I tweeted too fast, and wrong:
Site were the Dutch Government accidentally leaked its 2012 budget, is a Drupalsite. Yes #Drupal does not secure its files. Drupal for govs?
The mayor news outlets in the Netherlands did not link to the leaking site, but instead to the site that carried (a mirror of the) PDFS that were leaked as well as background information. I followed these links, without researching if these sites were the actual leaking sites. This site they, instead, linked to, is a Drupalsite. The one with the unprotected files was not.
So much for not investigating a little myself! The site that leaked the file, was an ASP (.net?) site.
I am sorry for this misinformation. And as said, tweeted too fast, did too little investigation and that makes me look stupid. I am glad for those that told me my mistake. And because I got married the next morning, writing this errata took more time then is appropriate. Sorry for that too.
As a bonus, and to make things up a little, some common Drupal leakages that I helped fix in clients projects. Obviously I have responsibilities (and even a few NDAs) so I don’t give names and urls.