It's a TRAP! Task-Redirecting Agent Persuasion Benchmark for Web Agents

Fuente: arXiv
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Main Authors: Korgul, Karolina, Yang, Yushi, Drohomirecki, Arkadiusz, Błaszczyk, Piotr, Howard, Will, Aichberger, Lukas, Russell, Chris, Torr, Philip H. S., Mahdi, Adam, Bibi, Adel
Format: Preprint
Published: 2025
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author Korgul, Karolina
Yang, Yushi
Drohomirecki, Arkadiusz
Błaszczyk, Piotr
Howard, Will
Aichberger, Lukas
Russell, Chris
Torr, Philip H. S.
Mahdi, Adam
Bibi, Adel
author_facet Korgul, Karolina
Yang, Yushi
Drohomirecki, Arkadiusz
Błaszczyk, Piotr
Howard, Will
Aichberger, Lukas
Russell, Chris
Torr, Philip H. S.
Mahdi, Adam
Bibi, Adel
contents Web-based agents powered by large language models are increasingly used for tasks such as email management or professional networking. Their reliance on dynamic web content, however, makes them vulnerable to prompt injection attacks: adversarial instructions hidden in interface elements that persuade the agent to divert from its original task. We introduce the Task-Redirecting Agent Persuasion Benchmark (TRAP), an evaluation for studying how persuasion techniques misguide autonomous web agents on realistic tasks. Across six frontier models, agents are susceptible to prompt injection in 25\% of tasks on average (13\% for GPT-5 to 43\% for DeepSeek-R1), with small interface or contextual changes often doubling success rates and revealing systemic, psychologically driven vulnerabilities in web-based agents. We also provide a modular social-engineering injection framework with controlled experiments on high-fidelity website clones, allowing for further benchmark expansion.
format Preprint
id arxiv_https___arxiv_org_abs_2512_23128
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle It's a TRAP! Task-Redirecting Agent Persuasion Benchmark for Web Agents
Korgul, Karolina
Yang, Yushi
Drohomirecki, Arkadiusz
Błaszczyk, Piotr
Howard, Will
Aichberger, Lukas
Russell, Chris
Torr, Philip H. S.
Mahdi, Adam
Bibi, Adel
Human-Computer Interaction
Artificial Intelligence
Multiagent Systems
Web-based agents powered by large language models are increasingly used for tasks such as email management or professional networking. Their reliance on dynamic web content, however, makes them vulnerable to prompt injection attacks: adversarial instructions hidden in interface elements that persuade the agent to divert from its original task. We introduce the Task-Redirecting Agent Persuasion Benchmark (TRAP), an evaluation for studying how persuasion techniques misguide autonomous web agents on realistic tasks. Across six frontier models, agents are susceptible to prompt injection in 25\% of tasks on average (13\% for GPT-5 to 43\% for DeepSeek-R1), with small interface or contextual changes often doubling success rates and revealing systemic, psychologically driven vulnerabilities in web-based agents. We also provide a modular social-engineering injection framework with controlled experiments on high-fidelity website clones, allowing for further benchmark expansion.
title It's a TRAP! Task-Redirecting Agent Persuasion Benchmark for Web Agents
topic Human-Computer Interaction
Artificial Intelligence
Multiagent Systems
url https://arxiv.org/abs/2512.23128