None of the information or content on this website should be considered as an indubitable fact.
What is an 'indubitable fact', however, is that they say they will:
... not collect any personal information about you without your clear permission. Any personal information which you volunteer to Hispasec will be treated with the appropriate standards of security and confidentiality, strictly in accordance with the Spanish Law 34/2002 on Information Society Services and Electronic Commerce (hereinafter LISSEC).
But nowhere on the site does it state, as an indubitable fact or otherwise, that they - or the anti-virus companies they work with and to which they may send copies of the files you upload for scanning - will never mis-use those same files.