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SleuthX

For Individuals & Families

About SleuthX

Court-admissible forensics for individuals, families, and attorneys. Founded by Quinnlan Varcoe — SANS-credentialed examiner with 9 active GIAC certifications.

The team behind the agent

Quinnlan Varcoe is Founder and CEO. She holds a Bachelor of Science in cybersecurity from SANS Technology Institute and 9 active certifications across GIAC, including GCIH, GCIA, and GSEC. She designed the court-admissible forensic methodology that the SleuthX agent encodes and trains on, and she is the named expert witness on litigation engagements covering family law, commercial litigation, and IP disputes.

Alex Riffenburgh, Co-Founder and CTO, leads engineering and the offensive-security work that pressure-tests the agent before any finding ships. The agent (SleuthX) scales the procedural work that previously consumed senior-analyst hours, under the methodology Quinn designed.

The 9 active certifications

Quinn's credential mix is what supports court qualification on the litigation side and credible methodology on the enterprise side. Every certification listed here isactive and verifiable directly with the issuing body. Lapsed certifications are not shown.

All 9 GIAC certifications are publicly verifiable in the GIAC Certified Professional directory (Analyst ID 201058).

Court-admissible methodology

Evidence is preserved using forensically sound acquisition methods. Chain of custody is documented. Methodology aligns with FRE 901 and FRCP 26. Reports are written for non-technical decision-makers but defensible under technical scrutiny in deposition or trial. Quinn is qualified to testify under Daubert and Frye standards on the work product. SleuthX, the AI agent, operates inside that same methodology under principal review.

Building toward a licensed PI agency

Digital forensics and incident response are notregulated under PI licensure — that's a different regulatory regime. SleuthX runs DFIR and credentialed-examiner work in-house today. Where a case calls for licensed private-investigator work (surveillance, fieldwork, certain pre-employment investigations, particular evidentiary chains), we coordinate that work through our licensed-investigator partner network.

Quinn qualifies as principal applicantunder Florida's Class C PI license rules — the company's founding jurisdiction. The longer-term company plan is multi-state PI agency licensure, starting with Florida and building out via reciprocity, qualifying-manager hires, and targeted acquisition of existing licensed practices. SleuthX is not currently a licensed PI agency; every claim about licensure on this site is forward-looking. When that status changes, the language on this page changes.

Expert-witness work

Expert witness engagements cover family law, commercial litigation, IP disputes, breach-causation matters, and arbitration. Available for deposition, hearing, andtrial. Available for rebuttal of opposing-counsel forensic reports. Engagements are structured under the retaining attorney's privilege.

How an engagement begins

  1. Confidential consultation. NDA-protected. 30 to 60 minutes. Direct conversation with Quinn. No sales process.
  2. Scoped engagement. Written proposal with defined deliverables and pricing. Per-case, hourly with milestone caps, or subscription depending on what fits.
  3. Investigation, review, and findings. Court-admissible standards. Written report you can act on, reviewed and signed off by Quinn.

What this means for you

Why this work matters

Cellebrite and Belkasoft licensing costs $10K to $30K per year per analyst, which forces traditional forensic services to charge $5K to $15Kper case. The people who need help most get priced out. SleuthX, the AI agent layered on this practice, extends court-grade methodology to consumer pricing tiers — that is what makes personal cybersecurity services for individuals and families affordable for real people. Quinn still owns case judgment.

Meet Your Practitioner

Quinnlan Varcoe

Founder & CEO

GIAC-certified · 9 industry certifications

With operational experience across Fortune 50 security programs and the defense industrial base, Quinnlan founded SleuthX in 2022 to provide clients with the caliber of expertise typically reserved for the largest enterprises. Her work in threat intelligence and digital forensics has earned the trust of 26,000+ cybersecurity professionals who follow her analysis.

“26,000 professionals follow my work because I say what others won't — and I can back it up technically.”

Fortune 50 BackgroundDefense IndustryThreat IntelligenceDigital PrivacyIncident Response
Quinnlan Varcoe, Founder & CEO

Practice Team

The two people building SleuthX.

Quinnlan Varcoe, Founder and CEO

Founder & CEO

Quinnlan Varcoe

Founder and CEO

Founder and CEO. Bachelor of Science in cybersecurity from SANS Technology Institute. 9 active SANS GIAC certifications — including GCIH, GCIA, and GSEC — the credential mix that supports expert-witness qualification under Daubert and Frye. Designed the court-admissible forensic methodology that SleuthX encodes and trains on. Roughly a decade in incident response and threat intelligence for Fortune 50 enterprises and the defense industrial base before founding the company.

Designed the methodology SleuthX is built on.

Alex Riffenburgh, Co-Founder & CTO

Co-Founder & CTO

Alex Riffenburgh

Co-Founder & CTO

OSCP-certified offensive security engineer with experience across red teaming, penetration testing, digital forensics, and AI security. Bachelor of Science in Computer Science from Western Governors University, completed in six months. In 2025 she shipped exploit proof-of-concepts and patches against AI training infrastructure as a contractor in the AI security space — the same threat surface SleuthX defends consumers from. Active CTF competitor, DEFCON and BSides regular, contributor to non-profit OSINT projects. At SleuthX, she leads the engineering and the offensive-security work that pressure-tests the agent before any finding ships.

Leads the technical build of the AI agent.

Quinnlan designed the forensic methodology the agent is built on. Alex leads engineering and the offensive-security work that pressure-tests the agent. The company operates under SleuthX, Inc.

How We Work

A confidential, structured engagement.

01

Confidential Consultation

A direct conversation with Quinn, the founder and CEO who oversees every engagement. NDA-protected. No sales process.

02

Scoped Engagement

A clear written proposal with defined deliverables, timeline, and pricing. No hidden costs.

03

Investigation and Findings

Forensic work conducted to court-admissible standards, with regular communication and a written summary you can act on.

Certified Expertise

GIAC

Frequently asked about Quinn and the practice

Who is Quinn Varcoe?
Quinn Varcoe is the founder and CEO of SleuthX. She holds a Bachelor of Science in cybersecurity from SANS Technology Institute and 9 active SANS GIAC certifications — including GCIH, GCIA, and GSEC — the credential mix that supports qualification as an expert witness in federal court under Daubert and Frye standards, and she is the named expert witness on litigation engagements. Before founding the company she spent roughly a decade in incident response and threat intelligence for Fortune 50 enterprises and the defense industrial base. She designed the court-admissible forensic methodology that the SleuthX AI agent encodes and trains on.
What is the principal-led practice model?
Quinnlan Varcoe is Founder and CEO; she designed the forensic methodology SleuthX is built on and is the named expert witness for litigation engagements. Alex Riffenburgh is Co-Founder and CTO; she leads engineering and the offensive-security work that pressure-tests the agent before any finding ships. The agent scales the procedural work that previously consumed senior-analyst hours, under the same methodology. This is how the company delivers court-grade work at consumer pricing tiers.
How many certifications does the practice hold?
Quinn personally holds 9 active GIAC certifications, spanning incident response, intrusion analysis, cloud security automation, mobile device security, Python coding, and information-security governance. The credential mix is what supports court qualification on the litigation side and credible methodology on the enterprise side. The full registry is published in the certifications section below on this page; every cert is verifiable directly with the issuing body, and lapsed certifications are not displayed.
What is the difference between SleuthX and Varcoe?
SleuthX and Varcoe are two brands operated by the same legal entity, SleuthX, Inc., a Delaware C-corporation. SleuthX is the umbrella brand for forensic and investigative work, including litigation support, personal forensics, and family-office services. Varcoe (varcoe.ai) is the B2B sister brand focused on enterprise cybersecurity (vCISO, MDR, compliance, offensive security). The investigators and engineers, the methodology, and the contracting entity are the same; the brand surfaces serve different audiences.
Where are you located?
The practice is headquartered in Naples, Florida. Engagements are taken nationwide. Most forensic and consulting work is performed remotely with court-admissible chain of custody for shipped or imaged devices. On-site response is available for active incidents, expert-witness deposition or trial, and enterprise engagements that require in-person work. International engagements are considered case by case, subject to export-control rules.
How do you decide which cases to take?
Three filters. First, fit: the case has to actually need digital forensics or incident response, not a simpler step we can refer out (a police report, an IC3 filing, a platform-native recovery flow). Second, capacity: we cap concurrent active matters so every engagement gets Quinn's direct review and the practitioner team's focused execution. Third, ethics: we decline cases where the requested outcome would require methodology we cannot defend in court, unlawful surveillance of another person, or work that conflicts with a current client. If we decline, we tell you why and where possible refer you to someone who can help.
Quinnlan Varcoe, Founder & CEO
Quinnlan Varcoe
GIAC-certified · Founder & CEO

Schedule Your Session

Schedule a confidential consultation

A direct conversation with Quinn, the founder and CEO who oversees every engagement. NDA-protected. No sales process. Most engagements begin within 48 hours.

Free, confidential · NDA-protected · no obligation.

  1. 1. Book a 15-minute call — we scope your situation, no charge.
  2. 2. You get a written scope — deliverables, timeline, and price — before any work begins.
  3. 3. Approve it and we start; most engagements begin within 48 hours.

Transparent pricing

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