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Shodan: Internet of Things Search Engine for Cyber Intelligence
Comprehensive guide to Shodan, the search engine for Internet-connected devices, for cybersecurity research and infrastructure intelligence.
info About This Tool
Tool Overview
Shodan is a search engine that scans and indexes Internet-connected devices, including servers, routers, IoT devices, and industrial control systems. It provides visibility into the exposed attack surface of organizations and critical infrastructure.
Core Capabilities
- Global device scanning and indexing
- Service and banner identification
- Vulnerability detection
- Geographic and organizational filtering
- Historical data and trend analysis
Data Collected
Network Information
- IP addresses and hostnames
- Open ports and services
- SSL certificates
- Banner data and fingerprints
Device Types
- Web servers and databases
- Industrial control systems (SCADA/ICS)
- Video cameras and DVRs
- Medical devices
- IoT sensors and controllers
Intelligence Applications
- Attack surface mapping
- Vulnerability assessment
- Critical infrastructure monitoring
- Threat intelligence gathering
- Competitive intelligence
Advanced Features
- Shodan Monitor for continuous monitoring
- Internet Census data
- Vulnerability database integration
- API access for automation
Ethical Considerations
While Shodan provides valuable intelligence, users must ensure legal and ethical use. Unauthorized scanning or exploitation of discovered systems is illegal.
Limitations
- Some features require paid subscription
- Data currency depends on scan frequency
- Cannot access authenticated or firewalled systems
Classification: UNCLASSIFIED // FOR OFFICIAL USE ONLY