What happened to backbox?

Hello first post here i joined Linux-questions to get my hands on a old copy of backbox 4.0 or less i ran that distro back in high-school for fun and trolling i miss it. I'm looking to re-setup the system i had back then for nostalgia and i found it damn useful. I cannot find a download link anywhere on the web all the links are broken i can get 4.1 and up but not 4.0 and down why is it so hard to find? "puts on tinfoil hat" every link is broken not just on linux-questions but everywhere, who has stricken this iso from the web? or am i missing something? thank you for reading.