);
+    }
+
+    async executeResponse(api, threatContext) {
+        const strategy = this.getResponseStrategy(api.type, threatContext.severity);
+
+        return {
+            apiId: api.id,
+            actions: await strategy.execute(api, threatContext),
+            timestamp: Date.now()
+        };
+    }
+
+    // Adaptive security posture adjustment
+    async adaptSecurityPosture(threatLandscape) {
+        const adjustments = {
+            rateLimits: this.calculateRateLimitAdjustments(threatLandscape),
+            authStrength: this.adjustAuthRequirements(threatLandscape),
+            monitoring: this.enhanceMonitoring(threatLandscape)
+        };
+
+        return this.applyGlobalAdjustments(adjustments);
+    }
+    
+    async analyzeThreat(threatEvent) {
+        return {
+            severity: this.calculateSeverity(threatEvent),
+            type: threatEvent.type,
+            source: threatEvent.source,
+            affectedProtocols: this.identifyAffectedProtocols(threatEvent)
+        };
+    }
+    
+    identifyAffectedAPIs(threatContext) {
+        // Return APIs that match threat characteristics
+        return this.apiRegistry.filter(api => 
+            threatContext.affectedProtocols.includes(api.protocol)
+        );
+    }
+    
+    getResponseStrategy(apiType, severity) {
+        const strategies = {
+            'high': new ImmediateBlockStrategy(),
+            'medium': new ThrottleStrategy(),
+            'low': new MonitorStrategy()
+        };
+        return strategies[severity] || strategies['low'];
+    }
+    
+    consolidateResponses(responses) {
+        return {
+            totalAPIs: responses.length,
+            actionsExecuted: responses.reduce((sum, r) => sum + r.actions.length, 0),
+            timestamp: Date.now()
+        };
+    }
+}
+```
+
+## Performance Considerations
+
+### Security Control Performance Impact
+
+**Authentication Overhead:**
+
+- JWT validation: ~1-2ms per request
+- Database user lookup: ~5-10ms per request
+- **Optimization:** Use Redis caching for user data (reduces to ~0.5ms)
+
+**Rate Limiting Performance:**
+
+- In-memory rate limiting: ~0.1ms per request
+- Redis-based rate limiting: ~1-3ms per request
+- **Optimization:** Use local caching with Redis sync for high-traffic APIs
+
+**Encryption Impact:**
+
+- TLS handshake: ~50-100ms (one-time per connection)
+- Request/response encryption: ~1-5ms per request
+- **Optimization:** Use connection pooling and HTTP/2 multiplexing
+
+```javascript
+// Performance-optimized security middleware
+class OptimizedSecurityMiddleware {
+    constructor() {
+        this.userCache = new LRUCache({ max: 10000, ttl: 300000 }); // 5min TTL
+        this.rateLimitCache = new Map();
+    }
+    
+    async authenticate(token) {
+        // Check cache first (0.1ms vs 10ms DB lookup)
+        const cached = this.userCache.get(token);
+        if (cached && cached.expiresAt > Date.now()) {
+            return cached.user;
+        }
+        
+        // Fallback to database
+        const user = await this.userService.validateToken(token);
+        this.userCache.set(token, { user, expiresAt: Date.now() + 300000 });
+        return user;
+    }
+    
+    // Batch rate limit checks for better performance
+    async checkRateLimits(requests) {
+        const pipeline = this.redis.pipeline();
+        requests.forEach(req => {
+            pipeline.incr(`rate:${req.userId}:${req.endpoint}`);
+        });
+        
+        const results = await pipeline.exec();
+        return results.map((result, index) => ({
+            allowed: result[1] <= requests[index].limit,
+            current: result[1]
+        }));
+    }
+}
+```
+
+**Performance Monitoring:**
+
+- Monitor security middleware latency
+- Set SLA targets: <5ms for authentication, <2ms for authorization
+- Use circuit breakers for external security services
+- Implement graceful degradation for non-critical security checks
+
+## References
+
+### OWASP Resources
+
+- [OWASP API Security Top 10](https://owasp.org/www-project-api-security/) - Core API vulnerabilities
+- [REST Security Cheat Sheet](REST_Security_Cheat_Sheet.md) - REST-specific security patterns
+- [GraphQL Cheat Sheet](GraphQL_Cheat_Sheet.md) - GraphQL security guidance
+- [WebSocket Security Cheat Sheet](WebSocket_Security_Cheat_Sheet.md) - WebSocket security patterns
+- [Authentication Cheat Sheet](Authentication_Cheat_Sheet.md) - Authentication best practices
+- [Authorization Cheat Sheet](Authorization_Cheat_Sheet.md) - Authorization patterns
+
+### Standards and Specifications
+
+- [NIST SP 800-204 - Security Strategies for Microservices](https://csrc.nist.gov/pubs/sp/800/204/final)
+- [NIST SP 800-207 - Zero Trust Architecture](https://csrc.nist.gov/pubs/sp/800/207/final)
+- [ISO/IEC 27001:2022 - Information Security Management](https://www.iso.org/standard/27001)
+- [RFC 6749 - OAuth 2.0 Authorization Framework](https://datatracker.ietf.org/doc/html/rfc6749)
+- [RFC 8725 - JSON Web Token Best Current Practices](https://datatracker.ietf.org/doc/html/rfc8725)
+- [RFC 7519 - JSON Web Token (JWT)](https://datatracker.ietf.org/doc/html/rfc7519)
+- [OpenAPI Security Specification v3.1.0](https://spec.openapis.org/oas/v3.1.0#security-scheme-object)
+- [NIST Cybersecurity Framework v1.1](https://www.nist.gov/cyberframework)
+- [ISO/IEC 27034 - Application Security](https://www.iso.org/standard/44378.html)