Questions tagged [security]

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 at http://security.stackexchange.com/questions/tagged/android

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1answer
20 views

Can a blocked contact see any number changes?

I would like to ask, whether a blocked contact will receive an information,if I change my Viber phone number? Is it possible to make the change by only informing a selected group of contacts or ...
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2answers
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Android 4 don't require unlock at home

In the Android OS version 4, what would I have to do to require a pass code to unlock the phone when I'm away from home, but when I'm at my home, I don't need pass-code restrictions. Detecting ...
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0answers
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How can I get the Google Playstore installed ando working in my huawei Y7p [closed]

American government placed a ban on the usage of its software (Google playstore) by Chinese android phone companies.
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3k views

“Certificate not secure” error on Samsung Email app on Note 8

I have a Samsung Galaxy Note 8 (Android 9, One UI 1.0) and am using Samsung's Email app (which comes preloaded on Samsung phones) to access my work email. Recently I went abroad and had to rely on ...
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0answers
70 views

How to switch user profile based on password, lockscreen pattern, or pin?

Is there a way in todays' Android (9 and 10) devices to switch to different users based on the input password? Example: I input pin 1234 and UserB is unlocked/signed in on my phone. If I enter 4321 ...
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0answers
22 views

Constantly changing app “shortlist”

I have a shortlist of five app icons at the bottom of my home screen, usually Phone, Messaging, Chrome, Google and Camera. These tend to remain constant (I've not seem them change). When I swipe up ...
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1answer
19 views

Unknown message saved in my phone as draft [closed]

Sorry if i chose the wrong tags, this is my first question here. So a message with some code: 3244xxx is saved in my mobile as draft. The contacts to which the message is going to be sent are all ...
3
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2answers
1k views

Phone keeps prompting for pattern confirmation

About two weeks ago my phone started popping up the confirm pattern screen for no apparent reason. It happens whether I'm using the phone or not. I took it into the verizon store and the guy played ...
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0answers
12 views

What (especially, installation permissions) are red flags when installing a new app? [closed]

I want to install a language-learning app, but I am a little suspicious of the company behind it. When you install an app, what would make you think something was fishy? For example, if a language ...
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1answer
55 views

how does disabling 'password at startup' works before file-based encryption?

Android 6 (before file based encryption): after encrypting device and setting screen lock, i can choose an option 'require the PIN, password, or pattern at startup' or can i choose 'no thanks'. in ...
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0answers
64 views

Replacing Malware System Apps with Clean Versions of Apps

I have many times found devices or ROMs that have malware installed as system apps. This thread is intended to define a recurring problem and discuss and determine solutions. Background: In many ...
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1answer
7k views

Allow fingerprint unlock but require password after a certain time limit

Currently with a Samsung Galaxy S8, but I believe this is common to other devices, I can setup fingerprint unlock which requires a password when the device starts up or if I fail to scan my finger ...
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0answers
55 views

No permissions but still able to access storage

I'm kinda frustrated! The app has absolutely no permissions but still is able to access my storage (photos and files) on both Xiaomi MI 9T Pro and OnePlus 6 running Android 10 which is all about ...
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7answers
19k views

How to know if a side-loaded app is safe?

How can we be assured that the APK of an app that we are downloading from a website is safe to install on our Android phone? Is there a way to know that the downloaded file is safe? Is there an app ...
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0answers
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Does the use of apk files from the Internet affect the phone system? [duplicate]

Does the use of apk files downloaded from the Internet affect the phone system? Are they safe when not downloaded from Play Store? I am trying to use Lucky Patcher from some websites that provide apk ...
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20 views

How do I properly enter my GitHub password into termux when prompted?

$ git clone https://github.com/shawarkhanethicalhacker/D-TECT Cloning into 'D-TECT'... Username for 'https://github.com': Then I enter my user name no problem. But after that it asks my password.....
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0answers
113 views

App from playstore run but same apk crashes on sideload install

On my noughat device, I have downloaded app from playstore, which is running great. Extract apk from install app, uninstall it and again succussfully install with package installer. But second time on ...
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1answer
4k views

in.android.location.providers_changed: Toggling Location error

Recently in my android smartphone, while toggling GPS the notification popping up "in.android.location.PROVIDERS_CHANGED". Why this is happening recently & not before and how to disable it?
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0answers
29 views

Are there any downsides to encrypting an Android device?

Besides requiring a lock screen, are there any downsides to encrypting an Android device (using the native encryption)? For example: is there a performance decrease? is there a temperature increase? ...
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1answer
62 views

to identify these services after upg. to andr 10?

To all, please tell me if this is relevant to the forum. the problem: I want to identify these services that appear after the upgrade to Android 10, in adjustments -> applications and ...
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2answers
1k views

How can I block incoming connections?

I've been looking for a firewall app for Android for a couple hours now and all I could find is apps that only let me block outgoing connections (for specific apps). Is there any way to set which ...
2
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3answers
3k views

How to avoid silent app installations

I have gone through this post Silent app installation wherein it clearly mentions it's highly impossible to self install the application without going through the whole installer proceedure.But when i ...
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1answer
941 views

Android Verified Boot and generation of vbmeta image

I'm in the process of unofficial device bringup, and I'm stuck unable to progress due to Android Verified Boot. As per specification Android Verified Boot can be disabled with the --disable-verity and ...
9
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1answer
387 views

If an app requires no permission, can I be completely sure that it is safe to install?

I have an app that requires no permissions whatsoever. Please note that this app does not come from an official source. Given that the app requires no permissions: Can I be completely sure that it ...
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0answers
8 views

What can malware on Android 10 actually do? [duplicate]

I was hoping to get an idea of how well modern versions of Android protect your phone using sandboxing. If you install an app and don't grant it any permissions what types of common malware activities ...
61
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6answers
341k views

Disable Screenshot Security

Some apps don't allow screenshots so how can I still take a screenshot? It is my phone and I should be able to do whatever I want with it so why is there even a feature to disallow screenshots? ...
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1answer
4k views

Is a 'Send security reports' notification legitimate? Note 4, 6.0.1

Samsung Galaxy Note 4 (Verizon SM-N910V), Android 6.0.1 After a sudden reboot, my phone displayed a few system notifications in Chinese, and is now displaying a new notification (screenshot attached)....
6
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2answers
1k views

Protect ADB access via network?

I have several Android devices in a local network. (Android Set Top Boxes from Geniatech, running 4.2 Jelly-Bean) If these boxes have problems or need debugging, I simply connect to them via adb ...
1
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0answers
48 views

How to enable 'install unknown apps' on Samsung mobile device?

My Samsung device is running on Android 10, One UI 2.0. I want to install apps using apk file via non-official platforms (the app is not published on Google Play, Galaxy Store). But it won't let me. ...
10
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3answers
3k views

Can I create a restricted profile on an Android cellphone?

Background I want to prevent myself from viewing pornography on my cellphone. I do occasionally go to addiction support groups, but haven't yet done the Twelve Steps that they recommend. I'm hoping ...
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0answers
11 views

Samsung Gear VR application starts itself on my mobile phone Galaxy S7

From time to time a Samsung Gear VR application starts itself on my mobile phone Galaxy S7. I don't have any VR hardware device. I suspect my neighbours trying to pair a device. How to prevent my ...
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0answers
49 views

How can I update my Android Mi A1?

For a while, I have had a notification "Couldn't install system update." Retrying the update and restarting the phone don't help. This is the "December 2017 Security Update." The current ...
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1answer
878 views

DLNA device is requesting access to media files on your phone

I got home from the airport today and I keep getting this "Grant access" pop-up ... Did my phone get hacked? Did some device in my house get hacked? Or am I just paranoid?
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2answers
1k views

How to lock some parts of Settings?

My android device is rooted. Like other android devices, there are many sections in Settings Menu like Wireless & Networks Device Personal Accounts Systems And in all above sections, there are ...
2
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1answer
75 views

How are apps installed on Android ? context - symbolic links of only some apps disappear after reboot

I am using Apps2sd to move some apps to ext4 partition mmcblk1p2. It successfully moved 1 app ( see code below ) but after linking another , the symblink for app gets deleted but data folder's ...
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0answers
6k views

How to Decrypt Huawei Safe File?

I am using Huawei Nova 3i and I have forgotten my password for File Safebox. But here I can see all my files encrypted. It would be great if I can decrypt them so that I can get back all my files. ...
4
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2answers
9k views

Hardware backed Credentials Storage on Galaxy Nexus

First, I hope I choose the right stackexchange for that question. Android 4.3 introduces a "Hardware-backed" Credential Storage. If I go to Settings->Security under the "Credentials-Storage" Header ...
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1answer
964 views

Revoking Bluetooth permission from all apps?

I noticed that my phone silently enables bluetooth when screen turns off. When phones remains inactive for few minutes and I click unlock button I can see bluetooth indicator showing up for around 1-2 ...
3
votes
2answers
5k views

How can I tell if my International Galaxy S3 is suffering from Sudden Death Syndrome? If it is, how can I fix it?

I have a 16GB International Samsung Galaxy S3 (XEF) running the latest firmware, 4.1.2 (yes, the Premium Suite update, I was thinking that this would've fixed it but it seems not) with baseband XXELKB....
2
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1answer
1k views

When you lock down a Lollipop device to disable Chrome's incognito mode, this creates an XML “restrictions file”. What actual XML is inside the file?

Note: If this post is too long to read, please see the summary in the last paragraph. I own an aging Samsung Galaxy S Relay cellphone. It's running Android 4.1.2 and has a built-in physical keyboard. ...
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0answers
10 views

Samsung Tablet not factory Reset due to Security Impliments from Company

Samsung Tablet E not Factory Reset due to Company Impliments the security on Tablet. I cannot install the Application on Tablet and Not open
1
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0answers
57 views

can't pass / unlock Secure startup with PIN code

I have a problem with my LG G5 (but saw it happens in other LG phones) I have a PIN screen lock and I changed it a couple of days ago. I was talking on the phone when it restarted (I remember the ...
2
votes
1answer
783 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 ...
1
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1answer
67 views

Preventing booting from unwanted/upgraded partition in Android

As I understand in Nougat and greater the system has two full partitions, one currently used and the second one that is used for upgrading. So during an upgrade the new bits are laid down on the ...
0
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1answer
4k views

Is Spyboy Android App Safe?

I am interested as a security enthusiasts, to know if anyone has any experience with the app SpyBoy? Does anyone know anything about the legitimacy of the downloads available within the app? What ...
2
votes
1answer
779 views

How to use network interface as non-root user?

I want to communicate between my Android device and my Linux box over IP through the USB network interface mode. The device I'm using is a OnePlus One running CM12.1 nightly builds. It's rooted and ...
3
votes
1answer
212 views

Can apps use USB communications without USB debugging?

This question is from a user's perspective, but it's about whether or not developers can accomplish this. I recently installed DroidCam to use my phone as a webcam for my computer. It works either ...
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0answers
16 views

Securely storing keyfiles with authentication and alike

I am using Keepass as my password manager. I am using a keyfile for securing access to my database. However when I want to do the same on my android phone I have to store the keyfile in my phone ...
1
vote
1answer
97 views

How does Android know my password contains only numbers?

My Android phone's unlock type is set to a password, but it only contains numbers for fast unlocking (I'm well aware that a PIN is an option, but this way presents more possibilities to an attacker). ...
0
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0answers
11 views

When I hard restarted my huawei Y9 it demanded my password but when i did put it it said wrong password.what should I do?

I searched on google to find solutions,I have to enter the Huawei recovery screen in order to reset the phone to factory conditions,so i did but when I tried to enter the recovery system it just said "...

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