Research

Research seriesL2offensive security

Indirect Prompt Injection via Retrieved Content

A threat-lab breakdown of how untrusted retrieved content hijacks an agent: the attack tree from poisoned source to tool call to exfiltration, each node paired with its concrete hardening - grounded in OWASP LLM Top 10, MITRE ATLAS, and NIST.

Murali Chillakuru·3 articles
  1. 1
    Indirect Prompt Injection: Attack Tree & Hardening

    How untrusted retrieved content hijacks an agent — the exploit chain from poisoned source to tool abuse, each step paired with its defense.

  2. 2
    RAG Poisoning Primitives

    How an attacker writes into a retrieval corpus, wins the ranker, and persists — the ingestion-to-answer primitives, each paired with a control.

  3. 3
    Tool Abuse & the Confused Deputy

    Once an agent is fooled, it acts with its own authority — the tool-abuse chain from injected instruction to real action, each step paired with a control.