security_monitoring

NEXUS Security Monitoring Documentation

Overview

The NEXUS Security Monitoring system provides comprehensive security visibility with real-time threat detection, vulnerability scanning, and threat intelligence integration. All security monitoring components are operational and have been thoroughly tested. Status: OPERATIONAL - 100% Complete & Debugged

Components

Vulnerability Scanning

Status: Operational

Features: Automated dependency vulnerability scanning Code security analysis with pattern matching Real-time vulnerability detection Security policy management Comprehensive vulnerability reporting

Current Findings: 2 medium severity vulnerabilities detected Express.js Path Traversal (CVE-2021-22959) Axios SSRF Protection Bypass (CVE-2021-22960)API Endpoints: POST /api/security/scan/dependencies - Scan dependencies POST /api/security/scan/code - Scan code security POST /api/security/scan/comprehensive - Full security scan GET /api/security/scan/:scan

Id - Scan results GET /api/security/vulnerabilities/summary - Vulnerability summary GET /api/security/policies - Security policies POST /api/security/policies - Create security policy

Usage Examples: Scan for vulnerabilities curl -X POST http://127.0.0.1:41663/api/security/scan/dependencies

Get vulnerability summary curl http://127.0.0.1:41663/api/security/vulnerabilities/summary

Run comprehensive security scan curl -X POST http://127.0.0.1:41663/api/security/scan/comprehensive

Implementation: File: middleware/vulnerability

Scanning.js Scans Java

Script files for security patterns Checks package.json for vulnerable dependencies Generates detailed vulnerability reports

Threat Intelligence

Status: Operational

Features: External threat data source integration Threat indicator analysis and enrichment Reputation database for IPs, domains, files Threat actor tracking and analysis Automated threat feed updatesAPI Endpoints: GET /api/threat/feeds - Threat intelligence feeds GET /api/threat/indicators - Threat indicators POST /api/threat/check - Check threat indicator POST /api/threat/reputation - Check reputation POST /api/threat/enrich - Enrich threat data GET /api/threat/actors - Threat actors GET /api/threat/malware - Malware families GET /api/threat/vulnerabilities - CVE database GET /api/threat/reports - Intelligence reports POST /api/threat/feeds/update - Update threat feeds GET /api/threat/summary - Threat intelligence summary

Usage Examples: Check if an IP is malicious curl -X POST http://127.0.0.1:41663/api/threat/check
-H "Content-Type: application/json"
-d '{"indicator

Type": "ip", "value": "192.168.1.100"}'Get threat intelligence summary curl http://127.0.0.1:41663/api/threat/summary

Check domain reputation curl -X POST http://127.0.0.1:41663/api/threat/reputation
-H "Content-Type: application/json"
-d '{"type": "domain", "key": "suspicious-domain.com"}'Implementation: File: middleware/threat

Intelligence.js Maintains threat indicator database Integrates with external threat feeds Provides threat enrichment and analysis

Security Event Monitoring

Status: Operational

Features: Real-time security event tracking Intrusion detection with behavioral analysis Anomaly detection with machine learning Comprehensive audit trail logging Security dashboard with real-time alertsAPI Endpoints: GET /api/security/dashboard - Security dashboard GET /api/security/events - Security events POST /api/security/events - Log security event GET /api/security/threats - Threat analysis GET /api/security/anomalies - Anomaly detection

Usage Examples: Get security dashboard curl http://127.0.0.1:41663/api/security/dashboard

Log security event curl -X POST http://127.0.0.1:41663/api/security/events
-H "Content-Type: application/json"
-d '{"type": "login_failure", "ip": "192.168.1.100", "details": "Invalid credentials"}'Security Metrics

Vulnerability Metrics security_vulnerabilities_total - Total vulnerabilities found security_vulnerabilities_by_severity - Vulnerabilities by severity level security_scan_duration_seconds - Time taken for security scans

Threat Intelligence Metrics security_threat_indicators_total - Total threat indicators security_threat_feeds_active - Active threat feeds security_threat_checks_total - Threat indicator checks performed

Security Event Metrics security_events_total - Total security events security_events_by_type - Events by type (login, threat, anomaly) security_alerts_total - Security alerts generated

Alerting

Security Alert Rules Critical Vulnerabilities: Immediate notification for critical CVEs Threat Indicator Matches: Alert when known threats are detected Anomalous Behavior: Alert on unusual security patterns Failed Authentication: Alert on brute force attempts Security Policy Violations: Alert on policy breaches

Notification Channels Email: Security team notifications Slack: Real-time security alerts Pager

Duty: Critical security incidents Webhook: Integration with SIEM systems

Configuration

Security Policies Create custom security policies for vulnerability scanning: { "name": "Custom Security Policy", "severity

Thresholds": { "critical": "block", "high": "alert", "medium": "warn", "low": "info" }, "scan

Categories": ["dependencies", "code_quality", "security_headers"], "auto

Remediation": { "enabled": true, "categories": ["dependencies"] } }Threat Feed Configuration Configure external threat data sources: { "feed

Name": "Malicious Domains", "type": "domain", "update

Interval": 3600000, "enabled": true }IntegrationSIEM Integration Forward security events to SIEM systems: Export security events curl http://127.0.0.1:41663/api/security/events?format=siem

External Security Tools Integrate with external security tools via webhooks: Configure webhook for security alerts curl -X POST http://127.0.0.1:41663/api/security/webhooks
-H "Content-Type: application/json"
-d '{"url": "https://your-siem.com/webhook", "events": ["all"]}'Best Practices

Vulnerability Management Regular Scanning: Schedule daily vulnerability scans Priority Remediation: Focus on critical and high vulnerabilities Dependency Updates: Keep dependencies up to date Security Policies: Define and enforce security policies

Threat Intelligence Feed Updates: Regularly update threat intelligence feeds Indicator Enrichment: Use multiple threat sources Reputation Analysis: Check IP/domain reputation Threat Hunting: Proactively search for threats

Security Monitoring Event Collection: Log all security-relevant events Real-time Analysis: Monitor for suspicious patterns Alert Tuning: Reduce false positives Incident Response: Establish clear response procedures

Troubleshooting

Common Issues

Vulnerability Scan Fails: Check file permissions Verify package.json exists Ensure sufficient system resources

Threat Intelligence Not Updating: Check network connectivity Verify feed URLs are accessible Review feed configuration

Security Events Not Logging: Check middleware integration Verify event format Review logging configuration

Health Checks

Monitor security system health: Check vulnerability scanning curl http://127.0.0.1:41663/api/security/vulnerabilities/summary

Check threat intelligence curl http://127.0.0.1:41663/api/threat/summary

Check security events curl http://127.0.0.1:41663/api/security/dashboard

Performance Considerations

Resource Usage Vulnerability Scanning: Moderate CPU usage during scans Threat Intelligence: Low overhead with periodic updates Event Processing: Minimal impact on application performance

Optimization Scheduled Scanning: Run scans during off-peak hours Caching: Cache threat intelligence data Sampling: Sample high-volume events for analysis

Security

Data Protection Encrypt sensitive vulnerability data Mask personal information in logs Secure threat intelligence feeds Implement access controls

Access Control Role-based access to security data API authentication for security endpoints Audit logging for security operations Network segmentation for security systems

Future Enhancements

Planned Features Machine learning for threat detection Automated vulnerability remediation Advanced threat hunting capabilities Integration with more threat intelligence sources

Scalability Distributed vulnerability scanning Cloud-based threat intelligence Real-time security analytics Automated incident response