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Dennis Sepede

Defense is built by those who know how to attack.

I think like an attacker, I build like an engineer.

Portfolio  LinkedIn  Securitix Solutions


A researcher before a manager. Co-Founder & CTO of Securitix Solutions, CTO of Vulneralt, and the sole Cybersecurity Operations & Engineering lead for an industrial group. Trained in the US on critical infrastructure. I find the flaws, write the exploits, then build from scratch the defense that holds them.

Security research

3 Critical CVEs  ·  10 published advisories  ·  4 pending at MITRE  ·  40+ targets

Manual source-code review and coordinated disclosure, with a growing focus on AI/LLM security.

CVE Target Class Severity
CVE-2026-38595 im3x/Scriptables OS Command Injection Critical 9.8
CVE-2026-38600 gohttpserver Zip Slip → RCE Critical 9.1
CVE-2026-38601 gohttpserver Hardcoded session secret Critical 9.1

Plus "6 libraries, one leak" - the same cross-origin auth-header leak found across undici, node-fetch, follow-redirects, gorequest, req and go-resty. → Full archive: security-research

Built, not bought

Proprietary platforms I designed end-to-end and run in production. Code is closed source - case studies on my site.

  • Presidio - multi-tenant XDR/MDR SOC platform
  • Valta - AI-powered Cyber Threat Intelligence
  • Mirage - deception network with intelligent honeypots
  • Argus - AIOps dashboard for SMB / MSP
  • Forge - security awareness & training LMS
  • and more: Sign, Cipher, Tempest, PhishSim

Open source

Project What it is
security-research CVEs & responsible disclosures
PasswordFilterDLL Active Directory LSA password filter - offline HIBP via Bloom filter, GPO-ready
burp-mcp Burp Suite MCP server - 61 tools to drive Burp from an AI agent
Wordlist-Forger Customizable wordlist generator for pentesters
USBBlocker Block USB mass storage on Windows - endpoint hardening
glublm A 36M-param browser language model + pixel-art desk pet

Arsenal

  • Offensive  ·  Web / Mobile / AI pentest, Red Teaming, Malware Analysis, Vulnerability Research
  • Defensive  ·  XDR/EDR, SIEM, SOAR, Zero Trust, Hardening, M365 / AD
  • Governance  ·  ISO 27001, NIS2, GDPR, Risk Management, Threat Intelligence
  • Engineering  ·  Python, Go, TypeScript, Docker, Proxmox, AWS, Next.js

CompTIA Security+ · Cisco CCNA · AWS Cloud Practitioner · A.A.S. Cyber Security (High Honors) · NCL Top 6% · Anthropic Cyber Verification Program

Connect

dennis.d-enterprise.cc  ·  LinkedIn  ·  securitixsolutions.com  ·  dennis@securitixsolutions.com

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