For more generic questions relating security issues. For specific issues having their own tags, please use those -- e.g. 'malware', 'antivirus', 'privacy', 'lost-phone'. Please see the full tag wiki for more. For more in-depth Android security issues, you might rather want to visit our sister-site ...

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1answer
1k views

My screen lock is set to “PIN”, and I can't change it to “Swipe”. Why not?

I have tried to do the fix as suggested on here however my swipe option states it was disabled by administrator or something like that. Not sure how I even set a PIN in the first place. How do I ...
1
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0answers
269 views

Nexus 5 WiFi problems

I believe it's somewhat well-known that the Nexus 5 has had more than a few hiccups with certain wifi networks. However, I'm not sure that the main reasons for wifi connectivity issues is as well ...
3
votes
2answers
124 views

Does using various app stores in parallel cause any issues?

I am using a Android phone with Lollipop and found that apps can be installed from various app stores like Google Play, Amazon App Store or F-Droid. Are there any problems I can run into if apps are ...
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1answer
97 views

Will Security apps work even after flashing new rom?

Assume that I have turned on Android Device manager to locate my phone in case of theft, and I also installed some security apps which can send message when someone tries to change the SIM card. ...
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0answers
50 views

Samsung keyboard security bug - was patch released?

Last month, a security flaw affecting the bundled (and unremovable) keyboard app used in many Samsung devices (S4, S5, S6) was announced: New exploit turns Samsung Galaxy phones into remote bugging ...
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0answers
24 views

Stolen phone. If factory reset and used, would it still show under device manager as registered

Lost phone. Google tracking showed it was taken. Tracking ended presumably when battery died. Android manager shows device registered and able to send lock out messages and request phone to ring. ...
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0answers
265 views

how to remove guest creation option while phone is locked

In lollipop, I see the option for creating guest account. During phone is locked with pattern or pin, anybody can just pull down the notification bar and create a guest a account and access my all ...
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vote
1answer
2k views

Avoid Security for Outlook app in Android for lock screen

I had a concern recently regarding my lock screen privileges. I recently installed Microsoft Outlook App for Android and with the installation they asked me to encrypt my phone with either pin, ...
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vote
1answer
684 views

Toast: MMS cannot be sent/received when mobile data is disabled — shows up at every boot in Moto G XT1033 running Lollipop 5.0.2

Details: Moto G XT1033 with Android Lollipop 5.0.2 Is there something wrong? Why would any app request this feature just exactly when I turn my cell phone on? (Click image to see its larger ...
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1answer
80 views

Can't change security settings due to VPN setup

This appears to be a duplicate of this post, but the solution there didn't work for me. Clearing the credential storage wasn't even an option -- it's greyed out. Starting at the beginning -- I ...
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0answers
107 views

Options for Stolen Phone

With an iPhone, you tie your phone to an iCloud account - it happens at the bootloader level. If your phone gets stolen, the thief can't do anything until the previous owner releases the phone from ...
19
votes
3answers
1k views

When selling your phone, what steps should be taken to make sure that all personal data has been removed?

I am getting rid of my Samsung Galaxy S4 and want to know what steps I should take to make sure that private information has been deleted from the phone. I have removed the SD card and cleared all of ...
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1answer
89 views

Can I remotely unlock my phone after I've remotely locked it?

Someone has stolen my phone s4 and is trying to extort me for 100 $. If I remotely lock my phone can I unlock my phone remotely? to let him know that I'm going to shut it down if he doesn't act.
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0answers
528 views

Android 5.1 update, Motorola X (1st Gen) and “Skip” NFC tabs (Really: disable “swipe” step before unlock)

I've just upgraded my gen 1 Moto X to 5.1. I've managed to get the NFC "Skip" tabs working again to unlock the phone, but the overall behavior is worse than with the prior release. Before 5.1, when I'...
2
votes
1answer
124 views

Track down what is putting icons on my desktop

Starting in the last week, something is putting icons on my desktop. I've not installed anything new on this phone (Android 4.2.2) in at least 2-3 weeks (and anything that was installed has been ...
5
votes
1answer
139 views

Is my device vulnerable to the SwiftKey update bug? (June 2015)

Quoth The Independent: There are usually protections in place that stop hackers from performing what is called a “man in the middle attack”, by encrypting communication with the server, as well as ...
1
vote
2answers
1k views

How to recover data from a screen-bricked phone?

Situation I've got a Samsung Galaxy Fame with a broken touch screen. The owner had it protected with a pattern, and as I am unable to make this pattern with a broken screen, I cannot mount the ...
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votes
2answers
2k views

Completely disable hardware and software buttons

I want to completely disable the three on-screen buttons (Back, Home, Recents) and any other hardware button. I am aware that I cannot do this from the application since that would be a major security ...
0
votes
1answer
2k views

System has been modified. Pls contact the manufacturer. Thank you. — i don't know what this mean and something's wrong with my phone.

--- I accidentally deleted my android device manager and other folders on my phone that i thought was not useful at all. After, this message on my lock screen appeared. And i can't unlock my phone ...
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2answers
154 views

How to understand app restrictions set by developers

So I was just looking at are very standard app, - Bank of America and Ally Bank. none of these apps showed up on Google Play Store and in my list of devices they indicated as being incompatible . So I ...
1
vote
2answers
199 views

Malware installed with remote debugging

Is it possible for someone to install apks without you noticing, using remote debugging? (E.g. over TCP/IP, or on the same WiFi network). I found articles referring to this after a quick Google, but I'...
0
votes
0answers
71 views

Mysterious Wifi traffic questions - Malware/eavesdropping?

everyone - I'm having some suspicions of malware infection on my phone. I have around 150 Mb unaccounted for by the built-in tracker on Android. Is there a way I could diagnose that? I have scanned my ...
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0answers
37 views

Traffic logs on android

Very noob question here, but I was wondering if there is a simple way to look at how much traffic I've sent or received on android (not rooted, no specialist apps installed for it). I burned through ...
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0answers
78 views

Found this amazing app on playstore, but how secure is it?

Today I came across a app on play store called RLWatcher. It is an amazing app which could come in handy in a lot of situations. It lets the user remotely sense movement, sound or even just the ...
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0answers
307 views

How to break Android OS security and root a phone, manually?

Not only that one click applications don't work on my phone, I want to DIY root my phone. Upon googling for quite some time, I couldn't find any updated guide. I am willing to write one myself, but ...
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0answers
87 views

How does the smart lock feature on Android define a trusted device?

The smart lock feature on Android allows someone to set a Bluetooth device as "trusted" which makes it easy to unlock. See for example: https://support.google.com/nexus/answer/6093922 I tried to add ...
0
votes
1answer
928 views

Disable long press home button

how can i disable or set password on long press home key button on smart phone. as you know with long press of home button, the running process (like sms, gallery, internet explorer,...) will be shown ...
1
vote
1answer
362 views

what are iss-realsec ,nrpe ,cbt services and are they good?

I am playing with nmap command and for testing using my Lenovo A6000+ phone. When I have scanned its IP with nmap command , its gave me a bit strange result which I am not familiar. Could somebody ...
3
votes
0answers
2k views

Smart Lock not working, is it due to Outlook?

I have a Nexus 6 with Android 5.1, kernel version 3.10.40-geec2459, build number LMY47D. When I first started using the Nexus 6, Smart Lock worked. After a while it stopped working. If I open the ...
0
votes
1answer
177 views

How to reverse a wipe request for a stolen phone

my phone was stolen two days ago and magically found its way back to me today. I activated the wipe function for when the phone is turned on. I'm being told that it hasn't been switched on yet so I'...
2
votes
3answers
5k views

Blocking 'Android System,Battery Warning,com.media tek,Common Data Service…' from connecting to the Internet

I am using NoRoot Firewall to block Internet access to some apps. It recently notified me that this/these app(s) are attempting to access the Internet: "Android System,BatteryWarning,com.media tek,...
1
vote
0answers
208 views

Granting device admin previlage to email account

I am connecting my gmail app(or any e mail application) to my office e mail using exchange. It asks me to add the mail app as a Device administrator for my phone. So that it can Erase all data,Set ...
2
votes
1answer
528 views

How to encrypt an external SD card natively?

There are several questions regarding the possibility to encrypt an external SD card on Android. None of them are satisfactory. They either point to a third party solution (e.g. BoxCryptor, Cryptonite,...
1
vote
1answer
433 views

Tasker: remove security lock when smartwatch is connected

So I just downloaded Tasker because it would be nice to remove the security code when I'm close to my phone (when my smartwatch is connected). I have no experience with it so I thought you guys could ...
4
votes
1answer
427 views

Can an app run code if you don't open it?

Can an app run code if you don't open it? As part of this question, the topic of an app downloading data without ever being explicitly opened by the user was mentioned briefly. It got me thinking: ...
0
votes
0answers
29 views

Can an Android device's security be circumvented when its screen is being changed?

I had shattered the screen on my device (both touch and display) and it was locked with a password. I took it to a nearby repair shop, and they took a long while to do touch-testing out of my sight ...
2
votes
1answer
117 views

Shred an internal or system partition

There are quite a few apps that lets a user delete the media or data partitions so it won't be recoverable - by re-writing "junk" data over and over again on the free storage space. Still, is there ...
5
votes
2answers
151 views

A Windows PC software is pushing its app onto my android devices. How can I avoid it?

This weekend I installed a popular Windows antivirus in my PC laptop. The installer offered the android app, and I denied it. Nonetheless, a couple hours later all my android devices had the ...
1
vote
0answers
207 views

How to tell what app or process periodically sends SMS messages?

About a week ago I purchased a T-Mobile SIM card and activated it on a $3/mo prepaid program. This program requires you to load your account with $3 per month to keep it alive, and these include 30 ...
0
votes
1answer
183 views

Does retrieving backup from SD card retrieve malware & virus, too?

I think I read in other questions here that you can reset your phone to factory setting to get rid of most bad stuff ordinary people can secretly put on your phone such as spy apps, malware, virus etc....
0
votes
1answer
96 views

After Full Disk Encryption, are all subsequent new files automatically encrypted?

I am not talking about the new Lollipop which encrypts everything by default. The older versions, such as Androd 4.2.1/4.2.2 etc. Suppose you went to settings -> security -> encryption, and chose full ...
0
votes
1answer
54 views

Is there a way from where I can keep watch on other mobile screen?

I really would like to know if I can keep a check on other android mobile devices. Scenario is I have Android application Developers team with me and gave them phones and tablets for testing and ...
2
votes
2answers
232 views

How do I prevent unauthorized accession of my data when my phone is connected to the internet ?

I have an Android smartphone and my data connection is always enabled. I often use browsers like Opera Mini and UC Web as they are faster than the inbuilt browser apps. I often use Mobile banking ...
0
votes
0answers
94 views

How can an app decide whether the device is trusted or not?

I downloaded the trustable app from the play store which identifies whether the phone is trusted or not. I run the application and it gave me a score of 4.3 with a suspicious. Is this a genuine ...
0
votes
2answers
3k views

Security: how to prevent USB mounting of mobile device

I am running Android KitKat 4.4.2 on a Samsung Galaxy SIII Neo. As a security measure I would like to prevent my Windows 7 operating system from mounting my Android device whenever I attach a USB ...
0
votes
1answer
37 views

I can't modify Security settings of OS

After a reboot, I cannot configure my normal VPN connection, nor modify some Operating System security settings. What can prevent me from making changes to security settings? Malware?
1
vote
1answer
169 views

alternative to android build in encryption?

I have got a Samsung S3 that forces me to use a 6-charakter password for the phone/SD card encryption. I would like to use a PIN (4-digits) as it was possible in earlier Samsung phones. I am aware of ...
0
votes
1answer
125 views

How to retrieve data from vault android app

I am using vault android app for hiding my secret data. Unfortunately i have moved every things in Internal memory to External SD card. Now I am able to see my secret documents,photos and videos while ...
1
vote
2answers
19k views

“Unauthorized actions have been detected. Restart your phone to undo any unauthorized changes.” notification on Samsung device

I have a new Samsung Galaxy A3 that keeps on giving me a security notice saying Unauthorized actions have been detected. Restart your phone to undo any unauthorized changes. How do I stop ...
0
votes
1answer
187 views

Security implications of remote (Meterpreter) shell to device

An attacker who uses an exploit for e.g. CVE 2012-6636 can use a Metasploit exploit to open a Meterpreter shell in the context of the stock Android browser. But what are the implications of such an ...