Our paper presented at EuroS&P 2018 is now available as a preprint at arXiv:
Takuya Watanabe, Eitaro Shioji, Mitsuaki Akiyama, Keito Sasaoka, Takeshi Yagi, Tatsuya Mori
“User Blocking Considered Harmful? An Attacker-controllable Side Channel to Identify Social Accounts,” arXiv:1805.05085 [cs.CR], May 2018.
https://arxiv.org/abs/1805.05085
A special website for this research project is under preparation. Please stay tuned.