A canary injection protocol for linking observed AI agent behavior to the responsible account at the hosting vendor, with robust variants for adversarial filtering.
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29 Pith papers cite this work, alongside 16 external citations. Polarity classification is still indexing.
abstract
We study the problem of watermarking large language models (LLMs) generated text -- one of the most promising approaches for addressing the safety challenges of LLM usage. In this paper, we propose a rigorous theoretical framework to quantify the effectiveness and robustness of LLM watermarks. We propose a robust and high-quality watermark method, Unigram-Watermark, by extending an existing approach with a simplified fixed grouping strategy. We prove that our watermark method enjoys guaranteed generation quality, correctness in watermark detection, and is robust against text editing and paraphrasing. Experiments on three varying LLMs and two datasets verify that our Unigram-Watermark achieves superior detection accuracy and comparable generation quality in perplexity, thus promoting the responsible use of LLMs. Code is available at https://github.com/XuandongZhao/Unigram-Watermark.
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representative citing papers
SLAM achieves 100% detection on Gemma-2 models with only 1-2 point quality cost by causally steering SAE-identified residual-stream directions for linguistic structure.
AI agents can conduct undetectable covert conversations using a new pseudorandom noise-resilient key exchange that works without shared keys and with only constant min-entropy in messages.
RLCracker is a reinforcement learning attack that erases LLM watermarks at 98.5% success rate with minimal data and generalizes across ten schemes and multiple model sizes.
TRACE is a two-channel, distortion-free agent watermark whose selection and tally layers jointly resist deletion and rewriting by a log-holding reseller.
A power-calibrated statistical framework gives closed-form links from KGW watermark parameters (γ, δ) to detection power and KL distortion, enabling principled Pareto-optimal selection.
Signature filtering learns unreliable tokens with MILP and removes them at detection time, raising true positive rates from 8-31% to 78-99% across Kgw, Sweet, Unigram, and Exp watermarks on multiple corpora and LLMs while controlling false positives.
SWAN uses AMR to embed semantic watermarks that persist through paraphrases, matching SOTA detection on original text and improving AUC by 13.9 points on paraphrased RealNews data.
MEMSAD links anomaly detection gradients to retrieval objectives under encoder regularity to certify detection of continuous memory poisons, achieving perfect TPR/FPR in experiments while exposing a synonym-invariance gap.
R-CoT embeds watermarks into LLM reasoning paths via redundant CoT and GRPO-based dual optimization, maintaining over 95% true positive rate under fine-tuning and post-training changes.
The authors give constructions for provably undetectable watermarking of constant-entropy LLM outputs that are robust to random substitutions (under subexponential LPN) and to substitutions plus random deletions (under an additional heuristic or pseudorandom ECC).
RLSpoofer trains a 4B model on 100 watermarked paraphrase pairs to spoof PF watermarks at 62% success rate, far exceeding baselines trained on up to 10,000 samples.
Two new constructions for multi-bit generative watermarking attain the established lower bound on miss-detection probability under worst-case false-alarm constraints, fully characterizing optimal performance via linear programming.
CSF is the first black-box method to attribute fine-tuned text-to-image models to original lineages via compositional semantic probes and Bayesian decisions across multiple model families.
SAMark embeds a sentence-level watermark whose detection survives paragraph-level paraphrasing and reordering by anchoring each sentence's signal to its own semantic embedding.
SenFlow integrates graph-based inter-sentence propagation with linear-chain CRF decoding for sentence-level AI-generated text detection and reports SOTA results on the new MOSAIC benchmark of 16k hybrid documents.
A training-free audio watermarking method that reduces vocabulary via community detection to boost detection robustness by orders of magnitude while resisting audio modifications.
SIGIL introduces five canary strategies and a Neyman-Pearson-based Membership Inference Score that achieves AUC 0.831-0.947 in 36,000 simulations, remaining above 0.86 even after full paraphrasing.
Characterizes the exact capacity of multi-bit covert LLM watermarking via Gelfand-Pinsker and channel synthesis, then gives a polar-code algorithm achieving 0.375 bits/token at under 10% BER with negligible perplexity impact.
SIF creates semantically in-distribution fingerprints for LVLMs by distilling text watermarks into visual inputs and optimizing for robustness against detection and modification.
MATRIX embeds multi-layer watermarks in LLM-generated code via dual-channel constrained parity-check encoding, achieving 99.2% detection accuracy with 0-0.14% functionality loss and 7.7-26.67% better attack robustness than prior methods.
ISTS watermarking dynamically controls injection based on prompt semantics and uses two-sided detection to resist removal and forgery attacks in diffusion models.
A maximum likelihood model estimates 6.5-16.9% of peer-review text at ICLR 2024, NeurIPS 2023, CoRL 2023 and EMNLP 2023 was substantially modified by LLMs, with elevated rates in low-confidence and deadline-close submissions.
Recursive paraphrasing attacks substantially lower detection rates for multiple AI text detectors with only minor quality loss, while a theoretical analysis ties best-case AUROC to total variation distance between human and AI distributions.
citing papers explorer
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Who Owns This Agent? Tracing AI Agents Back to Their Owners
A canary injection protocol for linking observed AI agent behavior to the responsible account at the hosting vendor, with robust variants for adversarial filtering.
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SLAM: Structural Linguistic Activation Marking for Language Models
SLAM achieves 100% detection on Gemma-2 models with only 1-2 point quality cost by causally steering SAE-identified residual-stream directions for linguistic structure.
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Undetectable Conversations Between AI Agents via Pseudorandom Noise-Resilient Key Exchange
AI agents can conduct undetectable covert conversations using a new pseudorandom noise-resilient key exchange that works without shared keys and with only constant min-entropy in messages.
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RLCracker: Evaluating the Worst-Case Vulnerability of LLM Watermarks with Adaptive RL Attacks
RLCracker is a reinforcement learning attack that erases LLM watermarks at 98.5% success rate with minimal data and generalizes across ten schemes and multiple model sizes.
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TRACE: A Two-Channel Robust Attribution Watermark via Complementary Embeddings for LLM-Agent Trajectories
TRACE is a two-channel, distortion-free agent watermark whose selection and tally layers jointly resist deletion and rewriting by a log-holding reseller.
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Beyond Heuristic Tuning: Power-Calibrated LLM Watermarking
A power-calibrated statistical framework gives closed-form links from KGW watermark parameters (γ, δ) to detection power and KL distortion, enabling principled Pareto-optimal selection.
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Signature filtering: a lightweight enhancement for statistical watermark detection in large language models
Signature filtering learns unreliable tokens with MILP and removes them at detection time, raising true positive rates from 8-31% to 78-99% across Kgw, Sweet, Unigram, and Exp watermarks on multiple corpora and LLMs while controlling false positives.
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SWAN: Semantic Watermarking with Abstract Meaning Representation
SWAN uses AMR to embed semantic watermarks that persist through paraphrases, matching SOTA detection on original text and improving AUC by 13.9 points on paraphrased RealNews data.
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MEMSAD: Gradient-Coupled Anomaly Detection for Memory Poisoning in Retrieval-Augmented Agents
MEMSAD links anomaly detection gradients to retrieval objectives under encoder regularity to certify detection of continuous memory poisons, achieving perfect TPR/FPR in experiments while exposing a synonym-invariance gap.
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R-CoT: A Reasoning-Layer Watermark via Redundant Chain-of-Thought in Large Language Models
R-CoT embeds watermarks into LLM reasoning paths via redundant CoT and GRPO-based dual optimization, maintaining over 95% true positive rate under fine-tuning and post-training changes.
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Can we Watermark Low-Entropy LLM Outputs?
The authors give constructions for provably undetectable watermarking of constant-entropy LLM outputs that are robust to random substitutions (under subexponential LPN) and to substitutions plus random deletions (under an additional heuristic or pseudorandom ECC).
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RLSpoofer: A Lightweight Evaluator for LLM Watermark Spoofing Resilience
RLSpoofer trains a 4B model on 100 watermarked paraphrase pairs to spoof PF watermarks at 62% success rate, far exceeding baselines trained on up to 10,000 samples.
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Optimal Multi-bit Generative Watermarking Schemes Under Worst-Case False-Alarm Constraints
Two new constructions for multi-bit generative watermarking attain the established lower bound on miss-detection probability under worst-case false-alarm constraints, fully characterizing optimal performance via linear programming.
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CSF: Black-box Fingerprinting via Compositional Semantics for Text-to-Image Models
CSF is the first black-box method to attribute fine-tuned text-to-image models to original lineages via compositional semantic probes and Bayesian decisions across multiple model families.
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SAMark: A Self-Anchored Text Watermarking with Paragraph-Level Paraphrase Robustness
SAMark embeds a sentence-level watermark whose detection survives paragraph-level paraphrasing and reordering by anchoring each sentence's signal to its own semantic embedding.
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SenFlow: Inter-Sentence Flow Modeling for AI-Generated Text Detection in Hybrid Documents
SenFlow integrates graph-based inter-sentence propagation with linear-chain CRF decoding for sentence-level AI-generated text detection and reports SOTA results on the new MOSAIC benchmark of 16k hybrid documents.
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Hidden in Plain Tokens: Simply Robust, Gradient-Free Watermark for Synthetic Audio
A training-free audio watermarking method that reduces vocabulary via community detection to boost detection robustness by orders of magnitude while resisting audio modifications.
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Subtle Injection for Ground-truth Inference of LLM Training Data
SIGIL introduces five canary strategies and a Neyman-Pearson-based Membership Inference Score that achieves AUC 0.831-0.947 in 36,000 simulations, remaining above 0.86 even after full paraphrasing.
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Covert Multi-bit LLM Watermarking: An Information Theory and Coding Approach
Characterizes the exact capacity of multi-bit covert LLM watermarking via Gelfand-Pinsker and channel synthesis, then gives a polar-code algorithm achieving 0.375 bits/token at under 10% BER with negligible perplexity impact.
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SIF: Semantically In-Distribution Fingerprints for Large Vision-Language Models
SIF creates semantically in-distribution fingerprints for LVLMs by distilling text watermarks into visual inputs and optimizing for robustness against detection and modification.
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MATRIX: Multi-Layer Code Watermarking via Dual-Channel Constrained Parity-Check Encoding
MATRIX embeds multi-layer watermarks in LLM-generated code via dual-channel constrained parity-check encoding, achieving 99.2% detection accuracy with 0-0.14% functionality loss and 7.7-26.67% better attack robustness than prior methods.
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Towards Robust Content Watermarking Against Removal and Forgery Attacks
ISTS watermarking dynamically controls injection based on prompt semantics and uses two-sided detection to resist removal and forgery attacks in diffusion models.
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Monitoring AI-Modified Content at Scale: A Case Study on the Impact of ChatGPT on AI Conference Peer Reviews
A maximum likelihood model estimates 6.5-16.9% of peer-review text at ICLR 2024, NeurIPS 2023, CoRL 2023 and EMNLP 2023 was substantially modified by LLMs, with elevated rates in low-confidence and deadline-close submissions.
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Can AI-Generated Text be Reliably Detected?
Recursive paraphrasing attacks substantially lower detection rates for multiple AI text detectors with only minor quality loss, while a theoretical analysis ties best-case AUROC to total variation distance between human and AI distributions.
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An Exploratory Study on LLM-Generated Code and Comments in Code Repositories
Detector proxy analysis of real repositories finds LLM-like code decreasing over time and common in tests, with more in company repos, substantial clones, stable but often ungrammatical comments, and few linked bugs.
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PromptMark: A Prompt-Guided Iterative-Feedback Framework for Source Code Watermarking
PromptMark is a black-box prompt-guided iterative-feedback framework that embeds statistically detectable watermarks in LLM-generated source code via naming patterns while preserving functional correctness.
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Fundamental Trade-Offs in Multi-Bit Watermarking of Stochastic Processes
Derives matched converse and achievability bounds that characterize optimal trade-offs among false-alarm probability, detection error probability, distortion, and information rate for multi-bit watermarking of stationary ergodic stochastic processes.
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Position: LLM Watermarking Should Align Stakeholders' Incentives for Practical Adoption
LLM watermarking adoption is limited by misaligned stakeholder incentives; incentive-aligned approaches such as in-context watermarking can enable practical use in targeted domains like education and peer review.
- On Seeding Watermarks to Detect Verbatim LLM Copy-Paste Responses