1. A method for non-intrusively detecting counterfeit components in a target computer system, comprising: collecting reference electromagnetic interference (EMI) signals generated by a reference computer system using one or more antennas positioned in close proximity to the reference computer system, wherein the reference EMI signals are generated by the reference computer system while a load script is executed by the reference computer system; generating a reference EMI fingerprint for the reference computer system from the reference EMI signals; collecting target EMI signals generated by the target computer system using one or more antennas positioned in close proximity to the target computer system, wherein the target EMI signals are generated by the target computer system while the load script is executed by the target computer system; generating a target EMI fingerprint for the target computer system from the target EMI signals; and comparing the target EMI fingerprint to the reference EMI fingerprint to determine whether the target computer system contains a counterfeit component.