OPEN SOURCE

Decoy: run attack campaigns against your own staging

We open-sourced the harness we use to test new attack strategies. Point it at staging and watch it work.

OPEN SOURCE

Decoy: run attack campaigns against your own staging

We open-sourced the harness we use to test new attack strategies. Point it at staging and watch it work.

OPEN SOURCE

Decoy: run attack campaigns against your own staging

We open-sourced the harness we use to test new attack strategies. Point it at staging and watch it work.

Sam Okafor

Security Engineer

4 min read

Why we opened it up

Teams kept asking how Feint decides what to try next. Decoy is the harness we use to develop those strategies, and it is now available on GitHub.

What it does

Give it a staging URL and a goal. Decoy maps the routes, plans a multi-step campaign and logs every request, so you can read exactly how it reasoned.

What it does not do

It will not run against a host you have not verified, and it does not open pull requests. That part stays in the product.

Get started

Clone the repo, add a target to the config and start a run. Your first campaign takes about ten minutes.

GET STARTED

Run your first attack on your own code.

Point Feint at staging. Within the hour you’ll have a proven finding, or a clean report you can show your auditor.

No credit card · First exploit within the hour

GET STARTED

Run your first attack on your own code.

Point Feint at staging. Within the hour you’ll have a proven finding, or a clean report you can show your auditor.

No credit card · First exploit within the hour

GET STARTED

Run your first attack on your own code.

Point Feint at staging. Within the hour you’ll have a proven finding, or a clean report you can show your auditor.

No credit card · First exploit within the hour

© 2026 Feint, Inc.

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