Department of Homeland Security (DHS) Emails leaked by #Antisec Anonymous

One of the Anonymous - @AnonWorldUnite today leaked the DHS emails on internet. He tweeted "A Wild Leak Has Appeared! : https://wp.me/p1JyTn-f #AntiSec #AnonOps #Leak #LulzSec #Anonymous https://wp.me/p1JyTn-f"

The link given in the Twitter post is a link to a WordPress blog. The blog post said :
You Asked – And You Shall Recieve #DHS Emails – *all emails and files were obtained legally. -
https://www.mediafire.com/?zidv26ppown4u0s
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The article shows a Mediafire link download link with a PDF file ogc ap redacted foia process 301 350.pdf (8.04 MB) , in which the e-mails are capsuled in.


UPDATE:
As Anonymous Said that, They got this File in Legal Way, We try to find out and Get that this PDF is available on the DHS site at https://www.dhs.gov/xlibrary/assets/foia/ogc_ap_redacted_foia_process_301-350.pdf and https://www.dhs.gov/xlibrary/assets/foia/ogc_ap_redacted_foia_process_651-700.pdf

Easy to find such File using Google Dork: site:dhs.gov/xlibrary filetype:pdf foia . Thats why this should be consider as any Leak. This may be Developers mistake that they DHS allow bots to index such information on search Engines.