Skip to content
View jeffreyesdavid's full-sized avatar
🌴
On vacation
🌴
On vacation

Block or report jeffreyesdavid

Block user

Prevent this user from interacting with your repositories and sending you notifications. Learn more about blocking users.

You must be logged in to block users.

Content in all repositories owned by your account will be closed.
Maximum 250 characters. Please don’t include any personal information such as legal names or email addresses. This note will only be visible to you.
Report abuse

Contact GitHub support about this user’s behavior. Learn more about reporting abuse.

Report abuse
jeffreyesdavid/README.md

Hello, I'm Jeffrey

Fraud & Security Analyst in the making. I build open-source tools that stop scams, theft and data exposure before they happen.

A decade in digital marketing and e-commerce gave me an insider's view of how fraud actually works: fake storefronts, social engineering, phishing and paid-ad abuse. Now I build the defenses.

Open to: fraud, SOC and security analyst roles · Remote or Southern California · Relocating to New York in 2027

7 security tools shipped · 110+ automated tests · real-world phishing takedown reported · incident response write-ups

Projects

Following my progress? Every lab, write-up and lesson is logged in cybersecurity-journey →

Project What it does
aegis-guardian 🆕 A free, bilingual (English/Spanish) anti-scam agent: paste a suspicious text or screenshot and it explains the red flags and what to do next. Consent-first by design, so it can never become the surveillance tool it guards against. Bilingual scam checker live in the browser; AI layer powered by Meta's Muse Spark. Try it →
ai-guardian Discovers the AI agents on a machine (apps, coding agents, browser extensions, MCP plugins) and flags what they can reach: plain-text API keys, SSH keys, disabled permission prompts. Enterprise-style "shadow AI" visibility, free and local. Project page →
php-guardian Inventories every PHP install and flags versions exposed to php2shell, the critical flaw CISA warned about in Oct 2026. Shipped within a day of the alert; caught a real unpatched server in testing. JSON output for SIEMs. Project page →
wifi-guardian Spots fake Wi-Fi before you join it: evil twins, look-alike network names, "FREE WiFi" bait and router swaps (ARP spoofing). Built for small businesses and guest networks without enterprise budgets. See the demo →
vpn-guardian Verifies every 30 seconds that a VPN is actually protecting you, alerting laptop and phone the moment it drops or leaks your real IP, with a local AI that explains each alert in plain English. Project page →
beat-guard Fingerprints producers' beats, timestamps them on Bitcoin and detects them inside other songs, even beneath vocals or sped up. Generates an evidence report. Project page →
tx-guard Checks crypto transactions before you sign: matches 2,500+ known scam addresses, catches wallet-draining approvals and simulates the transaction to show exactly what you'd lose. Try it live →

Write-ups

Skills

Security: threat detection · incident response · fraud & scam analysis · threat modeling · secret scanning · network & wireless security · AI / LLM security Build: Python · Bash · Swift · Git · local AI (Ollama) · Ethereum · OSINT

Currently

  • Building Aegis Guardian, a bilingual AI scam shield powered by Meta's Muse Spark
  • Shipping the Guardian series hands-on: open-source security tools, each tested and documented
  • Logging the work in my cybersecurity journey

Find me

Resume · LinkedIn · SoundCloud

Pinned Loading

  1. aegis-guardian aegis-guardian Public

    Consent-first personal safety & anti-scam agent — built so it can’t become the surveillance tool it prevents. Part of the Guardian security portfolio.

    Python

  2. ai-guardian ai-guardian Public

    Find the AI agents on your machine and see what they can touch. Free, local, open-source shadow AI scanner.

    Python

  3. wifi-guardian wifi-guardian Public

    Spots fake (evil twin) and look-alike Wi-Fi networks before you join them. Free, local, macOS.

    Python

  4. purple-star-chart purple-star-chart Public

    Zi Wei Dou Shu (Purple Star Astrology) in English — inspired by Renhuai123/ziwei-doushu

    HTML

  5. php-guardian php-guardian Public

    Free scanner for php2shell (CVE-2026-109618/109619): finds PHP installs and flags vulnerable versions, per CISA's alert.

    Shell

  6. vpn-guardian vpn-guardian Public

    Free personal security agent that catches VPN drops and leaks and alerts your Mac and phone.

    Shell