Correspondence With Foreign Nationals
(From the NSA Handbook)
NSA personnel are discouraged from initiating correspondence with individuals
who are citizens of foreign countries. Correspondence with citizens of
communist-controlled or other designated countries is prohibited. Casual
social correspondence, including the "penpal" variety, with other foreign
acquaintances is acceptable and need not be reported. If, however, this
correspondence should escalate in its frequency or nature, you should report
that through your Staff Security Officer to the Clearance Division (M55).