Creates a hard link to the target file in the vault directory
            and saves information about the target file in the database

def secure(self):
        '''
            Creates a hard link to the target file in the vault directory
            and saves information about the target file in the database
        '''
        verbose('Saving information about target into conman database')
        self._id = self.db.insertTarget(self.name, self.path)

        verbose('Creating a hard link from {} to {} directory'.format(
            str(self), config.CONMAN_PATH   
        ))
        link(self.real_path, self.vault_path)