Counter-MASINT
MASINT is mentioned here for completeness, but the discipline contains so varied a range of technologies that a type-by-type strategy is beyond the current scope. One example, however, can draw on the Operation RAFTER technique revealed in Wright's book. With the knowledge that Radiofrequency MASINT was being used to pick up an internal frequency in radio receivers, it would be possible to design a shielded receiver that would not radiate the signal that RAFTER monitored.
Read more about this topic: Counter-intelligence, Defensive Counterintelligence Operations