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A silly que for networking programmers
show user profile  sheheryar_noor
As we know that NSA can access any device(modern device) in this world, the question arise in my mind is what if don't have an internet on cell phone but we have SIM activated. Is it possible to access and copy a file from cell phone using SIM's signals? Or lets say is it possible if someone hacks some cellular's company satellite and send a packet to all the users using SIM signals (which i think radio active rays correct me if i am wrong )and access someone's cell phone to copy a file(minimum a picture) contacts and message could be possible. :D Few days ago a Paki guy was arrested in US for hacking people cell phone, idk what he had but the news was on BBC that when someone gets in his mobile phone circle he can access any mobile, so i am thinking if it was through internet then you don't need to get in the his cell phone circle, so if it was without internet can this thing be done globally?
:D Sorry for asking such a silly question
read 785 times
10/28/2014 8:46:09 PM (last edit: 10/28/2014 8:46:09 PM)
show user profile  Nyx
There is no SIM signal but I think you are talking about GPRS signal. In theory you could send data to cell phones and using a back door in the reception program of your cellphone to execute on it a command that would the mobile user info back to you. In reality you would have to find this back door and it might work for some and not for others!
read 773 times
10/28/2014 11:14:05 PM (last edit: 10/28/2014 11:14:05 PM)
show user profile  digs
read 768 times
10/28/2014 11:35:55 PM (last edit: 10/28/2014 11:37:30 PM)
show user profile  herfst1
Sounds pretty illegal... which gets me thinking... why?
read 753 times
10/29/2014 3:06:05 AM (last edit: 10/29/2014 3:06:05 AM)
show user profile  sheheryar_noor
herfst :D just asking don't worry nothing wrong :)
read 742 times
10/29/2014 7:17:44 AM (last edit: 10/29/2014 7:17:44 AM)
show user profile  FX
Nothing worse than someone entering your back door when your unprepared.....traumatizing.....
read 710 times
10/29/2014 10:44:35 PM (last edit: 10/29/2014 10:44:35 PM)
show user profile  Mr_Stabby

3g, 4g or whatever "g" is a blanket term for collections of technologies to achieve a mobile network with certain parameters and features. It refers to the generation (g!) of the (rather loose) standard and can include anything from the ancient AMPS to the modern LTE. There is no such thing as internet signal or sim signal, if there is signal it can be used for whatever.

When communicating with another device, the signal goes through a huge network of fiber optics and hubs. Some of these hubs may belong to parties that have no problem with selling you out so you can pretty much count on the signal being monitorable.

Monitorable doesn't mean exploitable though. While there is no such thing as an unbreakable encryption, a decent amount of TLS will simply take too much data(not to mention time) from the same session to be reasonably vulnerable to a brute force attack. Whether or not your communication is encrypted is another topic, service providers generally don't bother and most phones don't feature the capability. In essence, unless you make sure the communication is encrypted, anyone with a big enough wallet can listen in.

Then there is the actual breaking in. Hacking into an analogue phone is about the equivalent of opening a brick wall with a key - you need something fancy enough on the other side to break in to.
By fancy I mean functions potentially exposed to the network, if there is no line of code somewhere (accidental or intentional) that is capable of doing that certain something to you're device, then it simply cannot be done.

Back in the olden days, the "dumbphones" had minimal or no virtual control over their own software, hence unless sabotaged by the manufacturers, impossible to hack. Smartphones are a lot more volatile though since their software has complete control over itself, there is also a lot more of it so more chances for the good coders to create flaws. Then there is the human factor - since anybody can create software for smartphones and since the user can authorize that software, one can unwittingly screw himself over.

Best you can do here is stick to open source software and disable as much remote capabilities as possible to minimize the risk of some darned bug ruining you're day.

Now more spcifically to your post -
1) no NSA can't access any modern device, just ones that are insecure or rigged by the manufacturer
2) there is no distinction between phonecall signal or internet packet in terms of transport, both go through the same network. If you have no internet then that is just an artificial limitation and doesn't mean that the internet(or whatever other packet) can't come to you.
3) Whether or not somebody can steal files from you - with enough resources and lack of attention by the user, possibly.
4) he definitely wouldn't be able to access ANY phone by just being in range. He might have been able to access a good portion of them if he found something to exploit though but again.. brick wall + key = bent key, just take care of you're gadgets.

read 684 times
10/30/2014 8:25:22 PM (last edit: 10/30/2014 8:25:22 PM)
show user profile  FX
.....or just wear one of these when making phone calls....

read 677 times
10/31/2014 2:08:06 AM (last edit: 10/31/2014 2:08:23 AM)
show user profile  avajames95
read 610 times
11/6/2014 6:35:52 PM (last edit: 11/6/2014 6:36:34 PM)
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