# \[alanhenney@aim.com: \[Scan-DC\] Warning of increased GSM + TETRA attacks\]

**URL:** <https://www.ruby-forum.com/t/alanhenney-aim-com-scan-dc-warning-of-increased-gsm-tetra-attacks/216826>\
**Category:** GNU Radio\
**Created:** [February 15, 2012, 8:35am UTC](https://www.ruby-forum.com/t/alanhenney-aim-com-scan-dc-warning-of-increased-gsm-tetra-attacks/216826 "2012-02-15T08:35:07Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![luislavena](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/l/0ea827/32.png) [@luislavena](https://www.ruby-forum.com/u/luislavena)\
**Post date:** [February 15, 2012, 8:35am UTC](https://www.ruby-forum.com/t/alanhenney-aim-com-scan-dc-warning-of-increased-gsm-tetra-attacks/216826/1 "2012-02-15T08:35:07Z")

</div>

GoMo News

February 13, 2012 Monday 12:43 PM EST

Warning of increased GSM + TETRA attacks

LENGTH: 471 words

Rating: We’re back to Squidgygate and police radio scanners again

Here’s a bit of an ominous warning. Much worse than mere voicemail  
hacking. Greg Jones, a director of wireless security specialist, Digital  
Assurance, is warning of the dangers posed by the increasing  
availability of low cost software defined radio (SDR) solutions. He  
says, “It’s extremely likely that criminal gangs, hacktivists and others  
will all show a growing interest in [SDR]. And we’re not just talking  
about the hacking of individual mobile phones here but the possible  
compromise of critical infrastructure.” In a nutshell, what Mr Jones is  
suggesting is that thanks to SDR it’s no longer possible to assume that  
calls made over commercial and specialist wireless networks are  
inherently secure. We’re back to the bad old days when ham radio  
enthusiasts could list into analogue cellular calls. Who remembers the  
infamous Squidgygate tapes, for example?There’s nothing inherently evil  
about SDR technology. In effect, its arrival has helped to make devices  
like cellular phones c  
heaper by dispensing with the need for multiple, dedicated wireless  
chipsets.

So what’s going on? Jones says, “Those attempting to compromise wireless  
communications systems in the past have used expensive equipment coupled  
with advanced signal analysis skills.”

This is a reference to the fact that breaking standard GSM signals  
previously required a supercomputer. Not any more, apparently.

“SDR devices typically use a standard PC to capture and manipulate radio  
spectrum potentially allowing an attacker to capture and demodulate  
advanced radio systems which were previously inaccessible to the hacking  
community,” Jones explains.

He doesn’t actually mention it but if that ‘standard PC’ includes a  
laptop we could be in deep trouble. Think innocuous white van sitting  
outside your home/office.

Which advanced systems is he talking about? Well, the list includes  
mobile networks such as GSM, Wi-fi, WiMAX, DECT and even TETRA.

So that’s not just your mobile phone, your laptop and your cordless  
phone - we’re also looking at hacking emergency services.

Think police radio scanners used by crooks to know if they’ve been  
detected yet.

Just to make the point Jones even names the tools a budding SDR hacker  
needs. The USRP (Universal Software Radio Peripheral) coupled with open  
source software like GNU Radio. Oops.

What particularly worries GoMo News is the potential to ‘spoof’ a GSM  
base station and intercept the calls you think you are making to your  
bank.

Jones is a master of understatement. “If one were to consider the  
implications of a co-ordinated attack against a critical communications  
system over say London - even if the attack were restricted simply to  
signal jamming - the potential is there to cause massive disruption,”  
Greg Jones stated.

Olympics 2012, anyone?

* * *

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----- End forwarded message -----

–  
Dave Emery N1PRE/AE, removed\_email\_address@domain.invalid DIE Consulting, Weston,  
Mass 02493  
"An empty zombie mind with a forlorn barely readable weatherbeaten  
‘For Rent’ sign still vainly flapping outside on the weed encrusted pole

- in  
celebration of what could have been, but wasn’t and is not to be now  
either."

---

<div class="post-metadata">

**Author:** ![David\_ISEmery](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/d/41988e/32.png) [@David\_ISEmery](https://www.ruby-forum.com/u/David_ISEmery)\
**Post date:** [February 15, 2012, 6:54pm UTC](https://www.ruby-forum.com/t/alanhenney-aim-com-scan-dc-warning-of-increased-gsm-tetra-attacks/216826/2 "2012-02-15T18:54:05Z")

</div>

They are gonna think they can fire up GNURadio and start decrypting  
likes  
it a program. Followed by a influx of “GNURadio is crap” comments…

---

<div class="post-metadata">

**Author:** ![David\_ISEmery](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/d/41988e/32.png) [@David\_ISEmery](https://www.ruby-forum.com/u/David_ISEmery)\
**Post date:** [February 15, 2012, 7:41pm UTC](https://www.ruby-forum.com/t/alanhenney-aim-com-scan-dc-warning-of-increased-gsm-tetra-attacks/216826/3 "2012-02-15T19:41:19Z")

</div>

You know, I wasn’t going to respond to this, but what the heck:

July, 1930 - Anytown USA

“Criminals Use Electronics to Foil Police”

The increasing use of electronic communications by police and other law  
enforcement bodies has lead criminals to engage in methods to  
interrupt and eavesdrop (listen to) those communications using  
off-the-shelf or home-built devices.

Emerging retail outlets such as “Radio Shack” (Boston, Ma) and “Allied  
Radio” (Chicago, Il) have facilitated such criminal activity by  
providing not only complete radio receiver sets, but components such  
as vacuum tubes, condensers, resistors, and such that dedicated  
criminals can use to build their own specialized devices.

Even a simple “crystal set” can be modified by interested criminals to  
listen to police-radio frequencies.

This is a worrying trend, and regulators are busy considering ways to  
put a stop to it.

–  
Marcus L.  
Principal Investigator  
Shirleys Bay Radio Astronomy Consortium

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