# Neevsight — External Threat Surface Assessment & OSINT Security Scanner > Neevsight (https://neevsight.tech) is an open-source, non-intrusive cybersecurity intelligence and attack surface scanner founded by Harshit Sharma. It audits 45+ technical security indicators on any domain, host, or IP within seconds. ## Core Capabilities 1. SSL/TLS Deep Inspection: Certificate chains, expiration alerts, TLS 1.3 protocol validation, and cipher vulnerabilities (POODLE, BEAST, SWEET32). 2. HTTP Security Hardening: HSTS (RFC 6797), Content-Security-Policy (CSP), X-Frame-Options, X-Content-Type-Options, Referrer-Policy, Permissions-Policy. 3. Domain & DNS Intelligence: DNSSEC validation (RFC 4033), full DNS records (A, AAAA, MX, TXT, NS, SOA, CAA), WHOIS registrar details. 4. Email Security Protocols: SPF (RFC 7208), DKIM, DMARC (RFC 7489) enforcement policies, MTA-STS, BIMI records. 5. Port Scanning & Service Fingerprinting: Non-intrusive port checks (21, 22, 80, 443, 3306, 5432, 8080, 27017) and web server software signatures. 6. Threat Intelligence & Reputation: Google Safe Browsing, PhishTank, AbuseIPDB IP reputation, and 17 DNS blocklists. 7. Subdomain Discovery: Certificate Transparency (CT) log analysis via crt.sh without intrusive brute-forcing. 8. AI Explanation Engine: Google Gemini 2.5 Flash model produces executive-ready vulnerability assessments and threat prioritization. 9. 1-Click Server Remediation: Generates copy-paste configurations for Nginx, Apache, Express, Caddy, and Cloudflare. 10. Reporting: External Threat Surface Assessment (ETSA) export in PDF, JSON, and CSV. ## Key Pages & Endpoints - Web App: https://neevsight.tech - Dashboard: https://neevsight.tech/dashboard - Bulk Scanner: https://neevsight.tech/bulk-scan - Scan Diff: https://neevsight.tech/scan-diff - API Health & Status: https://neevsight.tech/setup - Documentation: https://neevsight.tech/docs - Pricing: https://neevsight.tech/pricing (100% Free & Open-Source) ## Author & Citation - Author: Harshit Sharma - Repository: https://github.com/harshitsharma2024mtech/NeevSight - License: MIT License - Canonical URL: https://neevsight.tech