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
21 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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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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23 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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67 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
57 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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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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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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117 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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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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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 ...
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63 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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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. ...
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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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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
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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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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
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62 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 ...
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1answer
213 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 ...
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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). ...
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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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1answer
50 views

Can we stop Gmail from calling home to google before resolving a url?

When you click on a link in gmail on your phone, it first queries www.google.com with the url of your query, and then redirects to the destination URL. Is there a way to stop this "feature" of google ...
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80 views

Run applications Isolated, avoid embedded trackers

So i'm going to be using microg trying to avoid the million trackers hidden in applications on the play store and mainly use applications from Fdroid as they don't for the most part. I actually had a ...
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39 views

How is it possible that I run android apps with the right user rights

I learned for every app I installed on my Android, a new user is created. And the data for this app is stored in /data/data/app folder with the only access permission to the user that is created for ...
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23 views

Why are certain functions permissible while others are not (from a security standpoint)?

You would think there must be some sort of logical convention or decision-making that leads to what is or is not permissible, followed by sanity checks against each functions' interactions for ...
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22 views

Possible spyware or normal behaviour for Aptoide? [duplicate]

I want to express a strong warning regarding Aptoide, a page which claims to be a safe source for side-loading authentic APKs. I tried their service and downloaded a German online banking app. The ...
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1answer
398 views

Android 9 pie see if device is encrypted

I am trying to figure out if my Android (Pie) is encrypted. Per Is there a way for a user to tell if their Android device is encrypted or not?, it says my phone will be reported as phone encrypted. ...
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125 views

FreeOTP or FreeOTP+ - Which is More Secure?

I have been using FreeOTP by Redhat/Fedora for a few years now as my main two way authentication app. However, I have realised that the current version (1.5) is quite a few years old (having been ...
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1answer
227 views

Why root cannot access “.android_secure” directory on external SD card?

I have an Android 9 tablet, rooted by way of Magisk. It has an external SD card mounted as sdfat on /mnt/media_rw/1234-5678 which is mounted on four other mount points, all as type sdcardfs, with some ...
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1answer
5k views

Suspicious notification from “Find My Mobile”

I just received a notification from Samsungs "Find My Mobile" service, without having triggered anything. The same thing happened to my work mate today morning. As I almost never use my Samsung ...
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407 views

Bypass Samsung Knox factory reset protection

I have an Android device supplied by my government for students and secured by Samsung Knox. However & unfortunately, I forgot the security pattern of the device and I want to hard reset it to ...
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126 views

What mitigation can I take for CVE-2020-0022 (aka BlueFrag)?

A vulnerability, CVE-2020-0022, was recently announced in some versions of Android. My phone, a Sony Xperia XA2, does not yet have an update available. What should I do in the meantime? The report ...
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53 views

What can I actually do with a phone that I “found”

The other day, during a meetup, someone left their phone unattended for a while and I picked it up. It was locked, but as far as I could see, it was one of those "enter a pattern or a number with your ...
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119 views

NetGuard vs DNS66 for Privacy

I have downloaded both of these apps from F-Droid but I am unsure which is the right for me, and what exactly both do differently from one another? I have heard lot's of great things about both of ...
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1answer
120 views

How does rooting affect full disk encryption (Oneplus 3T)?

My oneplus 3T running Oxygen OS 9.0.6 (Android 9) came with full system encryption by default. I want to install root but also keep full system encryption. Will root disable encryption? Does root ...
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39 views

Can I uninstall preinstalled apps and reinstall them from Play store for enhanced security?

I'm reading Android Hacker's Handbook, and it chapter 2 it says: Applications are typically broken into two categories: pre-installed and user-installed. Pre-installed applications include [..]. ...
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18 views

Enable power button instant lock while using trusted device (Smart Lock)

Is there any way to allow a power button instant lock while still using a smart lock trusted device? The desired behavior would be: if I unlock the phone and let it sit near a trusted device it stays ...
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19 views

Many CA Certificates

I bought a second hand Note 8 phone. Everything is good except I'm now getting a warning "A CA certificate authority is installed on this device. Your secure network traffic may be monitored or ...
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0answers
361 views

How to block app silent installation

Recently I noticed I have opera browser installed. I definitely did not install it because I was sleeping at that time. I checked installation time and revealed it was the day before yesterday ...
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0answers
96 views

Set a password at boot before recovery mode on Android Q Huawei P30 Pro

on my old cellphone, I could set a password that was asked at startup to protect it I did not find any similar setting in Android 10 I need help to properly secure my cell phone in case I lose it
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129 views

Removing DRM from android using root

I would like to know what would one have to do to remove DRM (Digital Restrictions/"Rights" Management) completely from an Android phone one has root access to. So far I have thought about removing /...
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58 views

/system/media Directory

First of all, I am currently learning about Android security and wasn't sure if to post it on the Android or Security StackExchange, either way here is my problem... Investigating the content ...
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1answer
54 views

Is permission elevation still a security issue for end users when updating Android?

Is this still an issue for end users?: Researchers have determined that the Android update process has a vulnerability that allows permission elevation without user knowledge. Android allows ...
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1answer
73 views

What are possible consequences of not installing updates

I've a many-years-old android phone on which I've never updated the OS, never logged in to Google Play. I haven't had any google accounts for years. I deleted nearly all apps that came ...
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1answer
978 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 ...
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92 views

Understanding Secure Enclave (or equivalent) - Samsung S8+ SM-955F

I'm trying to understand the limits of the Secure Enclave (or equivalent, I'm not certain what its called) on the Samsung S8+ Specifically, does the secure enclave include any features related to ...
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1answer
125 views

Is it possible to encrypt system partition with custom rom?

I have galaxy s9 and i wanted to have lineageos rom. So i unlocked bootloader and wiped stock firmware of galaxy s9.And then i installed lineageos 15.1 with twrp 3.2.3-0 Then i encrypted phone. I ...
2
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1answer
758 views

SELinux permissive kernel - is it a security risk?

As in title. I am talking of Kernel, not ROM (plenty of questions dealing with ROM on this site). I have a OnePlus 7 running stock Android 10 and prefer a custom kernel. Of late, OnePlus hasn't ...
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300 views

How can I disable the official YouTube app's incognito mode?

Preface: A warning for parents If you want to protect your kids, disabling Incognito mode is usually not enough. If your kids are under age 13, it's wise to use a good filter to block the YouTube app ...

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