Questions tagged [cellular]
Cellular wireless systems, e.g., GSM, UMTS, LTE, 5G
57
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Caller hijacking in Croatia [closed]
I got this issue today and I'm completely confused.
Here is the story:
I'm from Germany and on vacation in Croatia (all inside the EU with EU Roaming) with my German cellphone and German sim card.
I ...
- 11
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1
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Can an employer track phone activity without a company SIM and without MDM?
Been looking for a phone upgrade and my dad has an iPhone (iPhone 13) given to him by his work, which he doesn’t use anymore. He offered to let me use it on the condition that the company can’t see ...
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Swatting police/fire from someone else's cellphone... possible? [closed]
Scenario- calls for 911 service are being made from the cell phone belonging to a young adult. These calls show as outgoing calls on the cell call log (and texts). These have been occurring for over a ...
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3
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Cell tower to cell phone encrypted communication
I have done some search here but I can't understand how phones and antennas share the keys used for encryption and decryption.
As far as I understand, mobile phones today use LTE i.e 4G (sometimes ...
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2
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312
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Is an attacker living close by able to identify my name and spoof my phone number by intercepting SMS messages?
As I read here and there, it seems like SMS isn't encrypted. Let's say I live in an appartment building. If someone uses a cellular modem to intercept my SMS messages, can they determine my name from ...
- 111
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VOIP call encryption
Regarding voice over IP, I'm trying to understand how vulnerable it is to someone intercepting one or both sides of the audio.
Logically, it seems like there are 3 "legs" to each ...
- 101
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2
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591
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Implementing geo-location factor for authentication
I recently had an idea about this:
Why is the geo-location not used as authentication to ensure ownership of an account/login in addition to a password? This would work over GPS which is quite precise ...
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101
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How would a cellular phone call be connected if there are two phones with the same number? [closed]
In the 2004 movie "Primer", the a character goes back in time, and there are two copies of him, both with a cell phone. The character receives a phone call initially, and then receives the ...
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If I create a ServerSocket on Android without specifying an IP to bind to, is it safe to assume this port is unreachable via the cellular network?
I'm using ServerSocket to create a listening port on Android, so that other clients in my local network can connect to it while the phone is providing a personal hotspot. I probably can't specify the ...
- 103
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1
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How do "track a phone location by IMEI" websites and apps work
There are some websites and apps promising (I have not tested their claims, just accidentially saw such a service on some website about phones and apps for them) to show phone location on a map given ...
- 900
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Can you impersonate someone on a cell phone network if you can get them to enter a magic code?
I just got weird warning on a social network about a scam that is supposedly making the rounds. However the claims were quite outlandish and I'm skeptical if it's even technically possible.
If the ...
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Is there a thing as a small bag which BOTH blocks signals AND sound for securing a mobile phone on the go? [closed]
I've been hunting for this for a long time. I've been able to find "Faraday" bags that (allegedly) block signals to/from the surveillance unit (phone), but they never mention anything about ...
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223
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What makes this cellphone (and the weird instructions) so privacy-friendly?
I stumbled upon this weird product in a webstore primarily selling Cannabis-related products (not the actual herbs): https://smoketower.com/nyheter/Anonym-3310-mobiltelefon
I've manually translated ...
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593
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How is security handled between mobile carriers when using roaming
When using 4g or other cellular networks, while roaming, mobile carriers transfer data between each other, something I've seen refered to as "ITS: Internation Transit Service" how does that ...
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Why are IMSI and IMEI still used?
While I understand their function, both IMSI and IMEI makes tracking and surveillance possible by virtue of being persistent idenfitiers for SIM and handset, respectively.
Why aren't these replaced ...
