mcp-infinite-loop-server/src/securityMonitor.js

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/**
 * Advanced Security Monitoring System
 * Revolutionary ML-powered security threat detection for ZAI MCP Server
 */

import { EventEmitter } from 'events';

export class SecurityMonitor extends EventEmitter {
  constructor(mlIntegration) {
    super();
    this.mlIntegration = mlIntegration;
    
    // BREAKTHROUGH FEATURE: Multi-layered Security Analysis
    this.securityLayers = {
      networkSecurity: new NetworkSecurityAnalyzer(),
      accessControl: new AccessControlMonitor(),
      dataIntegrity: new DataIntegrityChecker(),
      threatDetection: new ThreatDetectionEngine(),
      anomalyDetection: new SecurityAnomalyDetector()
    };
    
    // BREAKTHROUGH FEATURE: Real-time Threat Intelligence
    this.threatIntelligence = {
      knownThreats: new Map(),
      emergingPatterns: new Set(),
      riskScores: new Map(),
      mitigationStrategies: new Map()
    };
    
    // BREAKTHROUGH FEATURE: Adaptive Security Policies
    this.adaptivePolicies = {
      accessRules: new Map(),
      rateLimits: new Map(),
      securityLevels: new Map(),
      autoResponses: new Map()
    };
    
    // BREAKTHROUGH FEATURE: Security Metrics and Analytics
    this.securityMetrics = {
      threatsDetected: 0,
      threatsBlocked: 0,
      falsePositives: 0,
      responseTime: [],
      riskLevel: 'low'
    };
    
    console.log('[SECURITY MONITOR] 🛡️ Advanced security monitoring system initialized');
    this.startSecurityMonitoring();
    this.initializeSecurityPolicies();
  }

  /**
   * BREAKTHROUGH METHOD: Start comprehensive security monitoring
   */
  startSecurityMonitoring() {
    // Monitor security every 5 seconds for real-time threat detection
    this.securityInterval = setInterval(() => {
      this.performSecurityScan();
      this.analyzeSecurityPatterns();
      this.updateThreatIntelligence();
      this.adaptSecurityPolicies();
      this.generateSecurityReport();
    }, 5000);
    
    console.log('[SECURITY MONITOR] 🔍 Real-time security monitoring started');
  }

  /**
   * BREAKTHROUGH METHOD: Perform comprehensive security scan
   */
  async performSecurityScan() {
    const scanResults = {
      timestamp: Date.now(),
      networkSecurity: await this.securityLayers.networkSecurity.scan(),
      accessControl: await this.securityLayers.accessControl.analyze(),
      dataIntegrity: await this.securityLayers.dataIntegrity.verify(),
      threatDetection: await this.securityLayers.threatDetection.detect(),
      anomalyDetection: await this.securityLayers.anomalyDetection.analyze()
    };
    
    // Calculate overall security score
    const securityScore = this.calculateSecurityScore(scanResults);
    
    // Update risk level based on scan results
    this.updateRiskLevel(scanResults, securityScore);
    
    // Trigger automated responses if necessary
    await this.triggerAutomatedResponses(scanResults);
    
    // Store scan results for ML learning
    if (this.mlIntegration) {
      await this.mlIntegration.updateSecurityModel(scanResults);
    }
    
    return scanResults;
  }

  /**
   * BREAKTHROUGH METHOD: Analyze security patterns using ML
   */
  async analyzeSecurityPatterns() {
    if (!this.mlIntegration) return;
    
    try {
      const recentScans = this.getRecentSecurityScans();
      const patternAnalysis = await this.mlIntegration.analyzeSecurityPatterns(recentScans);
      
      // Update threat intelligence with new patterns
      patternAnalysis.emergingThreats.forEach(threat => {
        this.threatIntelligence.emergingPatterns.add(threat);
        this.threatIntelligence.riskScores.set(threat.id, threat.riskScore);
      });
      
      // Update mitigation strategies
      patternAnalysis.mitigationRecommendations.forEach(rec => {
        this.threatIntelligence.mitigationStrategies.set(rec.threatType, rec.strategy);
      });
      
      console.log(`[SECURITY MONITOR] 🧠 Analyzed security patterns: ${patternAnalysis.emergingThreats.length} new threats detected`);
      
    } catch (error) {
      console.error(`[SECURITY MONITOR] ❌ Error analyzing security patterns: ${error.message}`);
    }
  }

  /**
   * BREAKTHROUGH METHOD: Update threat intelligence database
   */
  updateThreatIntelligence() {
    // Update known threats with latest intelligence
    const currentThreats = this.getCurrentThreats();
    
    currentThreats.forEach(threat => {
      if (!this.threatIntelligence.knownThreats.has(threat.id)) {
        this.threatIntelligence.knownThreats.set(threat.id, {
          ...threat,
          firstSeen: Date.now(),
          occurrences: 1,
          severity: this.calculateThreatSeverity(threat)
        });
      } else {
        const existing = this.threatIntelligence.knownThreats.get(threat.id);
        existing.occurrences++;
        existing.lastSeen = Date.now();
        existing.severity = this.calculateThreatSeverity(threat, existing);
      }
    });
    
    // Clean up old threat intelligence (older than 7 days)
    this.cleanupOldThreatIntelligence();
  }

  /**
   * BREAKTHROUGH METHOD: Adapt security policies based on threat landscape
   */
  adaptSecurityPolicies() {
    const currentRiskLevel = this.securityMetrics.riskLevel;
    
    // Adjust access rules based on risk level
    if (currentRiskLevel === 'high' || currentRiskLevel === 'critical') {
      this.tightenSecurityPolicies();
    } else if (currentRiskLevel === 'low') {
      this.relaxSecurityPolicies();
    }
    
    // Update rate limits based on threat patterns
    this.updateRateLimits();
    
    // Adjust security levels for different components
    this.adjustComponentSecurityLevels();
  }

  /**
   * BREAKTHROUGH METHOD: Trigger automated security responses
   */
  async triggerAutomatedResponses(scanResults) {
    const highRiskThreats = this.identifyHighRiskThreats(scanResults);
    
    for (const threat of highRiskThreats) {
      const response = this.adaptivePolicies.autoResponses.get(threat.type);
      
      if (response) {
        console.log(`[SECURITY MONITOR] 🚨 Triggering automated response for ${threat.type}: ${response.action}`);
        
        try {
          await this.executeSecurityResponse(threat, response);
          this.securityMetrics.threatsBlocked++;
        } catch (error) {
          console.error(`[SECURITY MONITOR] ❌ Error executing security response: ${error.message}`);
        }
      }
    }
  }

  /**
   * BREAKTHROUGH METHOD: Execute security response actions
   */
  async executeSecurityResponse(threat, response) {
    switch (response.action) {
      case 'block_ip':
        await this.blockIPAddress(threat.sourceIP);
        break;
      case 'rate_limit':
        await this.applyRateLimit(threat.source, response.limit);
        break;
      case 'quarantine':
        await this.quarantineResource(threat.resource);
        break;
      case 'alert_admin':
        await this.alertAdministrator(threat, response.priority);
        break;
      case 'scale_security':
        await this.scaleSecurityResources(response.scaleFactor);
        break;
      default:
        console.log(`[SECURITY MONITOR] ⚠️ Unknown response action: ${response.action}`);
    }
  }

  /**
   * BREAKTHROUGH METHOD: Generate comprehensive security report
   */
  generateSecurityReport() {
    const report = {
      timestamp: Date.now(),
      riskLevel: this.securityMetrics.riskLevel,
      threatsDetected: this.securityMetrics.threatsDetected,
      threatsBlocked: this.securityMetrics.threatsBlocked,
      falsePositives: this.securityMetrics.falsePositives,
      averageResponseTime: this.calculateAverageResponseTime(),
      topThreats: this.getTopThreats(5),
      securityScore: this.calculateOverallSecurityScore(),
      recommendations: this.generateSecurityRecommendations(),
      emergingPatterns: Array.from(this.threatIntelligence.emergingPatterns).slice(0, 3)
    };
    
    // Emit security report for dashboard integration
    this.emit('securityReport', report);
    
    return report;
  }

  /**
   * BREAKTHROUGH METHOD: Initialize adaptive security policies
   */
  initializeSecurityPolicies() {
    // Default access rules
    this.adaptivePolicies.accessRules.set('default', {
      maxRequestsPerMinute: 100,
      allowedMethods: ['GET', 'POST'],
      requireAuthentication: true,
      allowedIPs: new Set(['127.0.0.1', '::1'])
    });
    
    // Default rate limits
    this.adaptivePolicies.rateLimits.set('api', { requests: 1000, window: 60000 });
    this.adaptivePolicies.rateLimits.set('ai_requests', { requests: 100, window: 60000 });
    
    // Security levels
    this.adaptivePolicies.securityLevels.set('low', { encryption: 'basic', monitoring: 'standard' });
    this.adaptivePolicies.securityLevels.set('medium', { encryption: 'enhanced', monitoring: 'detailed' });
    this.adaptivePolicies.securityLevels.set('high', { encryption: 'maximum', monitoring: 'comprehensive' });
    
    // Automated responses
    this.adaptivePolicies.autoResponses.set('brute_force', { action: 'block_ip', duration: 3600000 });
    this.adaptivePolicies.autoResponses.set('ddos', { action: 'rate_limit', limit: 10 });
    this.adaptivePolicies.autoResponses.set('malware', { action: 'quarantine', immediate: true });
    this.adaptivePolicies.autoResponses.set('data_breach', { action: 'alert_admin', priority: 'critical' });
    
    console.log('[SECURITY MONITOR] 📋 Adaptive security policies initialized');
  }

  /**
   * Helper methods for security operations
   */
  calculateSecurityScore(scanResults) {
    const scores = Object.values(scanResults)
      .filter(result => typeof result === 'object' && result.score)
      .map(result => result.score);
    
    return scores.length > 0 ? scores.reduce((sum, score) => sum + score, 0) / scores.length : 0.8;
  }

  updateRiskLevel(scanResults, securityScore) {
    if (securityScore < 0.3) {
      this.securityMetrics.riskLevel = 'critical';
    } else if (securityScore < 0.5) {
      this.securityMetrics.riskLevel = 'high';
    } else if (securityScore < 0.7) {
      this.securityMetrics.riskLevel = 'medium';
    } else {
      this.securityMetrics.riskLevel = 'low';
    }
  }

  calculateThreatSeverity(threat, existing = null) {
    let severity = threat.baseSeverity || 0.5;
    
    if (existing) {
      // Increase severity based on frequency
      severity += Math.min(0.3, existing.occurrences * 0.05);
    }
    
    return Math.min(1.0, severity);
  }

  identifyHighRiskThreats(scanResults) {
    const threats = [];
    
    Object.values(scanResults).forEach(result => {
      if (result.threats) {
        result.threats.forEach(threat => {
          if (threat.riskScore > 0.7) {
            threats.push(threat);
          }
        });
      }
    });
    
    return threats.sort((a, b) => b.riskScore - a.riskScore);
  }

  tightenSecurityPolicies() {
    // Reduce rate limits
    this.adaptivePolicies.rateLimits.forEach((limit, key) => {
      limit.requests = Math.floor(limit.requests * 0.5);
    });
    
    // Increase monitoring
    this.adaptivePolicies.securityLevels.set('current', { 
      encryption: 'maximum', 
      monitoring: 'comprehensive' 
    });
    
    console.log('[SECURITY MONITOR] 🔒 Security policies tightened due to high risk');
  }

  relaxSecurityPolicies() {
    // Restore normal rate limits
    this.adaptivePolicies.rateLimits.set('api', { requests: 1000, window: 60000 });
    this.adaptivePolicies.rateLimits.set('ai_requests', { requests: 100, window: 60000 });
    
    // Standard monitoring
    this.adaptivePolicies.securityLevels.set('current', { 
      encryption: 'enhanced', 
      monitoring: 'standard' 
    });
  }

  updateRateLimits() {
    // Adjust based on current threat landscape
    const threatCount = this.threatIntelligence.knownThreats.size;
    
    if (threatCount > 10) {
      this.adaptivePolicies.rateLimits.forEach((limit, key) => {
        limit.requests = Math.max(10, Math.floor(limit.requests * 0.8));
      });
    }
  }

  adjustComponentSecurityLevels() {
    const riskLevel = this.securityMetrics.riskLevel;
    
    // Adjust security levels based on current risk
    const securityConfig = this.adaptivePolicies.securityLevels.get(riskLevel) || 
                          this.adaptivePolicies.securityLevels.get('medium');
    
    this.adaptivePolicies.securityLevels.set('current', securityConfig);
  }

  // Mock implementation methods (would be real in production)
  async blockIPAddress(ip) {
    console.log(`[SECURITY MONITOR] 🚫 Blocked IP address: ${ip}`);
  }

  async applyRateLimit(source, limit) {
    console.log(`[SECURITY MONITOR] ⏱️ Applied rate limit to ${source}: ${limit} requests/min`);
  }

  async quarantineResource(resource) {
    console.log(`[SECURITY MONITOR] 🔒 Quarantined resource: ${resource}`);
  }

  async alertAdministrator(threat, priority) {
    console.log(`[SECURITY MONITOR] 📢 Alert sent to administrator: ${threat.type} (${priority})`);
  }

  async scaleSecurityResources(scaleFactor) {
    console.log(`[SECURITY MONITOR] 📈 Scaling security resources by factor: ${scaleFactor}`);
  }

  getCurrentThreats() {
    // Mock threat data
    return [
      { id: 'threat_1', type: 'brute_force', sourceIP: '192.168.1.100', baseSeverity: 0.6 },
      { id: 'threat_2', type: 'suspicious_activity', sourceIP: '10.0.0.50', baseSeverity: 0.4 }
    ];
  }

  getRecentSecurityScans() {
    // Mock recent scans data
    return [];
  }

  cleanupOldThreatIntelligence() {
    const sevenDaysAgo = Date.now() - (7 * 24 * 60 * 60 * 1000);
    
    for (const [threatId, threat] of this.threatIntelligence.knownThreats) {
      if (threat.firstSeen < sevenDaysAgo) {
        this.threatIntelligence.knownThreats.delete(threatId);
      }
    }
  }

  calculateAverageResponseTime() {
    const times = this.securityMetrics.responseTime;
    return times.length > 0 ? times.reduce((sum, time) => sum + time, 0) / times.length : 0;
  }

  getTopThreats(count) {
    return Array.from(this.threatIntelligence.knownThreats.values())
      .sort((a, b) => b.severity - a.severity)
      .slice(0, count);
  }

  calculateOverallSecurityScore() {
    const baseScore = 0.8;
    const threatPenalty = Math.min(0.3, this.securityMetrics.threatsDetected * 0.01);
    const responsePenalty = Math.min(0.2, this.calculateAverageResponseTime() / 10000);
    
    return Math.max(0, baseScore - threatPenalty - responsePenalty);
  }

  generateSecurityRecommendations() {
    const recommendations = [];
    
    if (this.securityMetrics.riskLevel === 'high' || this.securityMetrics.riskLevel === 'critical') {
      recommendations.push('Implement additional access controls');
      recommendations.push('Increase monitoring frequency');
      recommendations.push('Review and update security policies');
    }
    
    if (this.securityMetrics.falsePositives > 10) {
      recommendations.push('Tune threat detection algorithms to reduce false positives');
    }
    
    if (this.calculateAverageResponseTime() > 5000) {
      recommendations.push('Optimize security response time');
    }
    
    return recommendations;
  }

  /**
   * Get security summary
   */
  getSummary() {
    return {
      status: 'active',
      riskLevel: this.securityMetrics.riskLevel,
      threatsDetected: this.securityMetrics.threatsDetected,
      threatsBlocked: this.securityMetrics.threatsBlocked,
      securityScore: this.calculateOverallSecurityScore().toFixed(2),
      knownThreats: this.threatIntelligence.knownThreats.size,
      emergingPatterns: this.threatIntelligence.emergingPatterns.size,
      averageResponseTime: `${this.calculateAverageResponseTime().toFixed(0)}ms`
    };
  }

  /**
   * Cleanup method
   */
  destroy() {
    if (this.securityInterval) {
      clearInterval(this.securityInterval);
    }
    console.log('[SECURITY MONITOR] 🛑 Security monitoring stopped');
  }
}

// Mock Security Analyzer Classes
class NetworkSecurityAnalyzer {
  async scan() {
    return { score: Math.random() * 0.3 + 0.7, threats: [] };
  }
}

class AccessControlMonitor {
  async analyze() {
    return { score: Math.random() * 0.2 + 0.8, violations: [] };
  }
}

class DataIntegrityChecker {
  async verify() {
    return { score: Math.random() * 0.1 + 0.9, issues: [] };
  }
}

class ThreatDetectionEngine {
  async detect() {
    return { 
      score: Math.random() * 0.4 + 0.6, 
      threats: [
        { type: 'suspicious_activity', riskScore: Math.random() * 0.5 + 0.3 }
      ] 
    };
  }
}

class SecurityAnomalyDetector {
  async analyze() {
    return { score: Math.random() * 0.3 + 0.7, anomalies: [] };
  }
}