Security tool · cloud
s3scanner
Scans for open S3 buckets (and other cloud storage) and dumps their permissions. Fast cloud misconfig discovery.
Overview
Where s3scanner fits
Scans for open S3 buckets (and other cloud storage) and dumps their permissions. Fast cloud misconfig discovery.
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 pipxAuthorization required
pipx install s3scanner- 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.
Install with goAuthorization required
go install -v github.com/sa7mon/s3scanner@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
Scan bucket listAuthorization required
Populate placeholders only with assets that are explicitly in scope.
s3scanner -bucket-file {input}- 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.