All they are doing is re-selling DSL service from one of the companies that offers it in your area.
The "hacking" into your PC - yes it's possible, but there are things you can do to secure your PC. Did you know that hackers can get into your PC while you are connected via Dialup, too ?
On my DSL connection, I'm using a firewall that does NAT (Network address Translation), this allows me to share my DSL connection to other computers in the house, and also provides some protection since my PC isn't directly on the Internet. You can also get software that does this firewall protection as well (and it would work over dialup as well).
The "hacking" into your PC - yes it's possible, but there are things you can do to secure your PC. Did you know that hackers can get into your PC while you are connected via Dialup, too ?
On my DSL connection, I'm using a firewall that does NAT (Network address Translation), this allows me to share my DSL connection to other computers in the house, and also provides some protection since my PC isn't directly on the Internet. You can also get software that does this firewall protection as well (and it would work over dialup as well).