Communion Of Dreams


“Strange how paranoia can link up with reality now and then.”*

When you see news like this in the mainstream press…

Rogue Cell Towers Could Be Intercepting Your Call

It seems rather far fetched at first glance. There is news that came out last week that rogue cell phone towers around the US are forcing mobile devices to disable their encryption making it possible that someone might be able to listen in to your call. “That could never happen to me,” you think out loud. But, apparently it could.

In 2010 at the DEF CON in Las Vegas, security researcher Chris Paget did the unthinkable. He built a cell tower of his own so that he could spoof legitimate towers and intercept calls.The device would mimic the type used by law enforcement agencies to intercept phone calls. In this case, he was able to build it for roughly $1500 US. Paget’s device would only capture 2G GSM phone calls. Carriers such as AT&TT -0.06% and T-Mobile would be vulnerable as they use GSM, unlike Verizon which relies on CDMA technology.

… it’s easy to feel a little paranoid. But is this a real threat? Has anyone actually seen things like this ‘in the wild’?

Yup:

Rogue ‘Cell Towers’ Can Intercept Your Data; At Least One Found In Chicago

So-called rogue cell phone towers, the type that can intercept your mobile calls and data, are cropping up all over the United States, including here in Chicago, according to a company that specializes in developing highly secure mobile phones.

* * *

CBS 2 security analyst Ross Rice, a former FBI agent, said it’s likely being used illegally.

“I doubt that they are installed by law enforcement as they require a warrant to intercept conversations or data and since the cell providers are ordered by the court to cooperate with the intercept, there really would be no need for this,” Rice said.

“Most likely, they are installed and operated by hackers, trying to steal personal identification and passwords.”

Great. Just great.

Well, what can you do? There are some smart phones out there which are designed to thwart this kind of security threat. And I’ve mentioned another option previously. And now there’s a company with a whole line of clothing based on similar RF-blocking technology:

Kickstarting a line of Orwell-inspired clothes with radio-shielding pockets

“The 1984 Collection” is a line of clothing for men and women with removable, snap-in pockets that act as radio-shields for slipping your devices and tokens (cards, phones, etc) into to stop them from being read when you’re not using them.

Hmm … let’s see, there’s a passage from Chapter One of St Cybi’s Well that comes to mind:

Darnell stepped close to her, said in a low voice, “Give me your hand-held.”

She looked at him, raised an eyebrow. “Why?”

“I don’t want to make it too easy for anyone to listen in.”

“Really, Dar, or is this some kind of joke?”

“Really.”

She looked him in the eye, pulled her phone out of her small purse, held it out to him. “Here.”

“Either turn it off or put it into offline mode.”

She fiddled with it a moment then handed it over. He took it and dropped it into the RF-blocking pocket in his satchel. “Thanks.”

“Couldn’t I just have turned it off?”

“Nope. They can still turn it on remotely and activate the mic. This pocket,” he patted the satchel where he had put the phone, “blocks the signal. It isn’t perfect, but it’s pretty good protection.”

I guess I need to get back into the habit of using my RF-shielding pocket.

 

Jim Downey

*Philip K. Dick, of course.

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