Does Facebook use sensitive data for advertising purposes?

José González Cabañas, Ángel Cuevas, Aritz Arrate Galán, Rubén Cuevas. Does Facebook use sensitive data for advertising purposes?. Communications of the ACM, 64(1):62-69, 2021. [doi]

@article{CabanasCGC21,
  title = {Does Facebook use sensitive data for advertising purposes?},
  author = {José González Cabañas and Ángel Cuevas and Aritz Arrate Galán and Rubén Cuevas},
  year = {2021},
  doi = {10.1145/3426361},
  url = {https://doi.org/10.1145/3426361},
  researchr = {https://researchr.org/publication/CabanasCGC21},
  cites = {0},
  citedby = {0},
  journal = {Communications of the ACM},
  volume = {64},
  number = {1},
  pages = {62-69},
}