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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17 views

Url Filtering in android browsers

How android web protection deployed or works in Chrome, Firefox etc in android. In apps like Bitdefender, Kaspersky etc as they do not add any plugin in android browser
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Best way to lock down Android tablet?

We're deploying a number of Android tablets into the field next year. Ideally, we'd like them locked down somewhat so that the users can only access certain apps and settings. Configuring a restricted ...
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is there a way to stop someone remote accessing my device after they have tethered it already? need protection [closed]

so someone close to me is denying they have rooted, bootloader, tethered to my device but apps keep closing, they know information they shoulnt, and they deny it Everytime I try to say something. I'm ...
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How to disable camera and microphone completely from operative system?

Is there a procedure to disable camera and microphone completely from the operative system, and make these hardware features unavailable to any app or process ? It can be useful for privacy reasons or ...
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How to Secure a Android Device that has been Rooted and have Unlocked Bootloader

I'm Talking about securing my data against everyone.(Thieves, Police, Friends etc etc) I'm pretty sure my device have encryption enabled on internal storage,(how can I check that?) also I have a 6 ...
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Can neither clear cache nor data of apps

For the past week or so I have had this peculiar problem where I cannot clear the cache or the data of any app because the Settings show that no storage space is occupied by them. Is this due to a ...
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34 views

Values of successive wait durations for unsuccessful Android pattern tries

On my smartphone running Android 9, the pattern lock seems to work the following way: The user is allowed 5 attempts to draw a pattern. If all patterns in (1) above are incorrect, the user has to ...
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Did Google fix the Wi-Fi attack vulnerability in Android 6 before abandoning it?

Did Google update Android 6 to fix the Wi-Fi attack vulnerability? Wikipedia says the last update was on Oct 1, 2017, while this vulnerability was publicly announced a few days later (but maybe Google ...
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69 views

Steps to investigate what is happening to system files

So, I recently got a notification that space was running out on my 128GB phone. Looking at the segmentation then, the system files was taking about 45 GB data while my other stuff was taking around ...
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How to get a complete list of actual app permissions for a given app (android)

Is there a way in the UI (eg without having to download/extract the .adb and open the app's AndroidManifest.xml file) to view the complete list of permissions that are requested by a given app? Note I'...
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What kind of smartphone should I be buying if my one and only use is going to be "BankID"? [closed]

In Sweden, there's a bunch of very confusing "e-id" things, but it basically boils down to this: you need something called "Mobile BankID". In theory, there are other solutions, ...
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Conditions for triggering "pin required for additional security“

As in title, what are the conditions? (fingerprint isn't enough to unlock the device, one needs to enter PIN too. I am not talking about the requirement after a re-boot) I can't seem to discern a ...
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Is it possible to buy a used Samsung phone with fake/hacked Android ROM that looks like the official one and may spy on you?

I have a used Samsung phone. I wonder if it is possible to have a malicious ROM uploaded that looks like the official one that may allow the hacker to spy on the user. Can I make sure that I have the ...
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How to test scan check MULTIPLE BULK apk app installers for spyware malfunction malware coding

Question How to test scan check MULTIPLE BULK apk app installers for spyware malfunction malware coding I am installing r&d with advertising 300-400 video apps to test and try and check which are ...
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1answer
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"Unable to get VPN permissions, you may need to reboot device and try again"

On my Play Store-included Chinese Android phone (Xiaomi Poco X3 NFC), I recently encountered an issue where I had to re-accept permissions for all of my apps. My VPN app failed, and I began getting ...
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1answer
384 views

Backup app's fingerprint data and restore

I have one app on my device locked with fingerprints. I want to back up this app, delete it, and restore it again without a need to log in again. So it should work again with fingerprint without any ...
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How to execute Android verified boot during first boot after updating OS in Android

I need to execute AVB (Android verified boot) during first boot after updating Android OS. BOARD_AVB_ENABLE = true is already present in the mk file device/hikey/common/BoardConfigCommon.mk in the ...
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67 views

Check for the existence of files without root privileges

How do apps check for the existence of files and folders on /data and /system partitions without having root privileges? I know some games and apps do this for anticheat and security reasons.
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Why does encryption doesn't work/apply to access device storage or Google photos or drive when we upload a file from device/cloud to any webpage/apps

Example : YouTube, Facebook, Instagram, Chrome ( any app ) If I'm accessing YouTube or any other app where I can upload content from Android device with or without the app lock features, whenever I ...
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88 views

Auto IMEI randomization in Android (like WiFi MAC randomization)

How do I set the IMEI number to automatically randomly change every time I connect to a cellular network? Android 9 introduced a feature that was a huge boon to the privacy of Android users: WiFi MAC ...
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40 views

Notification showing on my android without a specific App

I have a Xiaomi Note 9s phone updated with the latest security patched running MIUI Global 12.0.4.0(RJWMIXM) Android version: RKQ1.200826.002 Android Security Update: 2021-07-01 I am getting a ...
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29 views

Is date safe in encrypted phone without passcode

If my phone does not have a passcode, but is encrypted by default, and I factory reset it, is my data safe? Or is there a way someone can decrypt it since it had no passcode
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Phone Stolen- I removed my google account from the device, any way to still remote wipe?

I should have tried to erase the phone before removing the account from the phone, but was too hasty. I've changed all my passwords, but can the thief still see all my old emails and messages? Is ...
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Suspicious Pre-installed Google Files App on Infinix HOT 10

I'm using Infinix HOT 10. I got tired of the buggy pre-installed File Manager, so I started looking for alternatives on Google Play Store. To my surprise, I found Google Files app (which is supposed ...
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61 views

Checking if my second hand Android phone is safe: am I right?

First of all, I know that this question has been asked before, but I'd like to hear if the way I'm checking my "new" phone is safe. I know I'm probably overthinking things, but I just would ...
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As a parent, how can I remove Google Play from view of my kids Chromebook?

My wife and I are homeschooling my daughter this year and she needs a laptop for Zoom meetings and two web sites. I have setup her account so that Zoom is accessible and she can only view the two ...
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1answer
219 views

Possible to have different passwords for device encryption and screen lock?

I'd like my device encryption password to be very long and complicated but a short screen lock password for convenience. Is this possible?
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1answer
36 views

Is it safe to use a Temporary or Virtual Number for creating whatsapp account?

This article in link below mentions some web links and apps that can be used to generate temporary or virtual number, for creating whatsapp account I want to know, whether this whole process is safe/...
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2answers
684 views

Why does WhatsApp insist to "unlock to link a device"?

When trying to connect the app to web.whatsapp.com, the app insists to "unlock to link a device", meaning I get the same screen as when I turn my phone's screen on after it sleeps. I know ...
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23 views

Revoking Certificates for VPN Connection

would like to ask what happens when you press on the clear credentials options during an established always-on VPN connection. As I came across a situation where: The CA certificated was installed on ...
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28 views

LG V30+ PIN removal/change

After resetting a LG V30+ device and setting it up for my son - I can see that - There is a Pin code defined. none of us can remember setting one up and we have no idea what it is. There is no lock ...
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34 views

Can the Phone Repair Service access my 2FA, Google Account passwords, SMS, Photos, etc

I recently took my phone to a mobile repair service (unofficial, 3rd party). The phone had fallen into water and had severe water damage - it was non-functional, I was not able to turn it back on and ...
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1answer
60 views

Gatekeeper timeout. TWRP vs Lockscreen

I have a locked phone (forgotten PIN). Currently, it seems, brute forcing PINs is the only option. Due to many incorrect attempts, the gatekeeper timeout or cooldown period is stuck at 480 seconds now....
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1answer
73 views

"Breaking" into Samsung phone

One of my colleagues has recently passed away and I am left with a task to retrieve data (especially pictures) from his phone - Samsung Galaxy A3 (2017). Unfortunately, he set a numerical code to lock ...
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58 views

Librem 5 Purism hardware buttons, software equivalent on GrapheneOS?

One of the best features of the Librem 5 Purism is it's hardware switches. Any possibility that a means exists that will allow me to do this on GrapheneOS? Software, rather than hardware, of course. --...
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77 views

🤔❓APK components - services, activities, broadcast & content receivers where's their data Stored?

As I understand Every APK install is associated with these components. Trying to figure out precisely where they are stored. Services Activities Broadcast receivers Content receivers For most apps ...
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1answer
49 views

How does Google know whenever I made a login in Android?

Now a time, whenever you make a login or anything using a username or password, Google prompts you to save the password in your primary account. Unlike earlier, when it was limited to browsers only, ...
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0answers
84 views

Are my personal files safe after factory reset?

I am planning to sell my phone Redmi Note 7 running Android 9 which is already unlocked bootloader but no root access, is my data can still be recovered through Android software recovery? I don't want ...
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0answers
208 views

Recovering data from Android 10 (forgotten PIN)

Long story short: I have forgotten the PIN to my Android device, as it wasn't being used for a while. Steps that I have tried/am trying/planning to try: Brute forcing - I have been trying to brute ...
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39 views

Does `adb push` put files in the DE (Device Encrypted) or CE (Credential Encrypted) storage?

Does the use of adb push put files in Android's DE (Device Encrypted) or CE (Credential Encrypted) storage area? According to the FBE (File-Based Encryption) documentation On an FBE-enabled device, ...
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0answers
100 views

How to disable Direct Boot Mode in Android 10 (Device Encrypted, Credential Encryption)?

I want to disable Direct Boot mode on my Android-10-based tablet so that no apps can start on-boot until after I enter my decryption password. Background: As of Android 7, FBE (File-Based Encryption) ...
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0answers
79 views

How to get a list of all apps that start in Direct Boot Mode (Device Encrypted, not Credential Encryption)?

I want get a complete list including all apps (including system apps) that are running in Direct Boot Mode, therefore they necessarily store their data in the DE (Device Encrypted) area (as opposed to ...
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1answer
133 views

Why does GrapheneOS use signify instead of PGP to sign their releases (GPG, cryptographic signatures)?

Why is it that the GrapheneOS (Android ROM) project crypographically signs their releases with signify instead of PGP? The install documentation for GrapheneOS instructs the user to install the ...
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64 views

Does GrapheneOS's Android 10-based releases use FDE (Full Disk Encryption)?

According to the ASOP documentation, it is no longer possible to use FDE and the user is forced to use File-Based Encryption Note: Devices running Android 7.0–9 support full-disk encryption. New ...
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32 views

Nothing happen when 'Tap yes' in Google 2-step Verification

Phone is Sugar C13. The phone is running Android 8.1.0. When I sign in Chrome on PC, I get the "notification" of "Is it you trying to sign in?", and the two step verification pops ...
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162 views

How to use FDE in Android 10 (Full Disk Encryption)

How can I setup Full Disk Encryption in Android 10? According to the ASOP documentation, it is no longer possible to use FDE and the user is forced to use File-Based Encryption Note: Devices running ...
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42 views

Break or trivialize recovery mode

Is it possible to have either a broken recovery mode (without bricking other modes) or a trivial recovery mode (e.g. no menu and automatically shutdown)? Where can I find existing ones or instructions ...
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1answer
42 views

Is there a container-izer for Android, to run an untrusted app that insists to have access to local photos etc?

I need to run an IoT control Android app with network access that also insists to have permission to access local media files, or its a no-go. I don't fully trust this app and I don't want to grant it ...
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30 views

How to format the internal memory of a Huawei Mate 20 Lite?

I have a Huawei Mate 20 lite I need to format its internal memory. I don't mean to reset it to factory defaults. I mean I have to format it, that is, I have to overwrite the internal memory with 0s (...
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0answers
22 views

Securely Sideloading In-House Apps

I am working in a secure environment where we do not have wireless communication of any kind, so the only way of installing an app on our Android devices is to sideload it - the original sideloading, ...

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