Is Comcast 'Hijacking' the Web From Bad Typists?
Comcast this week is rolling out “Domain Helper” nationwide, according to the company’s blog, after the MSO began testing out the service last month in several markets.
Here’s what it does: The service performs a domain name server (DNS) redirect if a subscriber requests a Web site that doesn’t exist — e.g., www.mutlichannel.com — so that instead of a browser error message, Comcast returns a page of search results through a deal with Yahoo (which, it seems, will soon be from Microsoft’s Bing).
Comcast also features sponsored links on the DNS redirect pages. And so the outcry was predictable, with several tech blogs accusing Comcast of profiting from “DNS hijacking” (see these posts from Ars Technica, TechSpot, TheRegister and Slashdot).
Not everyone thinks Comcast’s Domain Helper is a wholly despicable business. DSLReports’ Karl Bode, for one, notes that Comcast has been doing a good job of letting users opt out, with the operator even pointing advanced users to the IP addresses of DNS servers that won’t perform redirection.
“While these services aren’t particularly liked by ‘Net ‘purists’ and are largely a money grab, at least Comcast’s going about the money grab the right way,” Bode writes.
I guess I’m not really a ‘Net purist, because DNS redirects showing search results instead of unhelpful error messages don’t cause me to gnash my teeth with outrage. It’s worth noting that several other ISPs also engage in DNS redirection for mistyped URLs, including Charter, Cox, Cablevision and Verizon.
And Google does it, too. I have the Google Toolbar installed in my browser, and when I typed in “http://www.comtcas.com” the screen below popped up.
So, is this an example of Google “hijacking” the Web? I’ll point out that the feature was activated by default, without my explicitly opting-in.
Let me know what you think.
kerfuffle commented:
GRRR. Verizon did this a while back too. They had different DNS servers you could use. Comcast appears to have an opt-out, but you can wrangle DNS servers out of them too.
Bottom line - they should stick to the RFC.
er? commented:
DNS redirection "breaks various VPN implementation" - such as...?
Bogus commented:
Anything which is rolled out as "opt out" should really be "opt in". The DNS redirection breaks various VPN implementations, and the interception of web traffic has serious privacy and security implementations.
Ted commented:
I think this is about time. Most users are not running servers or some esoteric software that requires full spec DNS.
One time I was install XP and needed to get some anti virus program but made a typo and got a virus. Wasted one hour had start the installation all over again.
Long as they have a decent opt out such as by cable modem MAC address for the technical users everyone should be happy.
Ziggy commented:
It’s a slippery slope. I don’t actually want anyone - Comcast OR Google - to intercept my web browser requests & then suggest sites they THINK I may be trying to reach. Just as I wouldn’t want Comcast trying to correct grammar or spelling in my emails.


















