Systems for secure data monitoring utilizing secure private set intersections are disclosed. In embodiments, program instructions are executable by a computing device to cause the computing device to: generate a garbled circuit program compiled into a first half and a second half; send the second half of the garbled circuit program to a client server of a client; receive social network data from a social network provider; index, utilizing the first half of the garbled circuit program in cooperation with the second half of the garbled circuit program at the client server, the social network data based on predetermined intent categories; and generate search results, utilizing the first half of the garbled circuit program in cooperation with the second half of the garbled circuit program at the client server, based on client data at the second half of the garbled circuit program.