Android is an operating system for mobile devices such as smartphones and tablet computers. It is developed by the Open Handset Alliance led by Google.

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How android WebView can be exploited and how to secure my app from WebView vulnerability?

I heard that WebView vulnerability is active in android versions before 4.2. I read that it is fixed by google in their newer updates from 4.2. What I want to know is a brief description of the ...
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1answer
162 views

Android encryption when phone is on

So I have android lollipop installed, which should be encrypted automatically with some startup password. My question is, what happens if the phone get stolen while its on, and the screen is locked? ...
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0answers
152 views

How to root a virtual device in android-sdk?

I was amused to see no one have ever asked such a question here before. After a little research in google I found only a few links to root a device in avd. Somewhere I also read that the sdk is ...
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2answers
212 views

Preventing Illegal Access to Webservice

Let me start off by saying that I read other StackExchange questions related to this and they weren't really able to answer my question. I have a feeling this may be an unsolvable problem, but I'm ...
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2answers
99 views

What are the possible exploits over a debuggable APK?

I have heard that an Android APK can be debugged if android:debuggable="true" is set. What are the possible threats in allowing an app to be debugged?
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1answer
51 views

LastPass Bootstrap on New Android Phone [closed]

I've been using LastPass to manage all my passwords, including the password for Google account. The thing is, on a new Android Phone, in order to sign in (for Gmail, Play store, etc), I need the ...
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1answer
94 views

Secure voice app [closed]

When I look in the Google play store (android apps market), I see that there are a lot of apps to make secure phone calls. However, all the apps I have seen so far all seem to use data packets over ...
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1answer
59 views

How much security would I lose if I enabled “easy enter” pins on an android device?

There is an option on android devices to unlock when the correct pin/password is entered, but without the user explicitly pressing the "done" or "enter" button. How much security does this remove from ...
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2answers
94 views

How secure is a MD5 hash of an 128bit key

Apparently, for the Android KeyChain an encrypted master key is stored along the MD5 hash of the unencrypted Key. How secure is that? MD5 is known to have collisions, but I guess we can assume with an ...
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1answer
81 views

encryption of Google's android apps

Does Google use encryption on it's Android apps like Gmail, drive, Google Play, docs, others in authentication and transit? What the type of encryption is it? Is it secure? I have tried searching ...
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1answer
81 views

Storing encryption passphrases in memory in Dalvik?

Given KeePassDroid, I'm considering some of the security implications of accessing KeePass databases on an Android device. In the native applications for Windows, OSX, and Linux, whenever the ...
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1answer
519 views

copy protection (or licensing) mechanism for an android app

I am trying to implement a copy protection (or licensing) mechanism for an android app. The app is not distributed through Google Play or other online market and instead it is distributed through ...
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1answer
89 views

Offline phone security

How secure is an offline android phone? Some background. I want to use an app called Bither on android, which allows me to create a cold wallet on 1 phone and a hot wallet on another phone. Cold ...
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1answer
91 views

How does Android's security model differ from UNIX's?

In UNIX's security model, you log in as a user, and then every process you start can access everything that belongs to your user account - that is, the trust is based on the user account, not on the ...
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2answers
579 views

Intercepting SSL traffic on Android app

I am trying to intercept SSL traffic from my Android app to test the security. I am using certificate pinning in the hopes I can prevent people from snooping. I have tested by configuring ProxyDroid ...
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5answers
2k views

Strange android app … possibly a mass malware?

I started receiving on my android Samsung Galaxy note strange notifications in Mandarin (the language of the people of china). Once I click on the notification it opens my browser with a blank page ...
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1answer
4k views

Android Device Encryption

I am trying to understand when using the default android device encryption in 4.0.4 ICS (AES-CBC 128Bit) how the Key Derivation Function works? That is how is the users decryption passcode transformed ...
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2answers
146 views

Application communication monitoring

I am seeking a way to monitor communication between Android applications in order to detect their suspicious behaviour but I am not sure where to start the development process from. As far I have ...
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2answers
271 views

Steps for building a good File Encryption on Android

I want to be able to build a good file encryption on android for a cloud app. The files used are mainly pdfs, pngs, docs, audio, video, etc (all sorts of files). Edit: My constrains are that it ...
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1answer
784 views

Competitor app blocks our app, need a way to bypass their check [closed]

We have a taxi app which has been quite successful in Europe. But recently one of our competitors has started checking if our app is installed and if it is, theirs won't run until the user uninstalls ...
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2answers
201 views

Fake phone call

I have a problem, getting call from known numbers and when he lifts it, no one is speaking from other side! Well, the awkward part is, the call is from known numbers only, but if I ask the person ...
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2answers
144 views

Android Penetration Testing

I need to do pen test for android mobile application. I have an android mobile and laptop connected to same wi-fi network. I need to intercept/capture the requests/traffic of the mobile in the laptop ...
6
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2answers
1k views

Security concept for Android app with PHP based REST API

I'm trying to build my own PHP based REST Api for my Android app and I'm a litte bit confused by all the different user authentication stuff one can find on the internet. So I want to present my ...
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1answer
877 views

Android support for TLS 1.1

Do anybody know from what version of Android did TLS 1.1 started to be supported directly by the OpenSSL version preinstalled in the system?
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2answers
2k views

How do I protect my Gmail account when accessing it via an Android smartphone?

I have a Gmail account that I also access via an Android smartphone. The mail account could be used to reset passwords for other online accounts, so I want to tighten up the security around this ...
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5answers
9k views

Nexus 7 (Or any other good android tablets) For pen testing

I'm considering investing in an android tablet for pen testing. Does anyone know how capable they are with pen testing? Can they compile code or forward packets? Are any applications that work on ...
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5answers
1k views

Google Calendar has events that I didn't create and it's not shared

This has been rewritten because at first I thought this may be an accident but now it’s clear there’s a security compromise. In my Google Calendar I noticed an event that occurred each day from ...
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1answer
194 views

Adding one's own Cryptography Implementaion in Android

Since Android allows for Java and Native implementation of Cryptography, I would like to know how to provide a particular implementation of cryptographic algorithms (say just RSA for example). What ...
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3answers
6k views

Shellshock Bash bug on mobile systems

Does the bug in Bash affect Android or iOS mobile systems?
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2answers
116 views

Unexpected emails have been sent - do I need to wipe my Android?

A few days ago I received a Notification from my Android saying that it could not send mail because an attachment was too large. I opened my Gmail App and found 5 messages in the Sent Mail folder ...
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1answer
134 views

Virus (or Trojan) in Android

Definition of virus is (from Wikipedia): A computer virus is a malware program that, when executed, replicates by inserting copies of itself (possibly modified) into other computer programs, data ...
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0answers
25 views

version support policy for BYOD devices

In corporate environments where users bring their own devices for access to corporate resources, how can we determine which Android devices are currently supported and receiving security updates? For ...
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2answers
2k views

Is connecting to an open WiFi router with DHCP in Linux susceptible to Shellshock?

Source: http://lcamtuf.blogspot.com/2014/09/quick-notes-about-bash-bug-its-impact.html For the same reason, userland DHCP clients that invoke configuration scripts and use variables to pass down ...
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1answer
783 views

Is it possible to hack an Android App or an Android device without being root? [closed]

Simple question, as the title said. I wondering if in an ideal world where rooting Android devices is not feasible mobile pen testing would be still possible or not. Most of the sensitive folders ...
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2answers
979 views

How to simulate man in the middle attack in android emulator?

I am new to pen-testing. Yesterday i analysed one android application using dex2jar application and i saw an android application implemented https connection using empty trust manager. class miTM ...
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2answers
2k views

How do anti-virus apps for Android work?

There seems to be a lot of anti-virus apps for Android. On a desktop or server an anti-virus must run with super-user privileges, however I am pretty sure these mobile anti-viruses are running as an ...
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4answers
9k views

Is Android's Password Screen Lock Enough Data Theft Protection?

With the exception of the SD card data, is Android's built-in password/pin/pattern screen lock enough to protect data stored in your phone's internal storage in case of theft? Or can a thief simply ...
21
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2answers
1k views

Security implications of rooting Android

My Android smart phone has fancy features that I can get only if I root it, e.g., free-wifi tethering or Cisco VPN (with group name/password). However, the procedure to root my phone makes me ...
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3answers
151 views

Why are apps signed?

From the Android website: Android requires that all apps be digitally signed with a certificate before they can be installed. The signature ensures that only the original developer can publish ...
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2answers
2k views

How does Android filesystem encryption work?

I'm interested in encrypting my Android devices for security in the (hopefully will-never-happen) event of the phone being recovered by an unknown/unauthorized person. How does Android filesystem ...
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1answer
59 views

Entering payment information in Android Apps

I'm concerned how android apps that integrate payment processing deal with secure financial information.When purchasing through these apps the apps show the Webpage of the bank asking for credentials. ...
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1answer
46 views

Charge only in Android

In older versions of Android, when connected via USB the default behaviour was "Charge Only". This allowed the device to charge via USB without exposing its file system to the device providing power, ...
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1answer
3k views

Android / CyanogenMod encryption vs GNU/Linux

Hi I am trying to understand how encrypting an Android based phone works compared to a GNU/Linux host which relies on LUKS dm-crypt. Here is what I understand: Encrypted LVM on GNU/Linux is an ...
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1answer
189 views

Secure communication End-to-end with android and Server

I´m building a enterprise application and I need to create a secure communication between android and a server. What is the most secure way to do End-to-End communication? Should I use HTTPS or VPN? ...
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3answers
89 views

Locating a stolen device

Yesterday my friends Samsung Galaxy S3 was stolen. We have found the perpetrator but cannot yet prove anything. He is uploading photos to social media via the phone. Is there any chance to download ...
0
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1answer
107 views

Shared Memory expolit in smartphone OS

Today there is news about smartphone OS (Android, Windows and iOS) security hole using which some researchers have found a way to literally read all user activity from mobile screen. This is one of ...
6
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4answers
3k 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 ...
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1answer
2k 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 ...
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1answer
221 views

How to stop gmail spam after connecting to public wifi without VPN on Android?

About two weeks ago, I had to reply to an urgent email (gmail) on my Android phone with the Gmail app. Unfortunately, my VPN client refused to work that day (Private Internet Access Android Client), ...
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1answer
71 views

To what extent can Google access data in the standard Android storage locations without restriction?

Android docs lists a number of places to store data here. To what extent can Google access data in these places assuming the developer does not want them to have it? In other words, if I save a ...