Monitoring and Incident Response

Monitoring and Incident Response

Effective CSP requires continuous monitoring and well-defined incident response procedures:

// CSP Monitoring and Response System
class CSPMonitoringSystem {
  constructor(config) {
    this.config = config;
    this.alerts = [];
    this.metrics = this.initializeMetrics();
  }
  
  initializeMetrics() {
    return {
      violations: {
        total: 0,
        byDirective: {},
        bySource: {},
        timeline: []
      },
      performance: {
        headerSize: [],
        parseTime: [],
        blockingEvents: []
      },
      security: {
        attacksBlocked: 0,
        suspiciousPatterns: [],
        knownThreats: []
      }
    };
  }
  
  createMonitoringDashboard() {
    return {
      realTimeMetrics: {
        violationRate: this.calculateViolationRate(),
        topViolations: this.getTopViolations(10),
        performanceImpact: this.measurePerformanceImpact(),
        securityScore: this.calculateSecurityScore()
      },
      
      alerts: {
        critical: [
          {
            condition: 'violation_spike',
            threshold: 'rate > baseline * 5',
            action: 'immediate_investigation'
          },
          {
            condition: 'known_attack_pattern',
            threshold: 'pattern_match',
            action: 'block_and_alert'
          }
        ],
        warning: [
          {
            condition: 'new_violation_source',
            threshold: 'unknown_domain',
            action: 'review_and_classify'
          },
          {
            condition: 'performance_degradation',
            threshold: 'parse_time > 50ms',
            action: 'optimize_policy'
          }
        ]
      }
    };
  }
  
  implementIncidentResponse() {
    return {
      playbook: {
        detection: {
          automated: [
            'Real-time violation monitoring',
            'Pattern matching for known attacks',
            'Anomaly detection algorithms'
          ],
          manual: [
            'Security team review',
            'User reports',
            'Periodic audits'
          ]
        },
        
        classification: {
          levels: {
            P1: 'Active attack or critical functionality broken',
            P2: 'Potential security issue or major feature impact',
            P3: 'Minor functionality impact or false positive',
            P4: 'Optimization opportunity'
          },
          
          criteria: {
            P1: [
              'Violation rate > 1000/minute',
              'Known attack signature detected',
              'Critical business function affected'
            ],
            P2: [
              'Violation rate > 100/minute',
              'New suspicious pattern',
              'Important feature degraded'
            ]
          }
        },
        
        response: {
          P1: {
            immediate: [
              'Page security team',
              'Implement emergency CSP changes',
              'Enable additional logging'
            ],
            followup: [
              'Root cause analysis',
              'Security patch deployment',
              'Post-incident review'
            ]
          },
          P2: {
            immediate: [
              'Notify security team',
              'Investigate violation source',
              'Assess user impact'
            ],
            followup: [
              'Policy adjustment if needed',
              'Documentation update',
              'Monitoring enhancement'
            ]
          }
        }
      }
    };
  }
}