about the downloading process is totalli secure..because you can even download zip files....all the inner trafic is masked with the addres of the gateway...even if you check the ip of a inner machine with www.wathsmyip.com it show nothing but garbage....so if you try to connect to an intranet addres you have to pass trougth the gateway...and the gateway is behind a firewall....and betwen the gateway and the intranet is also another one.....