text: 48,9,979761588927324160,40737859,Aleksandra Korolova,"New paper on microtargeting, private info inference, and precise geo-targeting attacks feasible using Facebook’s advertising system: <LINK>. @faizulla_boy & I discuss Facebook’s responses to disclosures (2 months!) & call for radical transparency & more research. I first identified and pointed out to Facebook the privacy risks of microtargeting using Facebook's ad platform in 2010: <LINK>. 7+ years later, it’s still an issue with no scientific innovation on protections from Facebook: <LINK>",https://arxiv.org/abs/1803.10099,"Ad targeting is getting more powerful with introduction of new tools, such as Custom Audiences, behavioral targeting, and Audience Insights. Although this is beneficial for businesses as it enables people to receive more relevant advertising, the power of the tools has downsides. In this paper, we focus on three downsides: privacy violations, microtargeting (i.e., the ability to reach a specific individual or individuals without their explicit knowledge that they are the only ones an ad reaches) and ease of reaching marginalized groups. Using Facebook's ad system as a case study, we demonstrate the feasibility of such downsides. We then discuss Facebook's response to our responsible disclosures of the findings and call for additional policy, science, and engineering work to protect consumers in the rapidly evolving ecosystem of ad targeting. ","Facebook's Advertising Platform: New Attack Vectors and the Need for