Nishant Tyagi · Cybersecurity · AI Security · Agentic Systems

Cybersecurity · AI Security · Agentic Systems

Cybersecurity engineer, independent researcher, and inventor working at the intersection of AI security, detection engineering, and agentic systems.

I build security infrastructure for complex systems: intrusion prevention, phishing detection, cloud-scale platforms, AI security controls, and guardrails for LLM and agentic workflows. I have 20+ years of experience across cybersecurity, infrastructure, applied AI, and secure platform architecture.

cybertect.ai · LinkedIn · ORCID

sigmalint · ESLint-style linter for Sigma detection rules, with deterministic quality checks for maintainability, metadata hygiene, logic structure, and platform portability. MIT licensed, available on PyPI, and citable via DOI.

prompt-injection-scanner · Defensive tool for detecting prompt injection attacks in LLM applications. Multi-stage pipeline (heuristics, vector similarity, LLM guardian) with structured-output policy guardrails.

Upstream · Machine-readable per-rule changelog for the Sigma standard: SigmaHQ/sigma #6050.

• SoK: AI-Assisted Threat Intelligence Pipelines - A Taxonomy and Research Agenda for the Agentic Transition (SSRN, 2026 · DOI)
• Static Quality Assessment of Sigma Detection Rules: Framework and Empirical Evaluation (SSRN, 2026 · DOI)

• 20+ years in founding and principal engineering roles, building complex systems across security, infrastructure, and applied AI
• Hands-on across intrusion detection and prevention engines, AI-driven phishing defense, cloud-scale detection platforms, and runtime guardrails for LLM and agentic workflows
• Carnegie Mellon University, MS Information Technology, Information Security (2013) · MIT Professional Education, Applied Data Science (2023) · CISSP

Latest from cybertect.ai:

• Memory Safety in Agentic Systems Why Your Agents Memory is a Security Blind Spot
• Beyond Model Hardening: The Two-Layer Defense Your LLM Deployment Is Missing
• Your AI Agent Has No Guardrails. PCAS Changes That with a Compiler, Not a Prayer
• Your AI Has a Gut Feeling Problem
• The Agentic Displacement: A Multi-Trillion Dollar Revaluation

Also: 30 system design walkthroughs with Mermaid architecture diagrams.