Concast & Dial Up LAN communications -- Security Exploit While I was switching ISP's earlier today (from Comcast to DLS) the DSL representative told me of some sort of a security hole in Comcasts service. She said that Comcast and Dial up are on some sort of a LAN (In your physical neighborhood), and that you all share the same bandwidth in that area. Hence, h4ckers can utilize this to hack into your computer. :surprised Is this done through packet sniffing? If so, how is it done and how can I protect myself from it?