> In the Windows world people try to protect themselves using antivirus
> software, with very limitted success. In the FOSS world I usually do
> this by limitting installations to packages supported by my distro. Is
> there any other way in which one can reduce the chances of installing
> malware?
Create a user with very limited privileges, (i.e. not a member of any
group in common with anyone else), limited executable directories, and
definitely no sudo rights. Use that id to download, and unzip in their
directories. Have a few short text files in their directories, and look
for any changes to them.
Be sure to use ls -la to see if there are any new .files - these may be
perfectly legitimate, unless they're ... (three or more dots, designed to
masquerade as directory names).
Only put the programs into general use directories after they've run
benignly.