"by paying informants, the agency is encouraging technicians to actively look for content. Case in point: the technician who called in the evidence for the California doctor's case reportedly found it in an unallocated space in his computer. That suggests that they didn't just stumble upon the evidence -- they used software with the intention of finding files that were already deleted. The EFF says the relationship between the agency and the retailer "potentially circumvents computer owners" Fourth Amendment rights, so it plans to it's planning to go after the other documents the feds failed to produce for the FOIA it filed."