The rapid spread of social media on the Internet has resulted
in strong changes in the information and communication
landscape. Their inadequate use has given rise to new
discussions on truth and post-truth, what is trustworthy and
what is questionable, the credibility of messages and their
sources. Through this article we aim to examine what
citizens believe about the information they receive and if
they feel whether or not there is withholding of information.
This will be achieved through data obtained from a survey of
a statistically representative sample of the Andalusian
population over the age of 18 (1,103 respondents, with a
maximum margin of error of +/- 3%). One of the main results
of this research is the serious lack of credibility of the
information received, as many Andalusians (68.1%) believe
that information is withheld from them. We have also
observed several factors explaining a greater likelihood of
finding a high belief in the conspiracy theory on the
withholding of information. Finally, the article reflects on
the consequences of mistrust in information and we propose
an inter- and transdisciplinary approach in order to
counteract this mistrust.