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fevra-dev/README.md
fevra-dev



Portfolio  Email  ISC2 CC


I'm an agentic engineer. I build with coding agents, and the tooling they run.

Fifteen-plus open-source projects. Security tooling, offensive and defensive. Privacy tooling, regulatory and technical. Developer tooling that audits what coding agents write. Full-stack in TypeScript, React, and Next.js, with Python and FastAPI. Research on AI security and safety — whether frontier model monitors can detect payloads hidden in ordinary text.

I find the gaps in modern tooling, then write the code to close them.



Research & AI Security

Measurement-first work on what models and infrastructure disclose.

Project Description Stack
Credence Exposure intelligence for the AI-infrastructure layer · live credential verification across 16 providers, MCP/agent posture scoring, git-metadata secrets, exploitability-ranked SCA, CycloneDX AI-BOM, OWASP LLM + MITRE ATLAS tagging, SARIF dedup Python
covert-semantic Black-box detectability of LLM semantic steganography, mapped along two axes — what a monitor knows, and what form the payload arrives in. n=150 cross-model monitor panel, distributional stego-detector, and the image-modality vision-analytic gap (an informed monitor goes soft when the payload is rendered as an image, even with perfect OCR). Reproducible: offline test suite + cached-judgment receipts + pre-registered verdicts. Python

Offensive Security

Tools for authorized penetration testing, vulnerability research, and red team operations.

Tool Description Stack
Stiletto SQL injection scanner with CVE sync from 23k+ Trickest repo, AI-generated payloads, and WAF bypass engine Python
ClaimJumper JWT toolkit · 15 vulnerability checks, algorithm confusion (CVE-2022-39227), kid injection, null signature bypass, 100k wordlist crack Python
Dockyard Async port scanner · 1000+ ports/sec, 17 protocol probes, 500+ CVE signatures, QUIC detection, LLM-hardened summary Python
Specter Subdomain takeover scanner across 40+ cloud providers with behavioral anomaly detection and YAML-based detection rules Python
Restless REST and GraphQL API scanner covering OWASP API Top 10 · SSRF, BOLA, auth bypass, rate limit evasion, CVE-sourced payloads Python
Argus Default credential scanner across SSH, HTTP, FTP, Telnet, Redis, MongoDB, MySQL, and SNMP with CVE enrichment and CISA KEV integration Python

Detection & Defense

Tools for threat detection, DFIR, and defensive monitoring.

Tool Description Stack
Lure Browser phishing defense platform · 49 detectors across 25 implementation waves, AiTM proxy detection, deepfake track injection, and email analysis CLI JS / Python
Vigil Browser-native Windows event log DFIR · 31 Sigma rules, Shannon entropy scoring, ScriptBlock reassembly, process lineage, and ATT&CK technique heatmap React
Shrike PCAP forensics via behavioral analysis · C2 beaconing, DNS tunneling, NTLM relay, OT/ICS attacks, WebSocket C2, DGA scoring, and 26-tab HTML report Python
Corsair HTTP security header scanner · 60+ checks, CVE correlation, 1200+ fingerprinting signatures, SARIF output for GitHub Code Scanning Python
ShadowHunter Dark web threat intelligence platform · credential monitoring, ransomware leak tracking, IAB marketplace intelligence, stealer log analysis Python
Prizm Browser client-side secret scanner · 157 patterns across 7 storage types plus WebSocket traffic, ML classification, and live API verification Chrome MV3

Privacy Engineering

Statutory analysis on one end, defences that run in the browser on the other.

Tool Description Stack
Subrosa Privacy-engineering suite · nine Claude Code skills over a citation-backed taxonomy of 29 jurisdictional and sectoral records, bridged by a statutory dissolution map. Compliance is a floor; selective disclosure is the ceiling Rust
Kala Behavioral fingerprinting protection · randomizes typing cadence, mouse dynamics, and touch patterns to defeat analytics-layer deanonymization TypeScript

Blockchain & Web3 Security

Cryptographic tooling for the Solana ecosystem — air-gapped key custody and cross-chain asset migration.

Tool Description Stack
Kyma Sound as a hardware security module for Solana · cold signing and seed recovery over audio, ggwave FSK modulation, LSB music steganography, AES-256-GCM, Android Keystore Kotlin
Kiln Teleburn protocol for permanently migrating Solana NFTs to Bitcoin Ordinals · atomic burn-plus-memo, on-chain cryptographic proof, public verification TypeScript

Applications & Developer Tooling

Product work, front-end engineering, and tooling for coding agents.

Project Description Stack
Hogwash Claude Skills suite for stripping AI defaults from writing, code, and design · two-pass manual audit rather than find-and-replace, evidence-tiered from 20+ sources and weighted so structural patterns outrank vocabulary Python
North-Bay Accessible bilingual municipal site redesign · task-oriented IA over the org chart, focus-trapped dialogs, real document-level language switching, persistent theme. Unofficial concept, not affiliated with the City TypeScript
Joule Web-first Flutter SaaS for electricians · quotes, PDFs, job templates, invoices, and contract workflows with a minimal, product-first UI Dart / Flutter
First-Peasant-View First-person-view plugin for Old School RuneScape (RuneLite) Java

Python  TypeScript  JavaScript  Rust  Kotlin  Dart  Java  React

MITRE ATT&CK  Sigma  SARIF  STIX 2.1  CycloneDX


All security tools are for authorized testing only. See individual repositories for legal notices.

Pinned Loading

  1. Subrosa Subrosa Public

    Privacy engineering suite — nine Claude Code skills plus a citation-backed regulatory taxonomy of 29 jurisdictional and sectoral records, bridged by a statutory dissolution map. Compliance is a flo…

    Rust

  2. Credence Credence Public

    Exposure intelligence for the AI-infrastructure layer — finds and weighs leaked credentials, MCP/agent configs, git-metadata secrets, and supply-chain risk, and tells you which exposures to trust. …

    Python 4

  3. Shrike Shrike Public

    Python network forensics tool that detects C2 beaconing, port scans, data exfiltration, DNS tunneling, and 20+ threat patterns in PCAP files. Behavioral analysis for the encrypted traffic era. Ever…

    Python 4 1

  4. Stiletto Stiletto Public

    🗡️ SQL injection scanner with CVE threat intelligence sync, AI-powered payloads, JSON-based WAF bypass, and async scanning. Auto-updates with real-world exploits from 500+ CVEs.

    Python 2

  5. Vigil Vigil Public

    Client-side Windows event log forensics — Sigma rule matching, PowerShell decode, ransomware chain correlation, credential access detection, and process lineage reconstruction. No backend required.

    JavaScript 1

  6. covert-semantic covert-semantic Public

    Black-box detectability of LLM semantic steganography, mapped along two axes: what the monitor knows, and what form the payload arrives in.

    Python