How Well Can LLM Agents Simulate End-User Security and Privacy Attitudes and Behaviors?

Fuente: arXiv
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Hauptverfasser: Li, Yuxuan, Li, Leyang, Lee, Hao-Ping, Das, Sauvik
Format: Preprint
Veröffentlicht: 2026
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author Li, Yuxuan
Li, Leyang
Lee, Hao-Ping
Das, Sauvik
author_facet Li, Yuxuan
Li, Leyang
Lee, Hao-Ping
Das, Sauvik
contents A growing body of research assumes that large language model (LLM) agents can serve as proxies for how people form attitudes toward and behave in response to security and privacy (S&P) threats. If correct, these simulations could offer a scalable way to forecast S&P risks in products prior to deployment. We interrogate this assumption using SP-ABCBench, a new benchmark of 30 tests derived from validated S&P human-subject studies, which measures alignment between simulations and human-subjects studies on a 0-100 ascending scale, where higher scores indicate better alignment across three dimensions: Attitude, Behavior, and Coherence. Evaluating twelve LLMs, four persona construction strategies, and two prompting methods, we found that there remains substantial room for improvement: all models score between 50 and 64 on average. Newer, bigger, and smarter models do not reliably do better and sometimes do worse. Some simulation configurations, however, do yield high alignment: e.g., with scores above 95 for some behavior tests when agents are prompted to apply bounded rationality and weigh privacy costs against perceived benefits. We release SP-ABCBench to enable reproducible evaluation as methods improve.
format Preprint
id arxiv_https___arxiv_org_abs_2602_18464
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle How Well Can LLM Agents Simulate End-User Security and Privacy Attitudes and Behaviors?
Li, Yuxuan
Li, Leyang
Lee, Hao-Ping
Das, Sauvik
Computers and Society
Artificial Intelligence
Computation and Language
Cryptography and Security
A growing body of research assumes that large language model (LLM) agents can serve as proxies for how people form attitudes toward and behave in response to security and privacy (S&P) threats. If correct, these simulations could offer a scalable way to forecast S&P risks in products prior to deployment. We interrogate this assumption using SP-ABCBench, a new benchmark of 30 tests derived from validated S&P human-subject studies, which measures alignment between simulations and human-subjects studies on a 0-100 ascending scale, where higher scores indicate better alignment across three dimensions: Attitude, Behavior, and Coherence. Evaluating twelve LLMs, four persona construction strategies, and two prompting methods, we found that there remains substantial room for improvement: all models score between 50 and 64 on average. Newer, bigger, and smarter models do not reliably do better and sometimes do worse. Some simulation configurations, however, do yield high alignment: e.g., with scores above 95 for some behavior tests when agents are prompted to apply bounded rationality and weigh privacy costs against perceived benefits. We release SP-ABCBench to enable reproducible evaluation as methods improve.
title How Well Can LLM Agents Simulate End-User Security and Privacy Attitudes and Behaviors?
topic Computers and Society
Artificial Intelligence
Computation and Language
Cryptography and Security
url https://arxiv.org/abs/2602.18464