Hi,
its quite simply to compile from source:
Enable Source repositories in /etc/apt/sources.list
deb-src http://ftp.uni-erlangen.de/debian/ jessie main
deb-src http://security.debian.org/ jessie/updates main
deb-src http://ftp.uni-erlangen.de/debian/ jessie-updates main
apt-get -y install debhelper dpkg-dev build-essential fakeroot
Get sources for w_scan
apt-get source w-scan
And start compiling
cd w-scan-20130331 dpkg-buildpackage -rfakeroot -uc -us -b
Or if you don’t want to modify the sources
apt-get source --compile w-scan
And install it
dpkg -i w-scan_20130331-1_amd64.deb
Michael