I'm attempting to install Privoxy from the repo, however I'm getting a warning that the following packages cannot be authenticated!

I've had a look around, through the Privoxy manual (http://www.privoxy.org/user-manual/installation.html) and duckduckgoed for the last half hour and I'm none the wiser as to why this comes up (I understand that there is some kind of key comparison issue) nor what I can do about it.

I guess this is fairly important as the program is related to online security.

Would really appreciate it if someone could shed some light on the issue, I'm trying to do some good in the world in my own privacy!!

Many thanks!

For one thing, you haven't said what distro and thus what repo. For another, have you reloaded your repo config? If certain authentication files failed to download, you might have to reload to authenticate properly.

Distros use a public key that must periodically be updated. Either the package was not signed with it (which is prohibitively suspicious ...), or perhaps you don't have the most recent version of the key.