Further info re above message. Vulnerability code is 11591

There is a version 68. But not all users have been targetted yet to be updated. If you are not having troubles on version 60 I wouldn't worry about not being on 68.

Question - are you using the Pro version of Kaspersky?

Thanks Wayne. Not using the Kaspersky Pro version. The only other issue Kaspersky seems to have with Thunderbird - had it for a long time - is that it "cannot guarantee the authenticity of the domain to which the encrypted connection is established" Application Thunderbird - URL nic-nac-project.org As neither this nor the vulnerable application seem to cause any problems - nothing shows on scans for viruses/ malware / spyware etc I shall just ignore.

Your issue with the nic nac project is that the update URL included in the add-on you have installed from that site in not using SSL. It is not really an issue as none of the add-ons from that site have been updated for V68, so they will be disabled on update anyway.