I think it is best to avoid these guys.
""MalSign.Generic.F84". Looks like a typical false-positive generated by a heuristic.
There is no malware in the SourceForge Downloader, you can safely use it to install FileZilla. While the SourceForge Installer may present third-party offers, they are clearly labeled as such. All third-party offers can easily be declined. Nothing unwanted is being installed without your consent. Declining offers does not prevent nor otherwise disturb the installation of FileZilla.
If you do not wish to use the SourceForge installer, have a look at the additional download options listed on the FileZilla website."
His stance seems to be that it's not malware, rather a false positive (I have no proof to claim he's wrong and if he is, it could be a honest mistake; he's trusting SF, which I understand), and he mentions that you can also download Filezilla from their own website, without the SF installer.
That seems pretty reasonable to me, but again: at first I got the impression they (FileZilla's owners) simply didn't care.
I hate what SF has been doing, and I refuse to use their installers (although I'm primarily a Linux-user so I don't have to worry about these installers, thankfully), but I don't really feel like the FileZilla owners should be avoided as it looks like they're simply trusting SourceForge, nothing more. I hope I'm right. ;)
Most people, when presented with a) a logo (of a group they trust), and b) accept or decline, they are going to make assumptions and not read the middle.
Which ends up affecting a lot of users: every bad review relating to the installer and every complaint in the forums (once again, in relation to the installer), is a person who has been deceived and had a negative experience, because of a decision of the FZ developers (and the installer is choose-able by the project developer, last I inquired)
If you use Mac check out Transmit by Panic. It's the best FTP client I've ever used.
Most of the time I simply scp or rsync files as neccessary, however I use FileZilla to manage files on my phone and tablets via FTP. I've never found the FTP/SFTP/SMB support in Thunar to be all that reliable...
regardless, this has been happening for the entire last year with the consent of the developers: https://forum.filezilla-project.org/viewforum.php?f=1&sid=13...
I would be very doubtful they will listen to their users any further about the harm it does.
I'll probably avoid FZ from now on, I don't exactly enjoy using software that is openly hostile towards me