Say Something Else: Rethinking Contextual Privacy as Information Sufficiency
LLM agents increasingly draft messages on behalf of users, yet users routinely overshare sensitive information and disagree on what counts as private. Existing systems support only suppression (omitting sensitive information) and generalization (replacing information with an abstraction), and are typically evaluated on single isolated messages, leaving both the strategy space and evaluation setting incomplete. We formalize privacy-preserving LLM communication as an \textbf{Information Sufficiency (IS)} task, introduce \textbf{free-text pseudonymization} as a third strategy that replaces sensitive attributes with functionally equivalent alternatives, and propose a \textbf{conversational ev...
| Authors | Yunze Xiao, Wenkai Li, Xiaoyuan Wu et al. |
|---|---|
| Primary category | cs.CR |
| Published | 7 April 2026 |
| Last updated at source | 7 April 2026 |
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