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0
votes
1answer
149 views

Can someone listen GSM calls with RTL-SDR dongle if A5/1 cryptography is successfully cracked?

Can an attacker listen GSM calls in clear audio form (real time) using RTL-SDR dongle if he/she has powerful-enough hardware to crack the A5/1 crypto scheme in countries where no more secure ...
32
votes
3answers
6k views

Why is GSM still used?

GSMs vulnerabilities have been known a long time now. UMTS was supposed to fix those problems. Why is GSM still used?
6
votes
3answers
1k views

Is it possible to track a missing brand new phone? [closed]

I ordered a Nokia phone online and it turned out that the packet had been tampered and the phone was missing from the package. Obviously it does not have a SIM card, etc. I assume someone stole it ...
0
votes
3answers
177 views

Can my GSM network operator figure out the name of the Wi-Fi access point I am connected to?

I recently saw a film where the police were able to locate where the criminal was because the GSM network operator knew the name of the Wi-Fi access point the phone of the criminal was connected to ...
1
vote
3answers
259 views

How does a GSM triangulation work? [closed]

A have always been told that to get a geolocation of mobile phones there is the need 'ping' it with at least three cells. So actually, a standard and basic triangulation would just get from three ...
18
votes
5answers
3k views

Are SMS,MMS stored on the network service providers' servers?

Are SMS and MMS sent via a mobile phone stored on telecommunication service providers' servers before passing them to the recipient? Does it depend on the country or does every network service ...
-1
votes
2answers
302 views

Can you listen to your last GSM call recorded when calling back a user?

My wife called a GSM/3G number abroad and the call was dropped. She called again and she could hear the whole conversation repeated with the other party but with blank period from her side of the ...
1
vote
0answers
45 views

GSM mobile messages with the first octet 01000000

In GSM networks, it is found that there are so many mobile phone messages (uplink) with the first octet 01000000. For example, the 28-octet message ...
1
vote
2answers
408 views

GSM A5/1 encryption: Key management

I'm currently studying the A5/1 algorithm used for GSM encryption. I understood how thanks to the symmetric private Key and a public counter frame one can encrypt the communication between A and B. ...
1
vote
1answer
211 views

Why does not GSM use any stream cipher mode (OFB, CFB)?

If I understand correctly GSM uses A5/1 stream cipher. My question is why doesn't it use a stream cipher mode like OFB or CFB?
1
vote
2answers
218 views

Is there man in middle attack when using mobile phone calls?

My question is about the encryption between me and my mobile operator. My mobile operator uses A5/1. I use Samsung. Sometimes I see the symbol G on my phone which means GPRS. I don't know whether it ...
5
votes
3answers
1k views

Which is safer, GSM or CDMA?

I have read in the past (no sure where) that unfortunately there exist illegal devices that permit crooks to eavesdrop on GSM mobile phone conversations. I recently also heard that some people had ...
7
votes
2answers
400 views

Is there a way to notify me when my Android phone connects to an unencrypted GSM network?

As far as I know when a phone connects to a GSM (2G or 3G) network, the connection is encrypted. When I get in range of let's say an IMSI Catcher, I imagine this connection will not be encrypted in ...
3
votes
2answers
553 views

What to do when GSM/Wifi is jammed and ethernet cables are cut?

So.. There are household alarm systems (to defend against burglars) which send SMS/e-mail alerts if an intruder has been detected or an alert is trigged. However, Mobile networks can be jammed, and ...
1
vote
2answers
826 views

Fake GSM mobile number?

IMHO there was a Blackhat video about it, but cannot find it: Is it an existing problem that a mobile phone number could be faked? I mean when using internet banking: The attacker gained the ...
5
votes
7answers
618 views

Strategies against jamming attacks?

We have some devices which are designed to use standard frequencies/protocols, such as GSM, CDMA, GPS, Wifi and Bluetooth, among others. While our focus is not thought to be used for high-profile ...
0
votes
2answers
1k views

Is it feasible to make an IMEI sniffer the size of a matchbox within EU legislation?

I want to produce a list over the GSM phones in an area. I don't care about what data goes back and forth, neither are the various conversations relevant. Most phones have IMEI (International Mobile ...
5
votes
2answers
708 views

Is my SIM card vulnerable to DES cracking?

Srlabs have recently published article stating that many SIM cards can be exploited using vulnerability in DES: [...] While the option exists to use state-of-the-art AES or the somewhat outdated ...
14
votes
3answers
6k views

Are phone calls on a GSM network encrypted?

When I make a call on my cellphone (on a GSM network), is it encrypted?
8
votes
1answer
360 views

Getting strange texts to an iPhone #PWD123456#00X

My dad is getting strange SMS texts to his iPhone 4 Some examples: #PWD123456#WHL003=2308480298 #PWD123456#WHL004=2398480389 #PWD123456#WHL002 #PWD123456#WHL002 #PWD123456#STATUS? ...
4
votes
1answer
119 views

Voice Call Safety

When i was dealing with an assistant of my bank through mobile call, she asked me to insert my bank login code after a beep. I was wondering if this procedure is secure against a malicious agent who ...
4
votes
1answer
315 views

HTTP over GPRS - is it secure?

I have project involving a M2M device. The device is not capable of HTTPS but may be required to send and receive information that we would rather not be leaked out. The device will communicate ...
0
votes
0answers
36 views

Sniff GSM packets Wireshark [duplicate]

Possible Duplicate: Smartphone / GSM Sniffer I noticed in a video on youtube is possible to sniff gsm traffic using wireshark. How is this possible ? Do I need a GSM modem to acheive this ...
1
vote
0answers
146 views

GSM monitoring system [closed]

Please help me clarify with GSM monitoring system (active style and semi-active). I cannot differentiate these 2 types of monitoring systems. If anyone can tell me exactly how they operate? Thank you ...
6
votes
1answer
488 views

What governing body is responsible for the use of GSM SMS alphanumeric SenderID's?

Currently, I am writing a paper about GSM sender spoofing and how this flaw is possible with the use of different techniques and attack pattern in the GSM 2G implementation both technically and ...
8
votes
1answer
17k views

How to spoof a cell phone tower (cell site, base station) — homemade IMSI-Catcher

An answer to a recent question has given me an idea for a school project (security CS program). Also, an active attacker (with a fake base station) can potentially force a mobile phone to use ...
8
votes
2answers
9k views

sniffing/recording GSM 3G signals

Is it possible to sniff or record and process GSM 3G signals (from some reciever) given that there is no other signals interrupting etc (the most comfortable conditions) Update (with some supporting ...
6
votes
1answer
5k views

Mobile numbers capture and transmit data

will it be possible to build a low cost hardware/software device which can capture mobile numbers within a specified radius and then use that information to transmit an sms to those numbers? From what ...
3
votes
3answers
642 views

Are there known hacks or security problems on broadband USB dongles?

USB broadband dongles seem to be common everywhere now though I'm not sure what the most widely accepted name for them is. In case I'm using poor terminology I'm referring to USB sticks which contain ...
12
votes
2answers
4k views

Smartphone / GSM Sniffer

This question would be in the category of SmartPhone Sniffers. So we have sniffers that can show the packets that are being sent across a wired or wireless (802.11) network. I am just performing a ...