Security in mobile devices. Issues concerning regular cellphones, smartphones, tablet computers and other portable information devices all fit into this category.

learn more… | top users | synonyms

4
votes
5answers
1k views

Is it possible for a phone to be transmitting even while turned off and the battery removed?

Is it technically or theoretically possible for any part of a mobile phone's circuitry to be still on and transmitting even while turned off and the battery has been removed? If so, how? I am ...
2
votes
2answers
131 views

How do you find out if a phone is secretly sending private data to a remote server?

I read a recent article on a Chinese phone manufacturer on Wall Street Journal that says: The rumors had begun when a user posted online in mid-July that his RedMi Note smartphone was ...
6
votes
4answers
1k views

How do location-based apps avoid getting cheated by emulated GPS?

Some apps like Foursquare require the user to "check in" at physical places, in order to gain money benefits. Given that emulated GPS are available for customized versions of Android, it sounds easy ...
1
vote
1answer
526 views

Can virus save to SIM Card?

(Before everything excuse me because of me English) Today one of my friends asked me about his Nokia 130 Dual SIM. There was a problem about Short Message System. No Messages were sent from that ...
0
votes
1answer
199 views

Native app, token authentication without login/password

I'm working on a always online mobile game (native android/iOS app with Unity) and i would like to be able to authenticate the player without requiring any login/password at the beginning. For those ...
9
votes
5answers
645 views

Can a mobile phone battery contain malware?

It has 3 terminals and is presumably a smart battery. I bought it on ebay recently for $2.74 USD and that included postage from China to Australia. It would normally retail for maybe $40 - $50. The ...
7
votes
2answers
379 views

LTE networks and MITM

2G would leave you vulnerable to spoofed base stations. 3G tried to somewhat fix that using mutual authentication. Now, I tried to check how LTE handles this but I couldn’t find any usefull ...
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. ...
89
votes
9answers
48k views

Why can we still crack snapchat photos in 12 lines of Ruby?

Just came across this bit of ruby that can be used to decrypt snapchat photos taken out of the cache on a phone, apparently adapted from here. To my surprise, it worked no problem, considering the ...
1
vote
1answer
302 views

Security: Oauth and Mobile apps

This is what I believe are the security implications of integrating Oauth using embedded webview vs browser in mobile application. Embedded Webview * Keep UI for mobile app Security implications ...
3
votes
2answers
167 views

How can I validate time-sensitive data is coming from a mobile app, and not being forged?

In our application, a user selects answers to questions. Their score is based on the time spent answering each question down to a tenth of a second. The server is responsible for calculating and ...
43
votes
1answer
4k views

How does a SIM card prevent cloning?

I have read a few articles about SIM cards, stating that the chip inside them uses some cryptographic magic to prevent people from cloning your number. This to me seems borderline impossible, given ...
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 ...
4
votes
2answers
609 views

3G Femtocell at home: can anybody connect, and is all traffic encrypted?

At our office we have bad reception for 3G. We bought a Femtocell device that provides a 3G connection for one specific mobile provider. This device is connected to our network via ethernet. I cannot ...
1
vote
1answer
1k views

iOS: sandbox of an iphone app

I am new to iOS so I do have only limited knowledge about iOS in general. For self learning purposes, I would like to know several things as I am quite confused after searching the web. I do know ...
0
votes
2answers
344 views

Pre boot authentication for Android phones [closed]

is there any way to have pre boot authentication on android phones? It would be nice if it would work with YubikeyONE's one time password mode.
-1
votes
1answer
384 views

Someone borrowed my phone and Im scared its hacked [closed]

I am from Australia and I use a iPhone 4. Today, a young guy asked to borrow my phone, since he was out of credit and since I was trying to be a good samaritan, let him borrow my phone (also we were ...
0
votes
0answers
36 views

Mobile App Processing Debit Card Transactions

I am creating a mobile app for iPhone and Android and the respective API that will be exposed to support the operations. This operations will require the customer to type the PIN to complete the ...
0
votes
2answers
65 views

How to securely serve client-side-only web content to mobile with convenience?

For a cryptocurrency client implementation, I am serving a single page webapp to mobile clients. It is a client-side-only page. I would like to serve this page to clients, but I fear tampering by ...
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
0answers
125 views

How to secure my REST API once user authenticates with Google on mobile client?

In my application, I build REST APIs so that user can interact with my application server. Since I do not want to maintain User/Passwords, my iOS app authenticates client using Google. This all ...
0
votes
1answer
111 views

A no-login approach to authenticating a certain device, MAC-Address as password?

I have created a REST api, and now i'm thinking about authentication. I want the mobile application's flow for the user to be very simple: only having to enter a username and then this username ...
0
votes
0answers
196 views

Mobile Backend Server: How to validate authenticated client is valid?

Consider this scenario Step 1: App asks user to "Sign In" using Google or Facebook Step 2: Once authenticated, app sends user's Id (from Google/Facebook) to My App Server requested to app ...
1
vote
1answer
99 views

Checking if apk's contain malicious software [closed]

Is there a programmatic way to check if a given mobile application executable is malicious through some sort of lookup service? I have used Virustotal for desktop malware, does it work for mobile ...
5
votes
3answers
441 views

Detect spy software on Symbian

I would like to check a Nokia N8 for possible software that might send any kind of data without my consent. Is there a specific tool to achieve this? Are there specific techniques?
1
vote
1answer
126 views

What cellular network is used for automobile theft recovery? Can that be used for PCs and mobile devices?

I'm interested in sending a remote wipe command to stolen IT devices, such as a cell phone, or wifi connected device. However most remote wipe technologies require that the cellular service (or wifi) ...
-2
votes
1answer
56 views

Voicemail PIN reset - what is a DDN? [closed]

Here is a recording of Glenn Mulcaire using social engineering to reset the PINs to voice mailboxes to which he did not have authorised access. (At least, that's my understanding.) He appears to say ...
3
votes
2answers
391 views

How can I get a fiddler-style trace of an iPhone / Android?

I want to audit the HTTP and HTTPS activity of apps downloaded onto my mobile device. What is the best way to do this? I own the device, can add a root certificate, and can connect the running ...
0
votes
0answers
19 views

Is SCEP safe if I use a different long and complex password per enrollment, and validate it against expected parameters?

I'm considering using SCEP to enroll iPads and other devices in my network. The iOS configuration profile allows me to configure a different password for each device. Is it valid, and safe for me to ...
0
votes
2answers
3k views

Why don't mobile operators blacklist stolen phones using their IMEI?

I've just read this piece of news that Android and Windows phones will get a 'killswitch', rendering them useless to potential thieves. However, since all devices have a unique identification number ...
0
votes
0answers
18 views

Should an SMIME signing and encryption key have different expiration dates?

Assuming the client supports different keys, what is some rationale that should be considered for signing and encryption keys? For example, since the encryption key needs to be present on each device ...
1
vote
3answers
106 views

Is it possible to read files in a mobile phone for carriers through mobile network alone?

Say a smartphone does not have any (internet) data plans activated (no gprs, 3g data etc.). It just connects to the tower for calls. So is it technically possible for the carrier or law enforcement ...
0
votes
1answer
76 views

How do I secure “Data at Rest” only allowing Service API to access it from a mobile application

How do I secure data at rest from unauthorized access, but still allowing my application to access the data using user authentication over HTTPS? My scenario is as follows: Login to application ...
1
vote
0answers
141 views

Security risk of connecting one mobile device to another mobile device's hotspot

Is there any risk when connecting an Android Phone to a [Verizon] iPhone's Hotspot? If there are I'd like to know about solutions. The Android Phone will basically be tapping the data plan of the ...
0
votes
2answers
186 views

What is the purpose of HTTPS GET vs POST requests when certificate pinning?

I have a mobile app which uses public key pinning to make sure that I only connect to servers from my CA. This works great with https, and it makes it so that nobody can really proxy my server and ...
1
vote
1answer
518 views

Transparently authenticating users or devices on mobile devices

I have an interest in using EAP-TLS to authenticate both users and devices separately on mobile devices (phones, iPods, tablets, etc.). My issue is how to delineate between user authentication and ...
5
votes
2answers
968 views

GET over HTTPS vs POST over HTTPS [duplicate]

How safe is a hybrid mobile application developed using a GET Web service over HTTPS? What are the pros and cons of using it and how safe is POST over HTTPS?
0
votes
2answers
129 views

Is it safe to rely on text messages as a means on authentication?

Many websites, including banks, use text messages as their primary or secondary means of authentication. In theory, it sounds like a perfect method unless the user loses their phone or has it infected ...
1
vote
1answer
70 views

Does PCI DSS 1.4 include tablets and smartphones?

1.4 install personal firewall software on any mobile and/or employee-owned computers with direct connectivity to the Internet (for example, laptops used by employees), which are used to access the ...
1
vote
2answers
562 views

Is there any documentation or reviews about LINE messenger security?

I tried to find any documentation about the security of LINE messenger, but I couldn't. Is there any documentation or reviews about the communication protocol it uses, and whether or not it uses ...
4
votes
1answer
763 views

Authenticating users on offline devices such as ipad

We are wanting to authenticate the user inside a webapp (JavaScript/HTML inside browser) running on a tablet, but want to be able to do this when the device is offline from the network. I realize this ...
0
votes
2answers
132 views

IMEI or IP being recognised?

Can a website see my IMEI number? I have been banned from a website for multiple accounts, although I always cleared cookies, disconnected and reconnected from "the cloud" which gives me a different ...
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 ...
13
votes
4answers
2k views

Tools to help test the security of Android applications

What are some decent frameworks to test the security of Android applications? With frameworks I mean either software based to automatically scan these applications or a guide (like OWASP has for ...
1
vote
0answers
84 views

How do Android reverse engineering tools extract packages/ package hierarchy present in Android apps? [closed]

I have been involved in disassembling Android apps using baksmali and dexpler. Whenever I disassemble an app, I find the packages and package hierarchy (that would have been available in development ...
26
votes
6answers
3k views

Best practices for securing an android device

Does anyone have any suggestions on securing an Android device? I'm not particularly interested in enterprise level software - I'm looking to secure my own ZTE Blade phone which has a lot of personal ...
0
votes
0answers
26 views

Does analyst API Flurry break Australian Privacy Act or any other Legal, Regulations, Compliance?

I want introduce Flurry API in my iOS app. But I heard since 2014 Australia start an act to against web page and mobile app to collect user information. My question is simple: Does using of API ...
6
votes
1answer
1k views

Imei and phone number given to unknown sources. What are the risks?

The facts: A friend put his phone number (and possibly the IMEI) for his android device into some kind of hacking PC software that promised to (and actually did) extend his Whatsapp account that was ...
10
votes
2answers
1k views

Caller ID Spoof and Text Spams – How do they work?

(Posted here after a comment/suggestion from: http://superuser.com/questions/254340/caller-id-spoof-and-text-spams-how-do-they-work. Apologies if deemed not appropraite) A lot of people will have at ...
13
votes
2answers
25k views

Is it possible to make a phone call appear to come from another phone, even to the network provider?

Quick Question Is it possible that I could call a mobile number, but have the call forwarded through another number active on a different phone that someone else has? I have had unlimited access to ...