Looking at how public relations practitioners advertise their services, they do not primarily seem to be followers of the "social engineering" approach.
TEXTBLOCK 1/1 // URL: http://world-information.org/wio/infostructure/100437611652/100438658045
Latitude: 45.33, Longitude: -75.6
At Canadian Forces Station Leitrim collection of foreign signals intelligence is collected. Foreign radio, radar and other electronic emissions are intercepted and analyzed to provide foreign intelligence to the Canadian government. Leitrim contains a wide variety of antennae, including a Pusher HF-DF circularly-disposed antenna array (CDAA), three other large circular arrays, four satellite dishes, and a number of other, small antennae. The targets of Leitrim's dishes are probably Mexican and/or Brazilian communications satellites. Both countries' satellite constellations were established in 1985, at about the same time as Leitrim's new dishes started to be installed. A focus on these satellites would also explain CSE's rumoured increase in Spanish language activities.
Source:
The best known of the two-key cryptosystems developed in the mid-1980s is the Rivest-Shamir-Adleman (RSA) cryptoalgorithm, which was first published in April, 1977. Since that time, the algorithm has been employed in the most widely-used Internet electronic communications encryption program,