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Incident Response

Overview​

The Incident Response system provides automated and manual procedures for handling security incidents in the RAG system. This includes detection, analysis, containment, eradication, and recovery processes.

Incident Response Lifecycle​

1. Detection and Analysis​

Automated Detection​

def detect_security_incident(event):
    if event.threat_level == ThreatLevel.CRITICAL:
        return create_incident(event)
    elif event.threat_level == ThreatLevel.HIGH:
        return escalate_incident(event)
    else:
        return log_event(event)

Threat Analysis​

def analyze_threat(event):
    analysis = {
        'threat_type': event.injection_type,
        'confidence': event.confidence,
        'patterns': event.detected_patterns,
        'impact': assess_impact(event),
        'severity': event.threat_level
    }
    
    return analysis

2. Containment​

Immediate Actions​

def contain_incident(incident):
    if incident.severity == "critical":
        # Immediate containment
        block_user(incident.user_id)
        increase_monitoring(incident.user_id)
        notify_security_team(incident)
    elif incident.severity == "high":
        # Rapid containment
        increase_monitoring(incident.user_id)
        notify_security_team(incident)
    else:
        # Standard containment
        log_incident(incident)

User Blocking​

def block_user(user_id, duration="temporary"):
    if duration == "temporary":
        set_temporary_block(user_id, hours=24)
    elif duration == "permanent":
        set_permanent_block(user_id)
    
    log_user_block(user_id, duration)

3. Eradication​

Threat Removal​

def eradicate_threat(incident):
    # Remove malicious patterns
    update_detection_rules(incident.patterns)
    
    # Clean affected systems
    clean_user_sessions(incident.user_id)
    
    # Update security measures
    enhance_security_controls()

System Cleaning​

def clean_system(incident):
    # Clear user sessions
    clear_user_sessions(incident.user_id)
    
    # Reset user risk scores
    reset_user_risk_score(incident.user_id)
    
    # Update security logs
    update_security_logs(incident)

4. Recovery​

System Restoration​

def restore_system(incident):
    # Restore normal operations
    enable_normal_operations()
    
    # Update security measures
    implement_enhanced_security()
    
    # Monitor for recurrence
    increase_monitoring_period(incident.user_id)

User Communication​

def communicate_with_user(user_id, incident):
    message = create_user_communication(incident)
    send_user_notification(user_id, message)
    
    if incident.severity in ["high", "critical"]:
        schedule_user_education(user_id)

Automated Response Procedures​

Critical Threats​

def handle_critical_threat(event):
    actions = [
        "Immediately block all queries from affected users",
        "Activate emergency security protocols",
        "Notify security team and management",
        "Begin forensic analysis of attack vectors",
        "Implement additional monitoring",
        "Consider system lockdown if necessary"
    ]
    
    for action in actions:
        execute_action(action, event)

High Threats​

def handle_high_threat(event):
    actions = [
        "Block queries from high-risk users",
        "Increase monitoring frequency",
        "Notify security team",
        "Review and update security rules",
        "Analyze attack patterns",
        "Consider user account suspension"
    ]
    
    for action in actions:
        execute_action(action, event)

Medium Threats​

def handle_medium_threat(event):
    actions = [
        "Increase monitoring for affected users",
        "Log detailed security events",
        "Review user activity patterns",
        "Update security rules if needed",
        "Notify security team if pattern continues"
    ]
    
    for action in actions:
        execute_action(action, event)

Escalation Matrix​

Immediate Escalation (0 minutes)​

  • Critical threats
  • System compromises
  • Data breaches
  • Service disruptions

Rapid Escalation (5 minutes)​

  • High threats
  • Multiple attack attempts
  • Suspicious user behavior
  • Performance issues

Standard Escalation (30 minutes)​

  • Medium threats
  • Pattern analysis
  • User complaints
  • System anomalies

Delayed Escalation (1 hour)​

  • Low threats
  • Routine monitoring
  • User education
  • System maintenance

Forensic Analysis​

Data Collection​

def collect_forensic_data(incident):
    data = {
        'event_logs': get_event_logs(incident),
        'user_activity': get_user_activity(incident.user_id),
        'system_logs': get_system_logs(incident),
        'network_traffic': get_network_traffic(incident)
    }
    
    return data

Timeline Reconstruction​

def reconstruct_timeline(incident):
    events = get_related_events(incident)
    timeline = []
    
    for event in sorted(events, key=lambda x: x.timestamp):
        timeline.append({
            'timestamp': event.timestamp,
            'datetime': datetime.fromtimestamp(event.timestamp),
            'threat_level': event.threat_level.value,
            'query': event.query[:100] + "..." if len(event.query) > 100 else event.query,
            'action_taken': event.action_taken
        })
    
    return timeline

Attack Pattern Analysis​

def analyze_attack_patterns(incident):
    patterns = {}
    
    for event in get_related_events(incident):
        for pattern in event.detected_patterns:
            patterns[pattern] = patterns.get(pattern, 0) + 1
    
    return patterns

Impact Assessment​

def assess_impact(incident):
    impact = {
        'affected_users': get_affected_users(incident),
        'data_exposed': get_exposed_data(incident),
        'system_impact': get_system_impact(incident),
        'business_impact': get_business_impact(incident)
    }
    
    return impact

Incident Reporting​

Incident Report Structure​

def generate_incident_report(incident):
    report = {
        'incident_id': incident.incident_id,
        'timestamp': incident.timestamp,
        'severity': incident.severity,
        'title': incident.title,
        'description': incident.description,
        'affected_systems': incident.affected_systems,
        'attack_vector': incident.attack_vector,
        'impact_assessment': incident.impact_assessment,
        'containment_actions': incident.containment_actions,
        'recovery_actions': incident.recovery_actions,
        'lessons_learned': incident.lessons_learned,
        'status': incident.status,
        'assigned_team': incident.assigned_team
    }
    
    return report

Executive Summary​

def create_executive_summary(incident):
    summary = {
        'incident_overview': f"Security incident {incident.incident_id} occurred at {incident.timestamp}",
        'severity': incident.severity,
        'impact': incident.impact_assessment,
        'actions_taken': incident.containment_actions,
        'current_status': incident.status,
        'next_steps': get_next_steps(incident)
    }
    
    return summary

Communication Procedures​

Internal Communication​

Security Team​

  • Immediate notification for critical incidents
  • Detailed technical analysis
  • Response coordination
  • Status updates

Management​

  • Executive summary
  • Business impact assessment
  • Resource requirements
  • Decision points

IT Operations​

  • System status updates
  • Technical details
  • Recovery procedures
  • Maintenance windows

External Communication​

Users​

  • Service status updates
  • Security advisories
  • Educational content
  • Support information

Partners​

  • Incident notifications
  • Security updates
  • Compliance reporting
  • Best practices sharing

Recovery Procedures​

System Recovery​

def recover_system(incident):
    # Restore normal operations
    enable_normal_operations()
    
    # Implement enhanced security
    deploy_enhanced_security_measures()
    
    # Monitor for recurrence
    increase_monitoring_frequency()
    
    # Update documentation
    update_incident_documentation(incident)

User Recovery​

def recover_user_access(user_id, incident):
    # Verify user identity
    verify_user_identity(user_id)
    
    # Reset user risk score
    reset_user_risk_score(user_id)
    
    # Provide security education
    schedule_user_education(user_id)
    
    # Monitor user activity
    increase_user_monitoring(user_id)

Data Recovery​

def recover_data(incident):
    # Restore from backups
    restore_from_backup(incident.affected_systems)
    
    # Verify data integrity
    verify_data_integrity()
    
    # Update access controls
    update_access_controls()
    
    # Monitor data access
    monitor_data_access()

Lessons Learned​

Post-Incident Review​

def conduct_post_incident_review(incident):
    review = {
        'incident_summary': incident.description,
        'root_cause': identify_root_cause(incident),
        'response_effectiveness': assess_response_effectiveness(incident),
        'improvements_needed': identify_improvements(incident),
        'prevention_measures': recommend_prevention_measures(incident)
    }
    
    return review

Process Improvements​

def implement_process_improvements(incident):
    improvements = [
        "Update detection rules based on incident patterns",
        "Enhance monitoring capabilities",
        "Improve response procedures",
        "Strengthen security controls",
        "Update training materials"
    ]
    
    for improvement in improvements:
        implement_improvement(improvement)

Training and Drills​

Incident Response Training​

  • Regular training sessions
  • Role-based training
  • Scenario-based exercises
  • Tabletop exercises

Security Drills​

def conduct_security_drill():
    # Simulate security incident
    simulated_incident = create_simulated_incident()
    
    # Test response procedures
    response_time = test_response_procedures(simulated_incident)
    
    # Evaluate performance
    performance = evaluate_response_performance(response_time)
    
    # Identify improvements
    improvements = identify_improvements(performance)
    
    return improvements

Regulatory Requirements​

  • GDPR compliance
  • SOC 2 requirements
  • ISO 27001 standards
  • Industry regulations
  • Evidence preservation
  • Chain of custody
  • Privacy protection
  • Disclosure requirements

Documentation Requirements​

  • Incident logs
  • Response procedures
  • Evidence collection
  • Legal documentation