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

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3
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2answers
2k views

IKEv2 vs OpenVPN

I want to ask you for information about the IKEv2 protocol for a VPN connection. I haven't found so much information on the web. I am interested especially regarding the usage on a mobile phone. Is it ...
0
votes
2answers
83 views

Two-factor authentication methods: password + SMS/voice message vs. password + app-generated code?

I am thinking which methods of two-factor authentication are most reliable and secure when using Pebble as an user end who has the capability of seeing his or her SMS messages but not answer phone ...
3
votes
3answers
96 views

Implement a passcode to authenticate app users [duplicate]

This question is related to this one. We're busy implementing 5 digit passcode authentication for our app (Android, iPhone), but we're running into a complexity. We're unsure how we can safely ...
1
vote
2answers
81 views

How is generating payment Tokens secure in Mobile development?

I'm using Stripe for in app payments in my mobile app project and I don't quite understand how any app is secure if the user inputs there card info (with or without stripe) if it's not over HTTPS the ...
9
votes
1answer
386 views

Hacking/Sniffing/recording GSM like Karsten Nohl

For a course at college, I wanted to reproduce the attack on GSM shown in this video by Karsten Nohl: https://www.youtube.com/watch?v=0hjn-BP8nro. From what I understand he used an USRP radio to ...
1
vote
2answers
50 views

Is it PCI-compliant/kosher to send a credit card number to a 3rd party sever from a mobile client?

I am building a mobile app, and part of the the functionality of the app is to place an order with a 3rd party. The 3rd party server accepts a credit card number string. Can I build a mobile client to ...
5
votes
3answers
177 views

Does a Smartphone contain all the essential properties of a Smartcard? If not, what is missing?

Can a smartphone, alone, be a valid substitute for a Smartcard? If not, what is missing technically speaking? Does the TPM chipset (which I assume is in the phone) provide enough security to "act ...
-1
votes
2answers
144 views

Someone received a text from my iphone. I don't even have the number the text was sent to [closed]

My son said two of his friends received a text from my phone, showing my phone number. I don't have these boys phone numbers in my phone or know their names. How did this happen?
4
votes
3answers
1k views

What OS's will “brick” a stolen phone; preventing their use or resale by a potential thief?

You can look at this question in two ways: Prior to purchasing a used phone, I want to ensure that the IMEI is not locked and I'm able to use it fully. Or you can be a purchaser who wants to devalue ...
6
votes
1answer
126 views

What tools are needed to view or detect covert messages in a 60 fps video?

The eye can't detect changes in a frame greater than 60 FPS. Similar to this scene in Fight Club, a QR code equivalent is used in pairing the Apple Watch with the iPhone Without knowing that the ...
2
votes
0answers
75 views

Google/Apple account for corporate issued mobile phones

We are working on implementing MDM (Airwatch) for all corporate mobile devices (no BYOD will be allowed). But I have a question as what is the best way to avoid users use their personal Gmail or ...
4
votes
2answers
155 views

How should software respond when Captive Portals or Untrusted SSL certs prevent connectivity?

I need to fix an issue where the initial (or perhaps only) HTTPS call to a website is blocked by a captive portal, not managed by me. The resolution has been to ask the user to navigate to a "http" ...
2
votes
1answer
103 views

How is Smurf Toolkit possible? [closed]

We've probably all heard about the Smurf Toolkit by now. It's the GCHQ's way of tapping phones revealed by Edward Snowden. So supposedly they can take over your phone (even power it off/on!) by simply ...
3
votes
1answer
241 views

Privacy issues when mobile app has access to phone number and contacts

It seems that when it comes to mobile apps convenience defeats security - always. In particular all messaging/communication apps seem to require to have access to your contacts on the phone and your ...
2
votes
0answers
62 views

Can a Tsunami early warning turn “on” remotely some cell phones in Japan?

In Japan, some televisions and radios seem to be capable of getting out of sleep mode if a tsunami warning is issued. If tsunami warnings are issued, the Emergency Warning Broadcast system ...
6
votes
2answers
967 views

Discovering IP or Mac address of mobile devices passing by.

Is it possible for someone to discover the IP and/or MAC address of my mobile device, even if I do not attempt to connect to their network?
3
votes
3answers
161 views

Is it safe returning or giving away a sim card you already used?

I bought a prepaid sim card and used it on my android, but i had a problem using it and would like to return it. Is it safe to do so? I'm wondering if it could now contain my personal information ...
2
votes
5answers
593 views

Is the newly adopted NFC technology going to be safe?

I got sent a link today talking about how the business card company "Moo" is implementing a chip into their cards that will allow NFC connections to do many things such as share contact info, open a ...
0
votes
3answers
243 views

How can i prevent my phone from spying through sms

Recently while reading up a article over here ,The following were the summary : hacking suite dubbed Smurf Suite, it can hack any mobile by sending an encrypted text message So based on the ...
2
votes
2answers
394 views

password grant without client secret?

I'm struggling to decide what to do to get an access token from a mobile app. I'm sure this has been covered before, but I can't find it. I've enabled resource owner credentials grant on my oauth2 ...
9
votes
4answers
3k views

Securely erase personal data from android phone before selling

I have just sold online my old Nexus 5 (Android Lolipop) and need to post it tomorrow morning. I would like to make sure the new owner can't access my files. What should I do?
6
votes
1answer
90 views

Methods to Monitor Ads For Malware on Mobile Devices

I've noticed that malware being introduced to a mobile application or web application through advertisements, unknown to the developer of the application, is becoming increasingly popular. I've been ...
1
vote
2answers
199 views

Mobile Phone Client -> Server Authentication based on device

I have a mobile application (Android, iOS) and a server, which handles requests from the application. It is easy to perform standard authentication using SSL, password and random token to ...
4
votes
2answers
90 views

How am I supposed to verify the origin of a sign-in page in a web view? [duplicate]

I just had to sign in into my google account in an iPhone app. It's a third party, that only uses the google account for authentication. The familiar google sign in page appeared in what is known as a ...
0
votes
0answers
108 views

Cellular Mobile ID number Sniffing

As far as I know, cell phones intermittently transmit a Mobile ID number to inform surrounding cell towers that the phone is available. Is this transmission encrypted, or would one be able to ...
2
votes
2answers
105 views

How can Authenticity be achieved in SMS or Text Messaging?

What tools or information is needed to verify the authenticity of a SMS message... or to send one so that such authenticity is intact? This answer describes something as a "message center", but I'm ...
7
votes
3answers
145 views

Are there any severe concerns of sending the user's login and password with each HTTPS request?

Due to certain requirements/constraints, I'm wondering about sending user login and password with each request. This somehow doesn't feel very good to me, though I think for my particular case, it ...
-1
votes
2answers
271 views

Will it matter if I give to someone the IMEI or Serial number of my device? [duplicate]

Just as the title says, if I have for example a pocket wifi will it matter if I give the IMEI or serial number to someone who ask for it? Or maybe a crucial device that can affect your health like ...
0
votes
1answer
81 views

Key management: Detecting that a key has been compromised?

I am looking at communication between our iOS/Android mobile app on the one side, and our RESTful web services API on the other side. From the server side, I have to assume that anything I receive is ...
1
vote
2answers
56 views

Detecting different jailbreaks

I am using an application that shuts down and quits when it detects a jailbroken phone. Is it possible that this application only detects some kinds of jailbreaks and not others? Or do applications ...
3
votes
4answers
2k views

If a thief has the phone in their possession, how can Password Recovery be implemented securely?

Standard password recovery involves sending a password reset mechanism to the user; either to email, sms or telephone call. However, if a phone has been stolen the thief has full access to these ...
3
votes
1answer
180 views

Dangers of WAP billing?

Recently I clicked an ad by mistake on my phone and it routed me through different pages and popups automatically. On of the pages had my mobile phone provider in its URL and WAP-billing. So I ...
4
votes
0answers
78 views

Are mobile phone calls cached by the network? [closed]

While transmitting a phone call from one mobile phone to another across several carriers, I assume it may be necessary to buffer the audio data for a few seconds. My questions: a) Is it true, ...
2
votes
2answers
119 views

Can BlackBerry keep us safe from network providers

I recently brought a BlackBerry mobile and the reason I have gone with BB was the security it ensures and now I have a doubt. That said in the Internet, Massage from BBM will first reach Canada via ...
1
vote
1answer
136 views

Can the location of a cellphone be pin-pointed?

If a person uses a SIM card that is pre-rica registered (meaning it is not registered on his name but the supplier), can you pin-point where a particular message or call was made from? For example: ...
4
votes
1answer
953 views

iOS application pentest without jailbreak

Is it possible to run a security assessment on an iOS application using a non-jailbroken device? My device was recently restored (recovered - no SHSH blobs) to iOS 8.4.1 (as Apple doesn't like ...
12
votes
1answer
158 views

How can mobile sign-on be secured from imposter authentication screens?

History seems to have come almost full circle where old issues are shown in new/emerging technologies. Background If you trust the operating system, Windows originally had the Control - Alt - Delete ...
0
votes
1answer
104 views

A “hardware” random number generator for mobile phone

I have been trying to write a random number generator using the hardware of the phone. After reading other people's attempts and tried some. I came up with the following to generate the seed: Play ...
1
vote
0answers
168 views

How to know our mobile number or phone has been hacked?

We have a Xiaomi Redmi 2 phone and a sim card in it. Yesterday we started receiving angry and swearing text messages. we called the numbers back and apparently a mass angry text messages have been ...
10
votes
2answers
2k views

Firewall on smartphones

PCs communicate with the help of ports,eg. HTTP communication takes place over port 80. Due to the nature of these ports, an open port is an avenue for an attack. That's where firewalls come in. The ...
2
votes
0answers
90 views

Does the Java version matter when compiling an Android, Amazon, or Blackberry app? (for security reasons)

I need to compile an app that will run on an Android, or Android compatible system (Android, Amazon Fire, or Blackberry). The developer documentation says that JDK 7 is needed, however there are ...
1
vote
1answer
153 views

Does the carrier network autheticates itself to the SIM card?

From my understanding this is how SIM authentication works: When the mobile device starts up it obtains IMSI from the SIM card and send it to the operator network Operator network finds the Ki(128 ...
4
votes
3answers
465 views

How is “Touch Jacking” prevented on iOS, Android, and Win 10 - touch?

I'm looking at the security of both iOS and Android from a Touch-jacking security perspective. In other words, I expect that an application can be in a secure state to ensure that no overlays, screen ...
2
votes
2answers
197 views

How to test image upload vulnerability in a mobile application?

I am administering a mobile application with many users. Users can upload their own .jpg images. I cannot know at this moment if image inputs on the application I am administrating are sanitized or ...
0
votes
4answers
241 views

Cell phone monitoring device

This Chinese company claim their device/sim card can track other cell phone locations, record phone calls and SMS. Is this possible without having access to the other phones first? What do you guys ...
4
votes
2answers
322 views

How to trace source of clickjacking attack within a website using developer tools?

When surfing a popular Wordpress website on my mobile, clicking on a link to an article within would sometimes open a new window to a malicious website or launch the Apps Store. I am interested to ...
3
votes
0answers
183 views

What unique device fingerprinting information can an iOS9 app collect?

As a follow-on to these questions: What unique fingerprinting information can an iOS7 app collect? What unique device fingerprinting information can an iOS8 app collect? Apple has apparently ...
27
votes
4answers
17k views

Is HTML5 vibrate feature a security vulnerability?

While surfing a news website on my mobile, I receive a virus infection alert warning that triggers my phone to vibrate incessantly. The alert looks like the following: I didn't expect my phone to ...
2
votes
1answer
192 views

Two factor authentication: SMS/TOTP, but what if you only use your phone

I found a code by SMS or TOTP on a phone as a second factor of authentication to be a good solution for when you're using your computer to login to a website. Most people have a phone which can either ...
5
votes
1answer
455 views

Security of Yahoo's new authentication: On-demand password

Yahoo is trying to remove passwords from authentication and use on-demand password authentication system instead. I wonder how this new system will be secure? Even if somebody steal your mobile can ...