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Yesterday โ€” February 13th 2026Security

I built a vulnerable AI banking CTFโ€”5 flags covering prompt injection techniques (write-up in comments)

By: ๏ผu๏ผSad_Professor_518

Full context: I built SecureBank AI Assistant, a deliberately vulnerable AI banking chatbot powered by Groq's Llama 3 70B.

5 exploitation techniques. 100% success rate against standard protections.

Flags cover:

  1. System prompt extraction

  2. Content filter bypass

  3. Function calling abuse

  4. Persistent backdoor injection

  5. RAG document poisoning

CTF challenge to practice: github.com/oussamaafnakkar/AccessDenied

Try it, break it, learn from it.

submitted by /u/Sad_Professor_518
[link] [comments]
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