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~ similar to 2606.00930· 20 results

cs.LGcs.CLRecentMay 30, 2026

Task Structure Reverses Layerwise State Encoding in Sequence Models

Yuhang Jiang

The paper demonstrates that the location and nature of state encoding in sequence models are not fixed architectural traits but are highly dependent on the specific task, showing that the encoding pro…

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cs.LGcs.AIcs.CRRecentMay 3, 2026

Probe-Geometry Alignment: Erasing the Cross-Sequence Memorization Signature Below Chance

Anamika Paul Rupa, Anietie Andy

The paper introduces Probe-Geometry Alignment (PGA), a surgical method that removes the measurable cross-sequence memorization signature from large language models without degrading their general capa…

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cs.CLcs.CRRecentApr 16, 2026

Segment-Level Coherence for Robust Harmful Intent Probing in LLMs

Xuanli He, Bilgehan Sel, Faizan Ali, Jenny Bao +2 more

The paper introduces a robust streaming probing objective that requires multiple evidence tokens to support a prediction, significantly improving the detection of harmful intent in LLMs, especially in…

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cs.CLcs.AIcs.LGRecentMay 27, 2026

Pressure-Testing Deception Probes in LLMs: Scaling, Robustness, and the Geometry of Deceptive Representations

Sachin Kumar

This paper systematically diagnoses the failure modes of linear deception probes in LLMs, finding that while single-direction probes are insufficient, multi-dimensional probes can recover robust detec…

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cs.CLRecentJun 1, 2026

DECK: A Consistency x Confidence Taxonomy of LLM Hallucinations

Mohit Singh Chauhan

The paper introduces the DECK taxonomy, a novel framework that classifies LLM hallucinations not by their content error, but by their detectability signature based on inter-sample consistency and toke…

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cs.CRcs.LGRecentMay 28, 2026

Dissecting the Black Box: Circuit-Level Analysis of LLM Vulnerability Detection

Syafiq Al Atiiq, Chun Zhou, Christian Gehrmann

The paper analyzes LLM vulnerability detection using mechanistic interpretability, finding that models primarily rely on safety detectors rather than direct vulnerability signature recognition.

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cs.LGcs.CRRecentApr 21, 2026

Mechanistic Anomaly Detection via Functional Attribution

Hugo Lyons Keenan, Christopher Leckie, Sarah Erfani

The paper proposes reframing mechanistic anomaly detection (MAD) as a functional attribution problem, using influence functions to measure how much a model's output depends on specific input samples,…

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cs.CRcs.CLRecentApr 28, 2026

The Surprising Universality of LLM Outputs: A Real-Time Verification Primitive

Alex Bogdan, Adrian de Valois-Franklin

The paper identifies a universal, statistically predictable distribution (Mandelbrot) governing LLM outputs, enabling a highly efficient, model-agnostic scoring primitive for provenance and quality as…

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cs.CRcs.AIcs.LGRecentMay 17, 2026

Fast and Lightweight Backdoor Detection via Head Random Probing

Yinbo Yu, Xueyu Yin, Jing Fang, Chunwei Tian +3 more

The paper proposes HTell, a fast and lightweight data-free backdoor detector that analyzes the abnormal response concentration of backdoored models on the target class using random latent probes appli…

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cs.LGcs.AIRecentJun 1, 2026

When Do Attention Circuits Form? Developmental Trajectories of Capability and Attention-Sink Emergence Across Three 1B-ClassArchitectures

Yongzhong Xu

The paper tracks the developmental emergence of attention circuits in 1B-class language models, finding that the formation of induction and attention-sink circuits are distinct, temporally separated t…

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cs.CRcs.AIRecentMay 17, 2026

Lightweight and Fast Backdoor Model Detection

Yinbo Yu, Jing Fang, Xuewen Zhang, Chunwei Tian +3 more

The paper proposes DFBScanner, a lightweight static parameter inspection framework that detects backdoor attacks by analyzing anomalous parameter updates in the final classification layer, achieving f…

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cs.LGcs.CLRecentMay 28, 2026

MAAT: Multi-phase Adapter-Aware Targeted Unlearning

Suryash Yagnik, Shubham Gaur, Saksham Thakur, Vinija Jain +2 more

The paper introduces 5WBENCH, a new benchmark for causal unlearning, and proposes MAAT, a novel three-phase framework that achieves high forgetting and high retention specifically on complex 'Why'-typ…

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cs.CRcs.AIRecentJun 3, 2026

From Attack Simulation to SIEM Rule: Deterministic Detection-as-Code Synthesis with Probe-Level Traceability

Alexandre Cristovão Maiorano

The paper introduces a deterministic method to automatically synthesize initial SIEM detection rules (Sigma rules) from attack simulation findings, ensuring full traceability back to the specific orig…

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cs.AIcs.CRRecentMay 27, 2026

Refusal Before Decoding: Detecting and Exploiting Refusal Signals in Intermediate LLM Activations

Matteo Gioele Collu, Riccardo Conte, Alberto Giaretta, Denis Kleyko +3 more

The paper demonstrates that refusal behavior in Large Language Models (LLMs) is encoded as an actionable, linearly decodable signal in intermediate transformer activations, allowing for early detectio…

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cs.AIcs.CRRecentMay 27, 2026

Refusal Before Decoding: Detecting and Exploiting Refusal Signals in Intermediate LLM Activations

Matteo Gioele Collu, Riccardo Conte, Alberto Giaretta, Denis Kleyko +3 more

The paper demonstrates that refusal behavior in Large Language Models (LLMs) is encoded as an actionable, linearly decodable signal in intermediate transformer activations, allowing for early detectio…

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cs.CRq-fin.TRRecentMar 27, 2026

PEB Separation and State Migration: Unmasking the New Frontiers of DeFi AML Evasion

Yixin Cao, Xianfeng Cheng, Yijie Liu

The paper demonstrates that current transfer-based AML systems fail in complex DeFi environments because economic value migration can be structurally decoupled from explicit token transfers.

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cs.CRcs.AIcs.CLRecentMay 28, 2026

Token-Level Generalization in LoRA Adapter Backdoors: Attack Characterization and Behavioral Detection

Travis Lelle

The paper demonstrates that LoRA adapters can be backdoored via data poisoning, showing the backdoor generalizes at the token feature level, and proposes robust behavioral and weight-level detectors f…

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cs.CRcs.AIcs.CLRecentMay 28, 2026

Token-Level Generalization in LoRA Adapter Backdoors: Attack Characterization and Behavioral Detection

Travis Lelle

This paper demonstrates that LoRA adapters can be backdoored via data poisoning, showing that the resulting backdoor generalizes at the token feature level, and proposes robust behavioral and weight-l…

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cs.CRcs.LGRecentMay 28, 2026

Fingerprinting Inference Systems of Large Language Models

Anna Wimbauer, Jonas Möller, Erik Imgrund, Konrad Rieck

This paper introduces a fingerprinting method that exploits subtle numerical deviations in the inference system components (like the engine or hardware) to reliably identify the specific components us…

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cs.CRcs.AIRecentMay 14, 2026

MemLineage: Lineage-Guided Enforcement for LLM Agent Memory

Ciyan Ouyang, Rui Hou

MemLineage introduces a novel, cryptographically-backed defense mechanism that enforces a chain-of-custody for LLM agent memory, preventing untrusted or poisoned state from justifying sensitive action…

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