Unique in the Smart Grid -The Privacy Cost of Fine-Grained Electrical Consumption Data - Inria - Institut national de recherche en sciences et technologies du numérique Access content directly
Preprints, Working Papers, ... (Preprint) Year : 2022

Unique in the Smart Grid -The Privacy Cost of Fine-Grained Electrical Consumption Data

Antonin Voyez
  • Function : Author
  • PersonId : 1069511
Tristan Allard
Gildas Avoine
  • Function : Author
Pierre Cauchois
  • Function : Author
Elisa Fromont

Abstract

The collection of electrical consumption time series through smart meters grows with ambitious nationwide smart grid programs. This data is both highly sensitive and highly valuable: strong laws about personal data protect it while laws about open data aim at making it public after a privacy-preserving data publishing process. In this work, we study the uniqueness of large scale real-life fine-grained electrical consumption time-series and show its link to privacy threats. Our results show a worryingly high uniqueness rate in such datasets. In particular, we show that knowing 5 consecutive electric measures allows to re-identify on average more than 90% of households in our 2.5M half-hourly electric time series dataset. Moreover, uniqueness remains high even when data is severely degraded. For example, when data is rounded to the nearest 100 watts, knowing 7 consecutive electric measures allows to re-identify on average more than 40% of the households (same dataset). We also study the relationship between uniqueness and entropy, uniqueness and electric consumption, and electric consumption and temperatures, showing their strong correlation.
Fichier principal
Vignette du fichier
main.pdf (783.45 Ko) Télécharger le fichier
biblio.bib (12.87 Ko) Télécharger le fichier
naturemag-doi.bst (35.31 Ko) Télécharger le fichier
Origin Files produced by the author(s)

Dates and versions

hal-03833605 , version 1 (09-11-2022)

Licence

Identifiers

Cite

Antonin Voyez, Tristan Allard, Gildas Avoine, Pierre Cauchois, Elisa Fromont, et al.. Unique in the Smart Grid -The Privacy Cost of Fine-Grained Electrical Consumption Data. 2022. ⟨hal-03833605⟩
67 View
51 Download

Altmetric

Share

Gmail Mastodon Facebook X LinkedIn More