Freelancers using Hugging Face in Nairobi
Freelancers using Hugging Face in Nairobi
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Stephen Kisong'e
Nairobi, Kenya
Cyber Security Analyst
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Cyber Security Analyst
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AI-Assisted CTF Solving and Bug Bounty Hunting I integrated Cyber-Ornith Obliterated, an uncensored cybersecurity model running locally in LM Studio, with HexStrike AI through MCP to execute tools on Kali Linux. I demonstrated the setup by solving Root-Me’s HTML source-code CTF challenge. The model retrieved the page, inspected its HTML and identified a password exposed in a comment. I verified the command output and submitted the answer, successfully completing the challenge. Beyond CTFs, I built this project to support AI-assisted bug bounty hunting, including web response analysis and vulnerability investigation within authorized scope, with human oversight and verification of findings.
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Adversarial Data Poisoning Attack on a Network Intrusion AI Mod…
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Performed a manual, black-box security assessment of a locally-hosted large language model served through LM Studio, using Burp Suite as the primary testing tool. The engagement began with no prior knowledge beyond a single IP address, mirroring how an external attacker would approach an exposed AI server discovered on a network. Worked through a full discovery-first methodology: confirming the target was live, enumerating the server's exposed endpoints by probing and reading response codes, extracting the loaded model name directly from the API, and proving the expected request format through the server's own error responses rather than assuming it. This reconnaissance phase converted an unknown target into a complete map of its attack surface. With the attack surface established, executed a series of manual techniques through Burp's Repeater and Intruder tools, including prompt injection, system prompt extraction, role and system-message injection, parameter manipulation, error-message disclosure, and authentication testing. Demonstrated additional Burp capabilities relevant to AI systems, including response comparison to prove behavioral changes under attack, randomness testing of server-generated identifiers, and live request tampering to illustrate a man-in-the-middle scenario against AI traffic. Organized all findings into a structured vulnerability map aligned to OWASP LLM risk categories, recording each technique's result, severity, and supporting evidence. Delivered the work as a complete, reproducible, beginner-accessible walkthrough covering environment setup, discovery, exploitation, and reporting.
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Conducted an automated security assessment of a locally-hosted large language model, Dolphin 3.0 (Llama 3.1 8B), using Garak, NVIDIA's open-source LLM vulnerability scanner. The model was served through LM Studio's OpenAI-compatible REST API and tested from a Parrot OS environment running in VirtualBox. Configured Garak to target the model via a custom REST generator configuration, handling endpoint routing, Bearer token authentication, JSON response parsing, and extended timeouts for local inference. Executed nine distinct probe categories against the model, covering DAN jailbreaks, prompt injection, encoding-based bypass, malware generation, latent injection, real toxicity prompts, continuation attacks, grandma exploits, and package hallucination. The assessment identified that Dolphin 3.0, an uncensored model with no built-in safety guardrails, was vulnerable across the majority of probe categories. Findings were documented per probe, distinguishing where the model resisted versus complied, and translated into a clear, layered explanation of each attack type and its real-world security implications. Delivered the work as a complete, reproducible walkthrough, including environment setup, tool configuration, probe execution, and results interpretation, suitable for both technical practitioners and stakeholders newer to AI security.
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Hugging Face
(5)
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Emmanuel Kiriinya
Nairobi, Kenya
Full-Stack Solutions & AI Integrations Expert
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Full-Stack Solutions & AI Integrations Expert
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AI-Powered Travel Recommendation App
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8
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Cross-Border Money Transfer & Payment App
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11
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Multi-tenant E-commerce Order Management Platform
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12
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Hugging Face
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