jacobappelbaum.net is hosted on github at:

https://github.com/cephurs/jacobappelbaum.net

Cephurs was an op in a channel run by the law enforcement folks who took down LulzSec:

http://www.xeroflux.net/uploads/Operation_Anon_Rat.pdf

Kinda suspicious.

Totally can't be law enforcement, they forked the repo "FuckNSA".