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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7 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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10 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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47 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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19 views

finding a method for wifi security of my project [closed]

I am trying to come up with a way to control WIFI access. I know about the Mac filtering option on router web interface but some source say Mac filtering is not a security feature because Mac Address ...
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20 views

Notifications On Moto G 6 play help please [closed]

I have a Moto g6 play phone. I was wondering if someone could enlighten me a bit. First I do want to say we have problems with our WiFi being compromised with MiTm attacks. I have two questions ...
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24 views

Stalked by neighbours,hacking any device I pick up using linux [closed]

Can I prevent my stalkers from hacking any device,I'm using s 10+ ,and 3 others and they get in....I see phone tablet ..turn on and off I know straight away,I should start learning Linux its their ...
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44 views

How to unlock network on vodafone kicka 5 [closed]

I am looking for a way to unlock my phone network, but I do not want fraudulent site
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35 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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19 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
63 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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40 views

Disable factory reset

I wanted to know if it's possible to disable factory reset (it should be greyed out), as I uninstalled a few system apps after rooting and I don't wan't that you should be able to restore those apps ...
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32 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

Can someone help me find out what's going on?

I've spent days researching how to read a bug report and still have so much I don't understand. I only ask because a lot of things seem fishy. Such as there's two users for my phone, not having setup ...
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12 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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13 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
175 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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45 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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37 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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40 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
46 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
51 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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177 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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0answers
53 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
57 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
240 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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80 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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29 views

Do android developers get my email address or other info?

If an app only as permissions in the OTHER category can they get access to my email address/name? When you install an app from google play what information does google provide to the developer? Does ...
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0answers
21 views

No package even after package installation

After viewing the YouTube app that came preinstalled in my Android TV Box (Android 7.1.2 OS) for about 6 hours without any problems, now when I launch the YouTube app I get "The installation package ...
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2answers
44 views

Are these app permissions normal?

Can it be used to steal personal data or intercept/view online activity?
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1answer
41 views

Should I be worried about this strange notification from Delta?

I got a notification from the Fly Delta app that just says "test". The icon appears to be missing. Should I be concerned about this? I've uninstalled the Delta app, but I'm unsure if I need to do more....
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37 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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32 views

How easy to discover passwords from stolen device

My android tab was stolen. There was no protection. It has at least 3 pieces of information I care about - amazon, Google and Microsoft accounts. I don't think it's in hackers hands. So how easy for ...
4
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1answer
61 views

Should warnings about not charging your phone at airport/public usb ports be taken seriously?

There are many articles on the internet saying that charging at the usb ports available at the airport and public places can cause your phone to get hacked. Is there any any truth behind this? If ...
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29 views

Does a live OS or a software like deep freeze exist for android?

Is there any custom live OS that is read only and everytime you restart your phone, every change gets deleted? Or a software like deep freeze for windows? If any such solutions exists than can their ...
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1answer
1k 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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1answer
288 views

Is there a way to root an Android phone without unlocking the bootloader?

I've tried almost any method to root my ASUS ZenFone Live, but no one seems to work. Also I only need root, no unlocked bootloader (don't want to wipe data) or custom recovery (not essential ATM).
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24 views

Is it possible to perform an offline malware scan of device image created using a root prompt?

I have created an image of my entire device and all of its partitions (mmcblk0.img). I would like to perform an "offline" scan of my device on my computer. Is there any known projects or ways of ...
4
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112 views

Exploiting Janus (CVE-2017-13156) - what do these error messages mean?

I am working on a school research project about the Janus vulnerability (CVE-2017-13156). Janus is a vulnerability of the signature scheme v1 while installing APKs. I know this does not correspond ...
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0answers
47 views

What's inside the Android A/B-Update payload.bin?

I am using Android 8 for an embedded device, with Android Verified Boot 2.0 secured via HW-keys, and A/B OTA update (no streaming). I want to make sure that the software on the device is tightly ...
0
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1answer
58 views

What private data can apps access without any specified permissions?

Let's say an app doesn't require any permissions at all. What could that app access that could be a potential privacy risk? Other app usage? List of installed apps? Check is my screen unlocked? Google ...
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0answers
28 views

Should I be worried about a website attempting to access my credential storage?

I was reading a website having clicked on a link in the official Twitter app. I was shown this dialog. I took this screenshot, clicked back, then closed the browser. Should I be worried? How come ...
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2answers
134 views

Does the use of Android One remove the risk of OEM spying?

China is forcing tourists to install text-stealing malware at its border. Also, U.S. intelligence officials imply that Huawei, ZTE devices aren't safe for consumers (even in the West). Some ...
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35 views

Long PIN to boot, short PIN to unlock

How do I set up shorter PIN for screen unlocking while keeping long PIN for device boot and filesystem encryption? Short PIN should support limited number of attempts, long PIN may be tried for ...
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0answers
23 views

Choosing between Android security patches and SELinux enforcing

My phone is no longer receiving system updates from the manufacturer so I'm stuck with Android 8.1 December 2018 Android security patches. There are a few custom ROMs available for my phone, based on ...
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0answers
40 views

Help with compromised phone Android 7.0

I want to ask if there's any way I can get rid of whatever's allowing my phone to be unlocked easily without any resetting or Google account? My phone has been messed with and now it keeps getting ...
0
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0answers
31 views

Help with compromised phone, Android 7.0

I want to ask if there's any way I can get rid of whatever's allowing my phone to be unlocked easily without any resetting or Google account? My phone has been messed with and now it keeps getting ...
2
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1answer
57 views

Can a virus/spyware install itself on a system partition remotely?

If I install malicious app accidentally can it copy itself onto the system partition? Or if a hacker gains access to my phone remotely can he install spyware onto the system partition? I have read ...
9
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4answers
7k views

How to protect my Wi-Fi password from being displayed by Android phones when sharing it with QR code?

I would like to know if there is any workaround to protect or hide my TP-LINK Wi-Fi router password from being displayed on phones using Xiaomi (Redmi) phones. If we go to Wi-Fi in a Redmi phone and ...
1
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1answer
485 views

How do I connect to 802.1x EAP Wi-Fi network from an Android 10 device?

My Wi-Fi uses 802.1x EAP with TLS. It works well with the old Android devices, but an Android 10 device pretends that it's trying to connect, and a few seconds later marks the connection as disabled. ...
2
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1answer
79 views

How to secure phone for repair shop?

I've been an android user for many years and so far I've been lucky enough not to need to have a phone repaired by a shop, so I'd never considered this problem until recently. I had to give my Galaxy ...

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