from
Jargon File (4.4.4, 14 Aug 2003)
social engineering
n.
Term used among {cracker}s and {samurai} for cracking techniques that
rely on weaknesses in {wetware} rather than software; the aim is to
trick people into revealing passwords or other information that
compromises a target system's security. Classic scams include phoning
up a mark who has the required information and posing as a field
service tech or a fellow employee with an urgent access problem. See
also the {tiger team} story in the {patch} entry, and {rubber-hose
cryptanalysis}.