How often do you update your antivirus definition?

I set it to auto update. Anti virus, anti malware... auto update, auto scan, auto everything! Why do you have to manually update it anyway?? Unless it doesn't have that option.

I have kept automatically update for my antivirus. and yeah I do update sometimes manually too when I get message to update antivirus from service provider. I mostly update my antivirus once in a day..

really often if available also 1 time every 2 days or when it is possible to update and install the new definition as well!!In reality i think many antivirus are good but f you shouldn't use to be uptodate..you will take safety risks..

I don't usually update my anti-virus manually I just let it auto update. Sometimes I do update my anti-virus manually and I do it once a week.

I update my antivirus manually, i don't like the autoupdates, i update the definition databases one or twice a week and is enough to maintain my system protected.

After one year of using Linux, I have not had to worry about virus or malware. This issue about how often to update anti-virus files is now foreign to me. Anyway, you guys should try my anti-virus software: Linux. It doesn't cost much to own or operate and it certainly does not require third-party software for protection. One of these days, somebody should really sue Microsoft for doing such a lousy job protecting its own operating system. Anti-virus and anti-malware software should all be part of their system and not something that's optional, not to mention, costly.

Yes, I prefer to manually update my anti virus. Though my anti-vius has auto updat feature I do not us this coz I am not sure when I am online. So I prefer the manual way. I do it at least once a day everyday. This is just to ensure that my anti-virus is always update with the definitions and can handle the new infections.