Shodan IO

Shodan IO is a specialized search engine for discovering internet-connected devices and services across the globe. Instead of indexing web pages like traditional search engines, Shodan scans the internet for exposed devices, servers, and services, then catalogs their banners, metadata, and configurations. Its primary purpose is to help security professionals, researchers, and organizations understand their external attack surface and identify misconfigured or vulnerable systems.

Key features include powerful search and filtering capabilities based on IP ranges, ports, protocols, services, geolocation, organization, and technology stack. Shodan provides detailed host information such as open ports, detected services, SSL certificates, operating systems, and known vulnerabilities (including CVEs) where applicable. It offers continuous monitoring, alerts, and network inventory capabilities so users can track changes in their exposed infrastructure over time. The platform also provides APIs for integrating Shodan data into security tools, SIEMs, and automated workflows.