Authorization comes first
An objective is not permission. The approved systems, activities, timing, and stop authority must be explicit before testing begins.
Company / Stone Signal Labs
A focused practice for distributed security work.
Stone Signal Labs develops RookHaven and supports authorized security testing, evaluation, and assurance work. The focus is the connection between technical activity and the people responsible for it.
Product and practice.
RookHaven
A platform for coordinating approved remote assessment work around field appliances, protected workspaces, and review. It is currently a production candidate for controlled evaluation.
Understand the product →Authorized services
Assessments, architecture reviews, evaluation planning, assurance exercises, research, and training are scoped separately around the customer’s objective.
Compare service outputs →Meet the founder.
Jonathan Shuffler
Founder, owner & technical-review contact
Jonathan leads Stone Signal Labs and the development of RookHaven. His work focuses on authorized security assessment, field-appliance operations, and the practical requirements of deploying and maintaining security tools across distributed environments.
He brings product development and operational review together: defining what a system is intended to do, examining the evidence behind it, and keeping limitations visible before deployment decisions are made.
For product, technical-review, or company questions, contact info@stonesignallabs.com.
How work should be governed.
Evidence has a boundary
A result applies to the system and conditions tested. Similar hardware, a changed configuration, or a new operating context may require new evidence.
Exceptions remain visible
Open questions, excluded coverage, and accepted risks belong in the record. An unresolved item should not become an implied assurance claim.
Closeout is part of the scope
Findings, access, retained material, and follow-up ownership need a defined handoff, not just a final meeting.
How to read our public material.
Field Notes are published under Stone Signal Labs organizational authorship. They contain planning methods and clearly labeled illustrative examples—not customer outcomes, product benchmarks, or independent certifications.
Each resource identifies its practical output and supporting references. Product claims are kept separate from general assessment guidance. Where evidence or commercial terms are not published, the pages say so.
Jonathan Shuffler is the technical-review contact. New editorial material should not be read as a completed independent product review or a certification.
A public article cannot approve a deployment. Use it to prepare questions, record decisions, and identify the evidence your own reviewers need.
Browse the resource library →Before an engagement.
Confirm the contracting entity, responsible participants, relevant experience, scope, and support expectations during procurement. Agree responsibilities, deliverables, and commercial terms in writing before work begins.
Ask a company or procurement question