Principal · Enterprise Systems Architect & Cybersecurity Engineer
A builder first and a security engineer second, a rare combination that the work at the edge of LLMs, forensics, and blockchain actually demands. Over a decade 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
Shirley Singleton is the principal of Secure Data Consortium, an independent cybersecurity practice. Her primary identity is that of a builder and architect: over a decade designing and delivering production systems across financial services, government, and security tooling. Her CISSP, CSSLP, and CRISC credentials are the multiplier on top of that engineering foundation, not a substitute for it.
That combination is deliberately chosen for the practice's three areas. LLM security rewards someone who can both build the application and break it. Forensics rewards someone who understands how systems actually store and leak data. Cryptocurrency investigation rewards someone who has worked inside the tooling the industry was built on.
Her early career was spent leading design and development teams, including a Design Team Lead role at Bank of America working in .NET, Java, and SOA, and an identity-management team lead role at Citigroup. She later moved deeper into security, holding security-analyst and security-engineer roles supporting organizations including Verizon, Walmart, and Citizens Property Insurance.
As a Customer Success Engineer at Chainalysis, she deployed blockchain-investigation tooling, including airgapped solutions, for government agencies, and co-instructed cryptocurrency-investigation training at the Federal Law Enforcement Training Center (FLETC) in Brunswick, Georgia.
Today she runs Secure Data Consortium with a focus on experienced, hands-on delivery: active adversarial research (published prompt-injection studies, a registered security researcher on the Coinbase HackerOne program), a working portfolio of shipped software, and client engagements delivered as written, defensible reports.
Independent practice in LLM application security, consent-based mobile forensics, and cryptocurrency investigation. Project-based engagements with written deliverables.
Deployed blockchain-investigation solutions, including airgapped configurations, for government agencies. Co-instructed cryptocurrency-investigation training at FLETC.
Security and engineering roles supporting Citizens Property Insurance and Citigroup, spanning identity management, risk, and information-security engineering.
Security analysis and administration supporting large enterprise environments.
Led design and development teams building enterprise applications in .NET, Java, and service-oriented architecture.
Whether it's an LLM going to production, a device that needs examining, or funds that need tracing, send a note and you'll hear back directly.