Setting $\varepsilon$ is not the Issue in Differential Privacy

Fuente: arXiv
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Main Author: Cyffers, Edwige
Format: Preprint
Published: 2025
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author Cyffers, Edwige
author_facet Cyffers, Edwige
contents This position paper argues that setting the privacy budget in differential privacy should not be viewed as an important limitation of differential privacy compared to alternative methods for privacy-preserving machine learning. The so-called problem of interpreting the privacy budget is often presented as a major hindrance to the wider adoption of differential privacy in real-world deployments and is sometimes used to promote alternative mitigation techniques for data protection. We believe this misleads decision-makers into choosing unsafe methods. We argue that the difficulty in interpreting privacy budgets does not stem from the definition of differential privacy itself, but from the intrinsic difficulty of estimating privacy risks in context, a challenge that any rigorous method for privacy risk assessment face. Moreover, we claim that any sound method for estimating privacy risks should, given the current state of research, be expressible within the differential privacy framework or justify why it cannot.
format Preprint
id arxiv_https___arxiv_org_abs_2511_06305
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Setting $\varepsilon$ is not the Issue in Differential Privacy
Cyffers, Edwige
Cryptography and Security
Machine Learning
This position paper argues that setting the privacy budget in differential privacy should not be viewed as an important limitation of differential privacy compared to alternative methods for privacy-preserving machine learning. The so-called problem of interpreting the privacy budget is often presented as a major hindrance to the wider adoption of differential privacy in real-world deployments and is sometimes used to promote alternative mitigation techniques for data protection. We believe this misleads decision-makers into choosing unsafe methods. We argue that the difficulty in interpreting privacy budgets does not stem from the definition of differential privacy itself, but from the intrinsic difficulty of estimating privacy risks in context, a challenge that any rigorous method for privacy risk assessment face. Moreover, we claim that any sound method for estimating privacy risks should, given the current state of research, be expressible within the differential privacy framework or justify why it cannot.
title Setting $\varepsilon$ is not the Issue in Differential Privacy
topic Cryptography and Security
Machine Learning
url https://arxiv.org/abs/2511.06305