So looking through the bugs for harden I found the following two bugs.
- https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=782978
Subject: RM: harden -- RoQA; no longer useful Date: Sun, 19 Apr 2015 20:12:06 -0400 The maintainer thinks it would be best for it to be removed:
- https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=760449
Hi I agree with you. I think we should consider to remove the package altogether. // Ola
So the answer seems to be that the maintainer didn't think it was useful or functional anymore.
I have never used the package, so I can't provide much beyond linking you to the correct bug reports.