A system for providing an ingest proxy and query rewriter for secure data is described. In an example implementation, the system may include a proxy configured to obfuscate data, generate maps of the obfuscated data to the original data, and send the obfuscated data to an analysis server. The analysis server may be configured to generate analysis data relevant to the obfuscated data and the original data by analyzing the obfuscated data. The analysis server may send the analysis data and an identification of the obfuscated data to a user device in response to a request from the user device. The user device may be configured to detect the identification of the obfuscated data in the signal received from the analysis server and retrieve the analysis data from a client device via the proxy.