social engineering

Short definition from Wiktionary

Noun

1. 1
   Use of numerical data to inform social programs.
2. 2
   Efforts to influence attitudes and social behaviors on a large scale, in order to produce desired characteristics in a target population.
3. 3
   The practice of tricking a user into giving, or giving access to, sensitive information, thereby bypassing most or all protection.

Verb

1. 1
   present participle and gerund of social engineer