New Jersey's Cablevision Hijacks DNS Error Pages
Selikoff writes "I just noticed Cablevision's Optimum Online service has begun hijacking DNS Error pages with, you guessed it, ad-supported results. Aside from hurting the underlying stability of the Internet, there have been instances where hackers have used such tools against customers. I know Road Runner customers have had to deal with this for a couple months now, although at least they have an outlet to turn it off." Update: 09/30 13:18 GMT by T : Note, as several readers have pointed out, this hijacking is of DNS errors rather than 404 errors as originally presented.
The problem is that there is no reason to assume that just because a machine is making a DNS query it intends opening a TCP connection to port 80 (or 443).
Even if the hostname starts with www ?