Hi everyone,
I think I know the answer, but better to check with more experienced people first.
When I first installed WHMCS I followed the recommended action (https://docs.whmcs.com/Further_Security_Steps#Secure_the_Writeable_Directories) for securing the attachments, downloads and template_c folders.
Following upgrades, I now have the newest versions in their original place. So, should I just move the folders' contents to the more secure locations, overwriting files where neccessary? It seems like the logical thing to do, to my way of thinking, but, y'know, ask first!
Thanks for advice and insight,
HarryAdney