@inproceedings{usenixsec2016retargetedads,
    title = {Tracing Information Flows Between Ad Exchanges Using Retargeted Ads},
    authors = {Muhammad Ahmad Bashir and Sajjad Arshad and William Robertson and Christo Wilson},
    booktitle = {{USENIX} Security Symposium},
    month = {8},
    year = {2016},
    location = {Austin, TX, USA}
}