Number and source of signatures not documented
Hi there! I gave ClamTK a try out of curiosity, and manually asked it to update the signatures. The result is "25949" signatures as of today, and as a user I am left wondering if that's all there is to it, because https://en.wikipedia.org/wiki/Clam_AntiVirus mentions over 5.7 million virus signatures as of three years ago, and if I understood that paragraph correctly, around 23k new signatures were being added daily, which would mean, if the trend continued, that the DB would be around 30 million signatures today...
In any case, I couldn't find anything about this in the ClamTk wiki/website documentation (including the README) or in the ClamTk GUI. Ideally, and especially as there's a ton of unused space on the "Update" GUI summary page of ClamTk, I think it would be nice to have some clarifications for the user there, of what are the sources of those signatures, if there are additional sources that ought to be added, what is an expected/normal number of signatures (i.e. are the multi-million numbers misleading and ClamTk actually has all it needs with only 25 thousand signatures?). If it's a licensing issue, that can be explained as well. If you don't want to clutter the UI with labels, maybe there could be a Help (or Info) button that opens up a wiki documentation page in a web browser.
Just my 2¢ to make your user experience better :)