Author

Muhaimin Bin Munir

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Preprint Oct 2026

Persona Guardrail: A Production-Grade Defense Framework for Agentic Systems

Large language model-based agents are increasingly deployed to perform domain-specific tasks by interacting with enterprise knowledge, tools, and external services. Existing runtime guardrails primarily target prompt injection and other attack-specific behaviors under a black-box threat model, but provide limited guara...

Bijeeta Pal, Sridhar Reddy Maddireddy, Muhaimin Bin Munir et al. · 0 citations

#natural language process... Preprint Aug 2026

TRIS: A Tri-Layer Retrieval Integrity Sieve Against Knowledge Poisoning

The Tri-Layer Sieve is presented, a middleware defense that sanitizes retrieved evidence through cross-embedding-space clustering with an independent judge model, structural filtering of trigger-payload artifacts, and LLM consistency verification, and exploits a key weakness of retrieval-stage poisoning.

Muhaimin Bin Munir, Akib Jawad Ononto, Nazia Shehnaz Joynab et al. · 0 citations