Eset Smart Security Offline Update Better -

Ironically, the moment you connect to the internet to download an update, you are exposed. If a zero-day exploit targets the update mechanism itself, your system is vulnerable during the download window. With an offline update, you verify the file on a clean machine (or via a trusted physical medium) before deploying it to secure endpoints.

In large corporate networks with limited external bandwidth, downloading a single update set to a local "mirror" server prevents hundreds of workstations from simultaneously clogging the internet pipe. eset smart security offline update better

What is the primary (e.g., high security, no internet access)? Ironically, the moment you connect to the internet