My employer issues a list of security recommendations when using a work laptop outside of the work network. The security recommendations are related to such risks as data theft, viruses, or other unauthorised access. Most recommendations I understand, but this one surprised me:
Never connect simultaneously to two different networks (for example cable and wifi), in particular not when you are connected by VPN to [employer network].
Is there a security risk of connecting both by cable and by wifi simultaneously? Does VPN make this worse? Or is this recommendation not directly useful?