ProofRange is the technical assessment service from CloudBreach, a cloud security company. We believe the only way to truly evaluate cloud and security talent is to put it to the test in real environments, not multiple-choice quizzes. ProofRange drops candidates into live cloud and CTF-style challenges that mirror the systems, and the threats, they will face on the job.
Every scenario is built by security experts at CloudBreach, so the skills you measure are the skills attackers and defenders actually use in the wild.

To revolutionize recruitment by making it skill-centric, data-driven, and unbiased, ensuring companies hire talent based on actual capabilities rather than just credentials.

ProofRange is built and operated by CloudBreach, whose team of offensive security practitioners designs every challenge. These are not theoretical question banks. They are hands-on, lab-based scenarios built and validated through real engagements and active cloud security research.
Challenges designed by working offensive security professionals, grounded in real red-team operations.
Every assessment runs in a live cloud or lab environment, so you measure what candidates can actually do.
Scenarios track the latest real-world cloud attack techniques and published security research.

We focus on what candidates can do, not just what’s on their resume.
Smart analytics help recruiters make data-backed decisions.
From startups to enterprises, our platform adapts to every hiring need.
Our assessments provide an objective way to evaluate talent.
Backed by the cloud security expertise of CloudBreach, ProofRange makes technical hiring sharper, faster, and grounded in real-world skill. Whether you are building a startup team or scaling an enterprise workforce, you hire with the confidence that your assessments mirror the cloud threats your teams will actually face.