Nowadays, information systems protection against
social engineering attacks is one of the main issues in the field of
informational security. Intruders often refer to publicly available
sources where users place personal information of various types.
This information makes it possible for an intruder to determine
the most effective way to attack user. In this paper we discuss one
of the approaches to search and collect user's public information
in an automated fashion on the example of social network
VK.com. Besides, prototyping of the software for text
information analysis for evaluation degrees of vulnerabilities
included into the user's vulnerabilities profile was presented.