Since upgrading to Debian 8 my syslog is full of
...freshclam: WARNING: Your ClamAV installation is OUTDATED! ...freshclam: WARNING: Local version: 0.98.7 Recommended version: 0.99 ...freshclam: DON'T PANIC! Read http://www.clamav.net/support/faq
While trying not to panic, as instructed, I followed the link. Which goes to a 404! Panic! [joke. EDIT: this link is now working.]
Virus scanners need to be updated regularly, and these updates do not make it into Debian stable frequently. In days gone by we had a "volatile" repo for virus checkers etc. in Debian, then we had workarounds for Wheezy. What about Debian 8, Jessie?
Ideally I'd like to stick with apt for package management, especially as I have unattended upgrades running for security updates.