Architecture Patterns

Overview: Secure architectural design patterns for MCP implementations.

This guide presents proven architectural patterns that enhance security in MCP deployments. These patterns address common security challenges and provide blueprints for building secure, scalable MCP systems.

Zero Trust Architecture

Zero Trust MCP Implementation

# Zero Trust Architecture for MCP
import jwt
import time
from typing import Dict, List, Optional
from dataclasses import dataclass

@dataclass
class SecurityContext:
    user_id: str
    device_id: str
    ip_address: str
    trust_score: float
    permissions: List[str]
    session_id: str

class ZeroTrustMCPGateway:
    def __init__(self):
        self.trust_evaluator = TrustEvaluator()
        self.policy_engine = PolicyEngine()
        self.audit_logger = AuditLogger()
        
    def authenticate_request(self, request: Dict) -> Optional[SecurityContext]:
        """Authenticate and evaluate trust for every request"""
        
        # Extract credentials
        token = request.get('authorization')
        if not token:
            return None
            
        # Validate token
        user_claims = self.validate_token(token)
        if not user_claims:
            return None
            
        # Evaluate trust score
        trust_score = self.trust_evaluator.evaluate_trust(
            user_id=user_claims['user_id'],
            device_id=request.get('device_id'),
            ip_address=request.get('ip_address'),
            behavioral_data=request.get('behavioral_data', {})
        )
        
        # Create security context
        context = SecurityContext(
            user_id=user_claims['user_id'],
            device_id=request.get('device_id'),
            ip_address=request.get('ip_address'),
            trust_score=trust_score,
            permissions=user_claims.get('permissions', []),
            session_id=request.get('session_id')
        )
        
        return context
    
    def authorize_tool_access(self, context: SecurityContext, tool_name: str, action: str) -> bool:
        """Authorize tool access based on zero trust principles"""
        
        # Check minimum trust score
        if context.trust_score < 0.7:
            self.audit_logger.log_access_denied(context, tool_name, "Low trust score")
            return False
            
        # Evaluate policy
        policy_result = self.policy_engine.evaluate_policy(
            user_id=context.user_id,
            tool_name=tool_name,
            action=action,
            context=context
        )
        
        if not policy_result.allowed:
            self.audit_logger.log_access_denied(context, tool_name, policy_result.reason)
            return False
            
        # Additional risk assessment
        if self.requires_additional_verification(context, tool_name, action):
            return self.perform_additional_verification(context, tool_name, action)
            
        self.audit_logger.log_access_granted(context, tool_name, action)
        return True
    
    def requires_additional_verification(self, context: SecurityContext, tool_name: str, action: str) -> bool:
        """Determine if additional verification is required"""
        
        # High-risk operations
        high_risk_tools = ['system_admin', 'database_admin', 'file_manager']
        if tool_name in high_risk_tools:
            return True
            
        # Low trust score
        if context.trust_score < 0.8:
            return True
            
        # Unusual access patterns
        if self.is_unusual_access(context, tool_name, action):
            return True
            
        return False

class TrustEvaluator:
    def __init__(self):
        self.user_profiles = {}
        self.device_profiles = {}
        self.behavioral_analyzer = BehavioralAnalyzer()
        
    def evaluate_trust(self, user_id: str, device_id: str, ip_address: str, behavioral_data: Dict) -> float:
        """Evaluate trust score based on multiple factors"""
        
        trust_factors = []
        
        # User reputation
        user_trust = self.get_user_trust(user_id)
        trust_factors.append(('user_reputation', user_trust, 0.3))
        
        # Device trust
        device_trust = self.get_device_trust(device_id)
        trust_factors.append(('device_trust', device_trust, 0.2))
        
        # Location trust
        location_trust = self.get_location_trust(ip_address, user_id)
        trust_factors.append(('location_trust', location_trust, 0.2))
        
        # Behavioral analysis
        behavioral_trust = self.behavioral_analyzer.analyze_behavior(behavioral_data, user_id)
        trust_factors.append(('behavioral_trust', behavioral_trust, 0.3))
        
        # Calculate weighted trust score
        total_score = sum(score * weight for _, score, weight in trust_factors)
        
        return min(max(total_score, 0.0), 1.0)
    
    def get_user_trust(self, user_id: str) -> float:
        """Get user trust score based on history"""
        
        profile = self.user_profiles.get(user_id, {})
        
        # Base trust score
        base_trust = profile.get('base_trust', 0.5)
        
        # Recent activity
        recent_violations = profile.get('recent_violations', 0)
        violation_penalty = min(recent_violations * 0.1, 0.3)
        
        # Account age and activity
        account_age_bonus = min(profile.get('account_age_days', 0) / 365 * 0.1, 0.2)
        
        return max(base_trust - violation_penalty + account_age_bonus, 0.0)

Policy Engine Implementation

# Policy Engine for Zero Trust
class PolicyEngine:
    def __init__(self):
        self.policies = {}
        self.load_policies()
        
    def evaluate_policy(self, user_id: str, tool_name: str, action: str, context: SecurityContext) -> PolicyResult:
        """Evaluate access policy"""
        
        # Get applicable policies
        policies = self.get_applicable_policies(user_id, tool_name, action)
        
        for policy in policies:
            result = self.evaluate_single_policy(policy, context)
            if not result.allowed:
                return result
                
        return PolicyResult(allowed=True, reason="Policy evaluation passed")
    
    def get_applicable_policies(self, user_id: str, tool_name: str, action: str) -> List[Dict]:
        """Get policies applicable to the request"""
        
        applicable = []
        
        # User-specific policies
        user_policies = self.policies.get('users', {}).get(user_id, [])
        applicable.extend(user_policies)
        
        # Tool-specific policies
        tool_policies = self.policies.get('tools', {}).get(tool_name, [])
        applicable.extend(tool_policies)
        
        # Action-specific policies
        action_policies = self.policies.get('actions', {}).get(action, [])
        applicable.extend(action_policies)
        
        # Global policies
        global_policies = self.policies.get('global', [])
        applicable.extend(global_policies)
        
        return applicable
    
    def evaluate_single_policy(self, policy: Dict, context: SecurityContext) -> PolicyResult:
        """Evaluate a single policy"""
        
        # Time-based restrictions
        if not self.check_time_restrictions(policy, context):
            return PolicyResult(allowed=False, reason="Time restriction violation")
            
        # Location-based restrictions
        if not self.check_location_restrictions(policy, context):
            return PolicyResult(allowed=False, reason="Location restriction violation")
            
        # Trust score requirements
        if not self.check_trust_requirements(policy, context):
            return PolicyResult(allowed=False, reason="Trust score requirement not met")
            
        # Resource limits
        if not self.check_resource_limits(policy, context):
            return PolicyResult(allowed=False, reason="Resource limit exceeded")
            
        return PolicyResult(allowed=True, reason="Policy satisfied")
    
    def check_time_restrictions(self, policy: Dict, context: SecurityContext) -> bool:
        """Check time-based access restrictions"""
        
        time_restrictions = policy.get('time_restrictions')
        if not time_restrictions:
            return True
            
        current_time = time.time()
        current_hour = time.localtime(current_time).tm_hour
        
        allowed_hours = time_restrictions.get('allowed_hours', list(range(24)))
        if current_hour not in allowed_hours:
            return False
            
        # Check specific time windows
        time_windows = time_restrictions.get('time_windows', [])
        if time_windows:
            for window in time_windows:
                if self.is_time_in_window(current_time, window):
                    return True
            return False
            
        return True
    
    def check_location_restrictions(self, policy: Dict, context: SecurityContext) -> bool:
        """Check location-based access restrictions"""
        
        location_restrictions = policy.get('location_restrictions')
        if not location_restrictions:
            return True
            
        # IP whitelist
        ip_whitelist = location_restrictions.get('ip_whitelist', [])
        if ip_whitelist and context.ip_address not in ip_whitelist:
            return False
            
        # IP blacklist
        ip_blacklist = location_restrictions.get('ip_blacklist', [])
        if context.ip_address in ip_blacklist:
            return False
            
        # Geographic restrictions
        geo_restrictions = location_restrictions.get('countries')
        if geo_restrictions:
            user_country = self.get_country_from_ip(context.ip_address)
            if user_country not in geo_restrictions:
                return False
                
        return True

Microservices Security Pattern

Secure Service Mesh Architecture

# Secure Microservices Architecture for MCP
class SecureMCPServiceMesh:
    def __init__(self):
        self.service_registry = ServiceRegistry()
        self.tls_manager = TLSManager()
        self.circuit_breaker = CircuitBreaker()
        self.rate_limiter = RateLimiter()
        
    def setup_service_mesh(self, services: List[Dict]):
        """Setup secure service mesh for MCP services"""
        
        for service in services:
            # Register service
            self.service_registry.register_service(service)
            
            # Setup mTLS
            self.setup_mtls_for_service(service)
            
            # Configure security policies
            self.configure_service_policies(service)
            
            # Setup monitoring
            self.setup_service_monitoring(service)
    
    def setup_mtls_for_service(self, service: Dict):
        """Setup mutual TLS for service communication"""
        
        service_name = service['name']
        
        # Generate service certificate
        cert, key = self.tls_manager.generate_service_certificate(service_name)
        
        # Configure TLS context
        tls_config = {
            'cert': cert,
            'key': key,
            'ca_cert': self.tls_manager.get_ca_cert(),
            'verify_mode': 'REQUIRED',
            'ciphers': 'ECDHE+AESGCM:ECDHE+CHACHA20:DHE+AESGCM:DHE+CHACHA20:!aNULL:!MD5:!DSS'
        }
        
        service['tls_config'] = tls_config
    
    def configure_service_policies(self, service: Dict):
        """Configure security policies for service"""
        
        service_name = service['name']
        
        # Network policies
        network_policy = {
            'ingress': self.get_ingress_rules(service),
            'egress': self.get_egress_rules(service)
        }
        
        # Rate limiting
        rate_limit_policy = {
            'requests_per_second': service.get('rate_limit', 100),
            'burst_size': service.get('burst_size', 200)
        }
        
        # Circuit breaker
        circuit_breaker_policy = {
            'failure_threshold': 5,
            'recovery_timeout': 60,
            'timeout': 30
        }
        
        service['security_policies'] = {
            'network': network_policy,
            'rate_limit': rate_limit_policy,
            'circuit_breaker': circuit_breaker_policy
        }
    
    def handle_service_request(self, source_service: str, target_service: str, request: Dict) -> Dict:
        """Handle inter-service request with security controls"""
        
        # Validate service identity
        if not self.validate_service_identity(source_service):
            return {'error': 'Invalid service identity'}
        
        # Check service policies
        if not self.check_service_policies(source_service, target_service, request):
            return {'error': 'Policy violation'}
        
        # Apply rate limiting
        if not self.rate_limiter.allow_request(source_service, target_service):
            return {'error': 'Rate limit exceeded'}
        
        # Check circuit breaker
        if not self.circuit_breaker.is_closed(target_service):
            return {'error': 'Service unavailable'}
        
        try:
            # Forward request
            response = self.forward_request(target_service, request)
            
            # Record success
            self.circuit_breaker.record_success(target_service)
            
            return response
            
        except Exception as e:
            # Record failure
            self.circuit_breaker.record_failure(target_service)
            
            return {'error': f'Service error: {str(e)}'}

API Gateway Pattern

# API Gateway Pattern for MCP
class MCPAPIGateway:
    def __init__(self):
        self.auth_service = AuthenticationService()
        self.authorization_service = AuthorizationService()
        self.rate_limiter = RateLimiter()
        self.request_validator = RequestValidator()
        self.response_filter = ResponseFilter()
        
    def handle_request(self, request: Dict) -> Dict:
        """Handle API request through gateway"""
        
        # Request validation
        validation_result = self.request_validator.validate(request)
        if not validation_result.valid:
            return {'error': validation_result.error, 'status': 400}
        
        # Authentication
        auth_result = self.auth_service.authenticate(request)
        if not auth_result.authenticated:
            return {'error': 'Authentication failed', 'status': 401}
        
        # Authorization
        authz_result = self.authorization_service.authorize(
            auth_result.user,
            request.get('endpoint'),
            request.get('method')
        )
        if not authz_result.authorized:
            return {'error': 'Authorization failed', 'status': 403}
        
        # Rate limiting
        if not self.rate_limiter.allow_request(auth_result.user.id, request.get('endpoint')):
            return {'error': 'Rate limit exceeded', 'status': 429}
        
        # Route to backend service
        backend_response = self.route_to_backend(request, auth_result.user)
        
        # Filter response
        filtered_response = self.response_filter.filter_response(
            backend_response,
            auth_result.user
        )
        
        return filtered_response
    
    def route_to_backend(self, request: Dict, user: User) -> Dict:
        """Route request to appropriate backend service"""
        
        endpoint = request.get('endpoint')
        
        # Determine target service
        target_service = self.get_target_service(endpoint)
        
        # Add security headers
        request['headers'] = request.get('headers', {})
        request['headers']['X-User-ID'] = user.id
        request['headers']['X-User-Roles'] = ','.join(user.roles)
        request['headers']['X-Request-ID'] = self.generate_request_id()
        
        # Forward to backend
        return self.forward_to_service(target_service, request)
    
    def get_target_service(self, endpoint: str) -> str:
        """Determine target service based on endpoint"""
        
        service_mapping = {
            '/api/tools': 'tool-service',
            '/api/auth': 'auth-service',
            '/api/users': 'user-service',
            '/api/admin': 'admin-service'
        }
        
        for pattern, service in service_mapping.items():
            if endpoint.startswith(pattern):
                return service
        
        return 'default-service'

Defense in Depth Pattern

Layered Security Architecture

# Defense in Depth Architecture
class DefenseInDepthMCP:
    def __init__(self):
        self.layers = [
            NetworkSecurityLayer(),
            APIGatewayLayer(),
            AuthenticationLayer(),
            AuthorizationLayer(),
            ApplicationSecurityLayer(),
            DataSecurityLayer(),
            AuditLayer()
        ]
        
    def process_request(self, request: Dict) -> Dict:
        """Process request through all security layers"""
        
        context = SecurityContext()
        
        for layer in self.layers:
            # Process request through layer
            result = layer.process(request, context)
            
            if not result.allowed:
                # Log security violation
                self.log_security_violation(layer, request, result.reason)
                
                # Return appropriate error
                return {
                    'error': 'Security violation',
                    'layer': layer.name,
                    'reason': result.reason,
                    'status': result.status_code
                }
            
            # Update security context
            context.update(result.context_updates)
        
        # All layers passed, process request
        return self.process_authorized_request(request, context)
    
    def log_security_violation(self, layer: SecurityLayer, request: Dict, reason: str):
        """Log security violation for analysis"""
        
        log_entry = {
            'timestamp': time.time(),
            'layer': layer.name,
            'request': self.sanitize_request_for_logging(request),
            'reason': reason,
            'severity': layer.violation_severity
        }
        
        self.security_logger.log_violation(log_entry)
        
        # Trigger alerts for high-severity violations
        if layer.violation_severity == 'HIGH':
            self.alert_system.send_alert(log_entry)

class NetworkSecurityLayer(SecurityLayer):
    def __init__(self):
        self.name = "Network Security"
        self.violation_severity = "MEDIUM"
        self.firewall = NetworkFirewall()
        self.ddos_protection = DDoSProtection()
        
    def process(self, request: Dict, context: SecurityContext) -> LayerResult:
        """Process request through network security layer"""
        
        source_ip = request.get('source_ip')
        
        # Check IP reputation
        if not self.check_ip_reputation(source_ip):
            return LayerResult(
                allowed=False,
                reason=f"Source IP {source_ip} has bad reputation",
                status_code=403
            )
        
        # Check firewall rules
        if not self.firewall.allow_connection(source_ip, request.get('destination_port')):
            return LayerResult(
                allowed=False,
                reason="Firewall rule violation",
                status_code=403
            )
        
        # Check DDoS protection
        if not self.ddos_protection.allow_request(source_ip):
            return LayerResult(
                allowed=False,
                reason="DDoS protection triggered",
                status_code=429
            )
        
        return LayerResult(
            allowed=True,
            context_updates={'source_ip_validated': True}
        )

class ApplicationSecurityLayer(SecurityLayer):
    def __init__(self):
        self.name = "Application Security"
        self.violation_severity = "HIGH"
        self.waf = WebApplicationFirewall()
        self.input_validator = InputValidator()
        
    def process(self, request: Dict, context: SecurityContext) -> LayerResult:
        """Process request through application security layer"""
        
        # Web Application Firewall
        waf_result = self.waf.analyze_request(request)
        if not waf_result.allowed:
            return LayerResult(
                allowed=False,
                reason=f"WAF violation: {waf_result.rule_triggered}",
                status_code=403
            )
        
        # Input validation
        validation_result = self.input_validator.validate_all_inputs(request)
        if not validation_result.valid:
            return LayerResult(
                allowed=False,
                reason=f"Input validation failed: {validation_result.error}",
                status_code=400
            )
        
        # Check for common attack patterns
        if self.detect_attack_patterns(request):
            return LayerResult(
                allowed=False,
                reason="Attack pattern detected",
                status_code=403
            )
        
        return LayerResult(
            allowed=True,
            context_updates={'application_security_passed': True}
        )

Event-Driven Security Pattern

Security Event Processing

# Event-Driven Security Architecture
class SecurityEventProcessor:
    def __init__(self):
        self.event_queue = EventQueue()
        self.event_handlers = {}
        self.threat_detector = ThreatDetector()
        self.response_orchestrator = ResponseOrchestrator()
        
    def register_event_handler(self, event_type: str, handler: callable):
        """Register handler for specific event type"""
        
        if event_type not in self.event_handlers:
            self.event_handlers[event_type] = []
        
        self.event_handlers[event_type].append(handler)
    
    def process_security_event(self, event: SecurityEvent):
        """Process security event through registered handlers"""
        
        # Enrich event with context
        enriched_event = self.enrich_event(event)
        
        # Detect threats
        threat_analysis = self.threat_detector.analyze_event(enriched_event)
        
        # Execute handlers
        for handler in self.event_handlers.get(event.type, []):
            try:
                handler(enriched_event, threat_analysis)
            except Exception as e:
                self.log_handler_error(handler, event, e)
        
        # Orchestrate response if threat detected
        if threat_analysis.threat_detected:
            self.response_orchestrator.orchestrate_response(
                enriched_event,
                threat_analysis
            )
    
    def enrich_event(self, event: SecurityEvent) -> SecurityEvent:
        """Enrich event with additional context"""
        
        # Add user context
        if event.user_id:
            event.user_context = self.get_user_context(event.user_id)
        
        # Add device context
        if event.device_id:
            event.device_context = self.get_device_context(event.device_id)
        
        # Add network context
        if event.source_ip:
            event.network_context = self.get_network_context(event.source_ip)
        
        # Add temporal context
        event.temporal_context = self.get_temporal_context(event.timestamp)
        
        return event
    
    def setup_default_handlers(self):
        """Setup default security event handlers"""
        
        # Authentication events
        self.register_event_handler('authentication_failure', self.handle_auth_failure)
        self.register_event_handler('authentication_success', self.handle_auth_success)
        
        # Authorization events
        self.register_event_handler('authorization_failure', self.handle_authz_failure)
        
        # Tool access events
        self.register_event_handler('tool_access', self.handle_tool_access)
        self.register_event_handler('suspicious_tool_usage', self.handle_suspicious_tool_usage)
        
        # System events
        self.register_event_handler('system_compromise', self.handle_system_compromise)
        self.register_event_handler('data_exfiltration', self.handle_data_exfiltration)
    
    def handle_auth_failure(self, event: SecurityEvent, threat_analysis: ThreatAnalysis):
        """Handle authentication failure events"""
        
        # Track failed attempts
        self.track_failed_attempts(event.user_id, event.source_ip)
        
        # Check for brute force
        if self.is_brute_force_attack(event.user_id, event.source_ip):
            self.trigger_brute_force_protection(event.user_id, event.source_ip)
        
        # Update threat intelligence
        self.update_threat_intelligence(event.source_ip, 'auth_failure')
    
    def handle_suspicious_tool_usage(self, event: SecurityEvent, threat_analysis: ThreatAnalysis):
        """Handle suspicious tool usage events"""
        
        # Analyze usage patterns
        usage_analysis = self.analyze_tool_usage_patterns(event.user_id, event.tool_name)
        
        # Check for anomalies
        if usage_analysis.anomaly_detected:
            # Increase monitoring
            self.increase_user_monitoring(event.user_id)
            
            # Require additional authentication
            self.require_additional_auth(event.user_id, event.session_id)
            
            # Alert security team
            self.alert_security_team(event, usage_analysis)

Secure Communication Pattern

End-to-End Encryption Architecture

# End-to-End Encryption Pattern
class E2EEncryptionManager:
    def __init__(self):
        self.key_manager = KeyManager()
        self.crypto_provider = CryptoProvider()
        self.session_manager = SessionManager()
        
    def establish_secure_channel(self, client_id: str, server_id: str) -> SecureChannel:
        """Establish end-to-end encrypted channel"""
        
        # Generate ephemeral key pair
        client_keypair = self.key_manager.generate_keypair()
        
        # Perform key exchange
        shared_secret = self.perform_key_exchange(
            client_id,
            server_id,
            client_keypair
        )
        
        # Derive session keys
        session_keys = self.derive_session_keys(shared_secret)
        
        # Create secure channel
        channel = SecureChannel(
            client_id=client_id,
            server_id=server_id,
            encryption_key=session_keys.encryption_key,
            mac_key=session_keys.mac_key,
            sequence_number=0
        )
        
        return channel
    
    def encrypt_message(self, channel: SecureChannel, message: bytes) -> bytes:
        """Encrypt message for secure transmission"""
        
        # Generate initialization vector
        iv = self.crypto_provider.generate_iv()
        
        # Encrypt message
        ciphertext = self.crypto_provider.encrypt(
            message,
            channel.encryption_key,
            iv
        )
        
        # Create message structure
        encrypted_message = {
            'iv': iv,
            'ciphertext': ciphertext,
            'sequence': channel.sequence_number
        }
        
        # Generate MAC
        mac = self.crypto_provider.generate_mac(
            encrypted_message,
            channel.mac_key
        )
        
        encrypted_message['mac'] = mac
        
        # Increment sequence number
        channel.sequence_number += 1
        
        return self.serialize_message(encrypted_message)
    
    def decrypt_message(self, channel: SecureChannel, encrypted_data: bytes) -> bytes:
        """Decrypt received message"""
        
        # Deserialize message
        encrypted_message = self.deserialize_message(encrypted_data)
        
        # Verify MAC
        if not self.crypto_provider.verify_mac(
            encrypted_message,
            channel.mac_key
        ):
            raise SecurityException("MAC verification failed")
        
        # Check sequence number
        if encrypted_message['sequence'] != channel.expected_sequence:
            raise SecurityException("Invalid sequence number")
        
        # Decrypt message
        plaintext = self.crypto_provider.decrypt(
            encrypted_message['ciphertext'],
            channel.encryption_key,
            encrypted_message['iv']
        )
        
        # Update expected sequence
        channel.expected_sequence += 1
        
        return plaintext

Security Monitoring Pattern

Comprehensive Security Monitoring

# Security Monitoring Architecture
class SecurityMonitoringSystem:
    def __init__(self):
        self.metrics_collector = MetricsCollector()
        self.log_analyzer = LogAnalyzer()
        self.anomaly_detector = AnomalyDetector()
        self.alert_manager = AlertManager()
        
    def setup_monitoring(self):
        """Setup comprehensive security monitoring"""
        
        # Setup metrics collection
        self.setup_metrics_collection()
        
        # Setup log analysis
        self.setup_log_analysis()
        
        # Setup anomaly detection
        self.setup_anomaly_detection()
        
        # Setup alerting
        self.setup_alerting()
    
    def setup_metrics_collection(self):
        """Setup security metrics collection"""
        
        metrics = [
            'authentication_failures',
            'authorization_failures',
            'tool_access_denials',
            'suspicious_activities',
            'system_resource_usage',
            'network_anomalies'
        ]
        
        for metric in metrics:
            self.metrics_collector.register_metric(metric)
    
    def setup_log_analysis(self):
        """Setup security log analysis"""
        
        # Configure log sources
        log_sources = [
            'application_logs',
            'system_logs',
            'network_logs',
            'audit_logs'
        ]
        
        for source in log_sources:
            self.log_analyzer.add_log_source(source)
        
        # Configure analysis rules
        self.log_analyzer.add_analysis_rule(
            'brute_force_detection',
            self.detect_brute_force_patterns
        )
        
        self.log_analyzer.add_analysis_rule(
            'privilege_escalation',
            self.detect_privilege_escalation
        )
    
    def setup_anomaly_detection(self):
        """Setup anomaly detection"""
        
        # User behavior anomalies
        self.anomaly_detector.add_detector(
            'user_behavior',
            UserBehaviorAnomalyDetector()
        )
        
        # System behavior anomalies
        self.anomaly_detector.add_detector(
            'system_behavior',
            SystemBehaviorAnomalyDetector()
        )
        
        # Network anomalies
        self.anomaly_detector.add_detector(
            'network_behavior',
            NetworkAnomalyDetector()
        )
    
    def process_security_data(self, data: SecurityData):
        """Process security data through monitoring pipeline"""
        
        # Collect metrics
        metrics = self.metrics_collector.collect_metrics(data)
        
        # Analyze logs
        log_analysis = self.log_analyzer.analyze_logs(data.logs)
        
        # Detect anomalies
        anomalies = self.anomaly_detector.detect_anomalies(data)
        
        # Generate alerts
        alerts = self.generate_alerts(metrics, log_analysis, anomalies)
        
        # Process alerts
        for alert in alerts:
            self.alert_manager.process_alert(alert)
    
    def generate_alerts(self, metrics: Dict, log_analysis: Dict, anomalies: List) -> List[Alert]:
        """Generate security alerts based on analysis"""
        
        alerts = []
        
        # Metric-based alerts
        for metric_name, metric_value in metrics.items():
            if self.is_metric_threshold_exceeded(metric_name, metric_value):
                alerts.append(Alert(
                    type='metric_threshold',
                    severity='HIGH',
                    message=f"Metric {metric_name} exceeded threshold: {metric_value}",
                    source='metrics'
                ))
        
        # Log analysis alerts
        for analysis_result in log_analysis.get('alerts', []):
            alerts.append(Alert(
                type='log_analysis',
                severity=analysis_result.severity,
                message=analysis_result.message,
                source='logs'
            ))
        
        # Anomaly alerts
        for anomaly in anomalies:
            alerts.append(Alert(
                type='anomaly',
                severity=anomaly.severity,
                message=f"Anomaly detected: {anomaly.description}",
                source='anomaly_detection'
            ))
        
        return alerts

Integration Guidelines

Pattern Selection Matrix

Use Case	Recommended Pattern	Security Level	Complexity
High-security environments	Zero Trust + Defense in Depth	Very High	High
Microservices deployment	Service Mesh + API Gateway	High	Medium
Event-driven systems	Event-driven Security	High	Medium
Communication security	E2E Encryption	High	Medium
Monitoring requirements	Security Monitoring	Medium	Low

Implementation Roadmap

1. Phase 1: Implement basic security patterns (API Gateway, Authentication)
2. Phase 2: Add advanced patterns (Zero Trust, Service Mesh)
3. Phase 3: Implement monitoring and event-driven security
4. Phase 4: Add end-to-end encryption and defense in depth

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Architecture Patterns provide proven blueprints for building secure, scalable MCP systems that can adapt to various security requirements and deployment scenarios.