I recently needed to install BitDefender on a Linux VM devbox. There doesn’t seem to be any up to date instructions on the web, so here’s what worked for me.
In the terminal:
sudo su
vim /etc/apt/sources.list
Add this line:
deb [trusted=yes] https://download.bitdefender.com/repos/deb/ bitdefender non-free
Save and close the file. (:wq)
To sign the repo and install the software:
wget https://download.bitdefender.com/repos/deb/bd.key.asc
apt-key add bd.key.asc
apt-get update
apt install install bitdefender-scanner-gui
BitDefender can now be run from the Desktop.