The health care industry will be a large customer of big data while predictive analytics already underlie important health care and public health initiatives. Yet big data are not benign. For example, data brokers, the businesses that buy, process, and sell “big data” are performing an end-run around health data protection by creating data “proxies” outside of HIPAA-protected space. From 2012-14 various branches of the federal government published five major reports on privacy. All five were in favor of increased regulation (...) of data brokers. However, their recommendations for legislative or regulatory intervention were quite diverse. This essay describes the various proposals and offers a critical synthesis. (shrink)