Updating security software with new virus definitions is a priority.

Regardless, anti-virus makers are blocking the software through virus definitions.

The memory and system usage of the product is pretty small, as its virus definitions lie on the cloud rather than in the user's computer.

The company reached its 8000th update to virus definitions on February 12, 2013.

It updates its virus definitions automatically everyday by default using the Internet.

The up-to-date virus definitions on my leading anti-virus program assured me that the file was clean.

Almost all of them have far more interesting things to do with their lives than argue about virus definitions.

If your program is so old that current virus definitions are unavailable, you can try other options.

Many anti-virus packages include an option to automatically receive updated virus definitions.

It is used to update virus definitions only.