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Fiverr Pro
English
$
USD
I will harden your ai chatbot system prompt against prompt injection
Alexander Hearn
About this gig
Can one clever message make your chatbot leak its instructions or go off-script?
I test your system prompt the way attackers do, then rewrite it to hold up. You send the prompt and the model it runs on. I run adversarial tests on that same model: prompt injection, role-play jailbreaks, instruction override, system prompt extraction and topic hijacking. Every test is logged pass or fail, so you see what broke and what the fix changed.
What you get:
- A hardened system prompt, ready to deploy
- A findings report: each attack, the result, the fix
- All test cases in a spreadsheet you can rerun
- Premium: a regression suite plus one retest after your changes
How I work: AI tools run the tests and draft the rewrite. I review and sign off on every delivery. Everything runs async through Fiverr messages, no calls needed.
No access to your app or servers is needed. Tests run on my own API account against the model you use.
No prompt is unbreakable. You get measurable improvement against known attack types, not a guarantee.
Get to know Alexander Hearn
Alexander Hearn
AI Security Specialist LLM Red Teaming and Prompt Injection Testing
- FromUnited States
- Member sinceDec 2020
Languages
English
I'm Alexander Hearn, a Cybersecurity Specialist at Handshake, where I red-team LLM systems. I earned a B.S. in Computer Science (Cybersecurity specialization) from the University of Maryland and hold a GISF certification.
I help teams find and fix security weaknesses in their AI products:
- System prompt hardening and prompt-injection testing
- RAG evaluation test sets
- Vendor security questionnaire completion
- Expert-reviewed AI agent and MCP security assessments
You get clear, prioritized findings so you know what to fix first and why. All work is AI-assisted, expert-reviewed delivery.
