Comcast turning home routers into public Wi-Fi hotspots

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NEW YORK CITY, N.Y. — If you’re a Comcast cable customer, your home’s private Wi-Fi router is being turned into a public hotspot.

It’s potentially creepy and annoying.

But the upside is Internet everywhere.

It’s been one year since Comcast started its monster project to blanket residential and commercial areas with continuous Wi-Fi coverage.

Imagine waves of wireless Internet emitting from every home, business and public waiting area.

Comcast has been swapping out customers’ old routers with new ones capable of doubling as public hotspots. So far, the company has turned 3 million home devices into public ones.

By year’s end it plans to activate that feature on the other 5 million already installed.

Anyone with an Xfinity account can register their devices (laptop, tablet, phone) and the public network will always keep them registered, at a friend’s home, coffee shop or bus stop.

No more asking for your cousin’s Wi-Fi network password.

Outsiders never get access to your private, password-protected home network.

Each box has two separate antennae, Comcast explained. That means criminals can’t jump from the public channel into your network and spy on you.

And don’t expect every passing stranger to get access. The Wi-Fi signal is no stronger than it is now, so anyone camped in your front yard will have a difficult time tapping into the public network.

This system was meant for guests at home, not on the street.

As for strangers tapping your router for illegal activity: Comcast said you’ll be guilt-free if the FBI comes knocking.

Anyone hooking up to the “Xfinity Wi-Fi” public network must sign in with their own traceable, Comcast customer credentials.

Still, no system is foolproof, and this could be unnecessary exposure to potential harm.

Craig Young, a computer security researcher at Tripwire, has tested the top 50 routers on the market right now.

He found that two-thirds of them have serious weaknesses.

If a hacker finds one in this Comcast box, all bets are off.

“If you’re opening up another access point, it increases the likelihood that someone can tamper with your router,” he said.

Having several people tapping a single machine tends to clog up the Wi-Fi.

Comcast says it found a way to make this work.

With two separate networks, each antenna has its own data speed cap.

Comcast said the private channel provides whatever speed customers already pay to get (most have 25 Megabits per second).

The public hotspot channel is given 15 Mbps and allows up to five people to connect at a time.

That means having your data-hungry friends over shouldn’t slow down your Netflix stream.

Comcast spokesman Charlie Douglas promised “there’s more than enough capacity” in the cables connecting to people’s homes to make this work.

“You shouldn’t experience any conflict between the two networks,” he said. “It’s something our engineers thought about carefully. The last thing we want to allow is to create a bad user experience.”

Comcast’s project that started in northern New Jersey has now spread to Boston, Chicago, Houston, Indianapolis, Minneapolis, Philadelphia, San Francisco, Seattle and elsewhere.

“Before this, there was no value in having Internet when you’re not at home,” Douglas said. “Every time you left the house you walked away from your subscription. But with all these hotspot locations, you can connect to the Internet remotely. Everyone’s device is mobile. It makes a lot of sense.”

But what if you hate the idea of your private boxes turned into public hotspots?

You can turn it off by calling Comcast or logging into your account online.

The company says fewer than 1% of customers have done that so far.



  • CJB

    Well if my neighbors access Internet via my Home Wireless and I am paying the bill, then they ought to pay me or let my Internet serivce be free. IJS……..

  • Joe

    Thanks for this news article. Turning my public wifi off today!!! Comcast proves to be Comcrap once again.

    • Connor Stevens

      Calm down, Professor. Xfinity Wifi operates on an independent radio, and is physically separated from the home networking portion of your router. Basically, Comcast built 2 independent Wifi routers into one appliance, and neither of the devices cross over or can talk to each other. Your private stuff is private unless you elect not to password protect your side of the router. People are so cynical. In reality, it protects YOU when friends and family are in your house because now they can connect to the public hotspot with their own Xfinity password, and you don’t have to let them join your private network unless you want them to. Best of all, it is free. Then again, people whine about free stuff all the time, so it is no surprise.

      • jim

        Connor, You might want to check with someone that knows about routers. Like the article states, two thirds of routers have security issues. This is opening up your home to serious security issues. Ask any 12 year old hacker, opening the public side of a router exposes both sides.

  • Pam

    Everyone chill out.
    1 – You can’t use this wireless unless you already are a Comcast customer
    2 – The external wifi has a separate IP from the customer so if I go by your house and download movies the copyright mafia won’t come after you they’ll come after me cause I had to login with my Comcast username to get on your wireless
    3 – The external wifi don’t count against your lame low Con-artist-castic cap
    COMCAST BLOZE, F— COMCAST we need a real option like Chattanooga has municipal fiber.

    • Connor Stevens

      Let’s get the truth out about Comcast internet, ummKay?. Presently, there is NO data cap on Xfinity internet service. None, Zero, Zip, Nada. There was a failed experiment last year that capped data at 250GB in select markets, however, Comcast decided that customer experience was more important than a few extra $$ for going over the cap. Think about it, Comcast gives their internet and TV customers unlimited access to TV shows and Movies through the TV Go app, Streampix, and online through Why would they want to limit access to their own services? I know it sounds crazy, but there are a great deal of misconceptions about Comcast, and it is time to put them to rest.

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