Security tool · recon
assetfinder
Tiny, fast passive subdomain finder. Great as an extra source to pipe into anew alongside subfinder.
Overview
Where assetfinder fits
Tiny, fast passive subdomain finder. Great as an extra source to pipe into anew alongside subfinder.
Detection-first use
Start with the least intrusive template that can distinguish your hypothesis from a normal response. Preserve raw output and a negative control.
Install
Installation references
Install with goAuthorization required
go install github.com/tomnomnom/assetfinder@latest- Positive signal
- Tool-specific output that supports the stated hypothesis.
- Negative control
- No result, or identical behavior against a known-safe control.
- Intrusiveness
- Review flags and target scope before execution.
Test safely
Command templates
Subdomains onlyAuthorization required
Populate placeholders only with assets that are explicitly in scope.
assetfinder --subs-only {domain}- Positive signal
- Tool-specific output that supports the stated hypothesis.
- Negative control
- No result, or identical behavior against a known-safe control.
- Intrusiveness
- Review flags and target scope before execution.
Related
Continue the workflow
Sources
Attribution and verification
Version history: normalized permanent page created 2026-08-20. Upstream activity and popularity are separate signals and do not establish tool safety.