Principal · Enterprise Systems Architect & Cybersecurity Engineer
A builder first and a security engineer second, which is the combination the work at the edge of public records, LLMs, and blockchain actually demands. Nineteen-plus years architecting and shipping production systems, with CISSP-grade security depth layered on top.
Certified Information Systems Security Professional
Certified Secure Software Lifecycle Professional
Certified in Risk & Information Systems Control
Real Estate Sales Associate SL-3343735 · Part 107 Remote Pilot
Shirley Singleton is the principal of Secure Data Consortium, an independent practice in Jacksonville, Florida. The throughline across everything the practice does is the same: records exist, they are hard to reach, and they mean nothing until someone assembles them into a picture that a buyer, an attorney, or a court can rely on. County clerk filings, blockchain transactions, and mobile devices are three different sets of records posing that identical problem.
Her primary identity is builder and architect. Nineteen-plus years designing and delivering production systems across financial services, government, and security tooling, with the security credentials sitting on top as a multiplier rather than the foundation. Most security consultants do not ship code. Most developers do not think in threat models. The combination is what makes a data pipeline trustworthy and an adversarial test report defensible.
That career runs from infrastructure architecture at Bank of America and cross-platform identity management at Citigroup, through security risk and compliance work at Verizon Business and Walmart, to secure code review and penetration testing programs at Citizens Property Insurance. It then moved to Chainalysis, where she deployed airgapped blockchain investigation systems for U.S. and foreign government agencies and co-instructed cryptocurrency investigation training at the Federal Law Enforcement Training Center in Brunswick, Georgia.
Today the practice is deliberately narrow, and every engagement is project-shaped with a defined scope and a written deliverable.
Distressed property, probate, and tax deed lead data compiled daily from Duval County public records and delivered Tuesday through Saturday mornings, matched to the parcel.
Adversarial testing, evaluation harnesses, on-premises model deployment, RAG pipelines for regulated corpora, and EU AI Act Article 15 evidence packages.
Attorney-engaged identification, tracing, and valuation of digital assets in divorce, probate, and civil matters. Identification and tracing only; not recovery.
Android and iOS examination for civil matters, with deposition-grade written reports. Taken selectively.
Methodology is published rather than asserted. Two controlled prompt-injection studies totaling more than 1,800 trials across open-weight models are online with their harnesses on GitHub, alongside writeups on cryptocurrency tracing written for family-law, probate, and civil practitioners. Read the writings →
Project-shaped, with a defined scope, a fixed or capped fee, and a written deliverable. Remote-first. No open-ended retainers and no staff-augmentation arrangements. If a matter falls outside what this practice can defensibly do, you will be told that rather than sold something.
A scoping conversation costs nothing and usually settles quickly whether this practice is the right fit.