Exposure Search
Shodan
Shodan provides internet-wide visibility into exposed systems and service banners, helping defenders understand how their public services appear to outsiders.
Best For
- Checking how exposed services appear from the public internet
- Spotting unexpected ports, banners, or geolocation clues
- Reviewing public exposure after a deployment or network change
What Shodan Is For
Shodan indexes internet-facing systems and records details such as open services, response banners, certificate data, and other public metadata. For defenders, it acts as an external reality check: it shows what the internet can already see about your organization.
That makes it particularly useful for finding visibility gaps between what teams think is exposed and what is actually exposed.
How To Use It Safely
Use Shodan to search for domains, IP ranges, certificates, and organization identifiers that belong to approved scope. Review results for unexpected technologies, old services, or systems that appear in the wrong region or environment.
Because indexed data can lag behind reality, validate any concerning result directly with your infrastructure and hosting teams before treating it as an active exposure.
When To Use It
Use Shodan during external exposure reviews, cloud migration checks, and incident investigations where you need to understand whether a service has been visible to the broader internet.
It is also useful for leadership reporting because it translates technical exposure into simple, externally verifiable evidence.
Sample Commands and Output
Official Reference
Review the official documentation before using the tool in an authorized environment.
Visit Official DocumentationUse this tool only for systems, applications, and infrastructure you own or are explicitly authorized to assess.