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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9 views

A20 samsung and a.c. camera firma supposed to be on my samsung a20 [closed]

Is a.c. camerea firma supposed to be pn my phone? And also what is it used for? Samsung A20
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Husband may have cloned my sim

So if he has cloned my sim and uses it in another phone: My Aqua mail(hotmail) is permanently open on my mobile as is my gmail accounts. I do have a pin on the screen which I change fairly regularly....
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App for remote control [closed]

I am looking for an app for remote control of a device. Something looks like Google Family Link, which also allows remote direct control of the target device. It is not for my children (aka parental ...
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30 views

Switch password by day on Android?

I like to put overly complicated passwords on my phone (currently it has 16 numbers). Is there a way to make the password switch by day? Like every Monday it would be "1234" and Tuesday &...
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Questions Before I Sell My Phone (Too Late To Encrypt Drive?)?

I'm pretty strapped for cash and I need to sell my phone (Motorola Moto G7, Android 10). However, there are some... sensitive... photos of myself on it that I'm not suuuper comfortable with the next ...
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Does an encrypted QR reader app exist that uses public/private keys? [migrated]

One of the ways I quickly copy small texts from my computer to my android phone is through a QR code generator. I pipe the clipboard text into my QR code generator on my computer, then I scan the QR ...
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63 views

How to verify if device is reporting fake technical specs like Android version, RAM, or storage memory?

I've been asked if I can check some faulty behavior of a device, a cheap Chinese android smartphone. I'm not really an android expert, usually I install a few apps to help me figure out few things ...
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27 views

What are the limits/powers of android device policy?

I work in a university and when we want to login in our university email id, we go to gmail So we can also use our official email for creating account on android,but when i try to create account using ...
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101 views

Why do apps paste from my clipboard as soon I open them (without manually pasting anything)?

I have a Google Pixel 5a running the latest version of Android 12 (I updated a couple of days after I bought it, so I didn't use Android 11 much if at all). I noticed that a lot of apps trigger the &...
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38 views

Application Isolation and access control

I want to prevent an app from knowing whether certain files or directories exist on a device. For instance, if the application have some code like: if (/system/lib/libJohnDoe.so){ print("yes&...
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33 views

Malware propgating through usb debugging

Summary: Computer probably had malware. Didn't know. Connected phone to use as midi. Could have turned on usb debugging or usb tethering to see if that helped without knowing what it does as I was an ...
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Is it possible to update the security patch level of Android 7.1.2 to 2019-10-01?

I need help in understanding Android security patch level. I am running Android 7.1.2 in an IMX.7 board. That is the maximum version supported by my h/w. From the NVD vulnerability database, running ...
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46 views

Reset factory and recovery in android

I want to reset my phone. After resetting, can photos be recovered with recovery software? If not, what can I do to prevent deleted photos from being recovered? My phone: redmi note 9pro
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Launch app in chroot environment

I want to setup a chroot environment on my android x86 installation in which I can perhaps run or install various apks. Is there any way to launch an application in a custom chroot environment?
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Is this potential malware?

did a factory reset on my phone late last month and noticed a strange app/process in data usage the last few days titled "com.sec.mimage.uid.retouching:10076", low filesize but enough to ...
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12 views

LG Secure Start-Up On Boot

I encounter this once. My phone was dead batt and I didn't do anything or remember anything that I deleted something in the settings before this happened. All I know is that I slept and my phone's ...
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35 views

Can any virus be removed easily on non-rooted phones?

I know that all android devices are hackable whether they are rooted or not. I have general idea of protecting an android phone (or staying safe with android device) from any viruses. What I want to ...
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67 views

Is there a workaround (rooting, etc) for Android pre-installed spyware?

Is there a workaround (rooting, etc) for Android pre-installed spyware? (as seen in) https://www.tomsguide.com/news/xiaomi-huawei-lithuania-warning https://research.checkpoint.com/2019/vulnerability-...
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32 views

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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34 views

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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43 views

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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28 views

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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36 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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26 views

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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77 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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54 views

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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39 views

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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1answer
226 views

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. I am not talking about the requirement after a re-boot) I can't seem to discern a pattern, ...
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39 views

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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39 views

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
44 views

"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
439 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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63 views

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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74 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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48 views

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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121 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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44 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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32 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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32 views

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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55 views

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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64 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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38 views

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
239 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
47 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
2k 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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25 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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42 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 ...
2
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1answer
75 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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76 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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