That's a proprietary program. I suggest you don't use it.
If you want an antivirus program, that's ClamAV. Look for "ClamTK"; it's in the repo and acts as a graphical frontend for ClamAV. But I should note that antivirus on GNU/Linux is not for your own protection; it's for the protection of Windows users. All viruses that currently exist for GNU/Linux are non-malicious proof-of-concept viruses, mostly because the techniques are ineffective.
