> In addition, foreign adversaries also hide messages in seemingly random but innocuous comments on forums and blogs made to look like real user communication b

> In addition, foreign adversaries also hide messages in seemingly random but innocuous comments on forums and blogs made to look like real user communication but makes no sense to anyone but their intended target. Sounds like the digital version of Number Stations: https://en.wikipedia.org/wiki/Numbers_station https://en.wikipedia.org/wiki/Numbers_station