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Questions tagged [smartphone]

A smartphone is a mobile device which combines many of the basic features of personal computing such as email, media playback and web browsing, with the traditional features of a telephone.

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1answer
131 views

How to secure a smartphone left for repair?

I need to leave my phone at a repair shop. The reparation is not trivial, so I can't expect them to do it under my eyes while I wait. But my phone is all my life. Like for most of us (I guess), I ...
2
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1answer
102 views

Hide an app on Android

Is there any way to completely block anyone or anything from detecting an app that is installed on any Android device? Not from physically looking through someone's device but from google or any ...
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1answer
39 views

Protecting Android debug bridge that is connected to the internet

I have an android device which acts as a brain for my home security that has access to cameras, heat sensors, motion sensors and some appliances. I have enabled android debug bridge on my android ...
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0answers
61 views

Can a smartphone's PIN or password be brute-forced in an offline attack?

I know of exhaustive offline dictionary and brute-force attacks against any given online account, but can the same method be applied against phones, either Android/iPhones? Or would any such attack be ...
2
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0answers
51 views

How does the “Control Frame Attack” bypass the MAC-Randomization on Smartphones?

In this Study regarding MAC-Randomization of different Smartphone Manufactures on page 15 the so called Control Frame Attack is described. I'm not sure whether I understand this correctly. Are they ...
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0answers
112 views

Why don't smartphone manufactures write the IMEI onto one time writable ROM so that it can't be tampered with? [closed]

The title says it all basically. Even now, why is tampering IMEI possible at all? Shouldn't manufactures be using one time writable memory to embed IMEI into phones? Why don't they?
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1answer
131 views

Do smartphones have built-in surveillance in certain countries?

I recently was in a third world country which is know as a police state with heavy cyber surveillance. I noticed that brand new smartphones came in a box that had a nice holographic seal showing the ...
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1answer
40 views

Lock gmail access from a smartphone

A friend has broken his smartphone. It has (at least) three security issues: It is not protected by any PIN, password or fingerprint It automaticaly access gmail (I'm not sure if he just rememberd ...
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1answer
147 views

Can a smartphone get hacked even when off? [duplicate]

I've read that there are multiple batteries inside a smartphone, so even when you turn it off it can still communicate with other devices. So my question is, could a smartphone get hacked even when ...
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2answers
164 views

Can a hacker access smartphone data while locked?

Imagine you leave your smartphone in a hotel room for half an hour. Screenlock is on. Latest security updates are installed. How could somebody steal your data from the device given enough ...
11
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1answer
497 views

How was Walmart able to pop up an unsolicited “Rate your visit” notification on my phone?

I was in Walmart this afternoon, and later this evening I noticed a strange icon in the upper left of the home screen on my android phone. On examination, I found a notification ostensibly from ...
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0answers
142 views

Recent Pwn2Own baseband exploit

I've just stumbled upon the Pwn2Own Mobile news from three days ago. During which apparently several flagship mobile phones of several manufacturers have (again) been successfully zero-dayed, among ...
10
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1answer
152 views

How can faulty version of an iOS app (such as WhatsApp) expose the whole device to crashes or take-over

There was a lot of recent, prominent news about a security vulnerability in WhatsApp that affects also iOS versions of the app. The volnerability has been described as carrying the risk of an attacker ...
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1answer
97 views

Does the device you are logging into count as one of the factors for MFA when you are using device biometrics? [duplicate]

Yes it does because I 'have' the physical device I 'am' the owner of the fingerprint But no it doesn't because 1=>2 : If you have my device the fingerprint is now something you can get. Which ...
2
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1answer
71 views

Smartphone fingerprint plus iris scanning for login

I have often thought about the fact that when intimate relationship partners live together they eventually tend to sneak over your shoulder and gain access to your password on either your mobile phone ...
-1
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1answer
90 views

Cheap privacy oriented cell phones [closed]

What are cheap (<200 USD) and privacy oriented cell phones ? I am looking for the phones just for calling and sms messaging. I consider phones with and without operating system, or I can buy one ...
2
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2answers
249 views

Using a smartphone off the grid

I am planning to use a smartphone as a media player and maybe to read the occasional ebook or pdf. If I were to turn off all connectivity, e.g., bluetooth, wifi, gps, then remove the sim card and/or ...
6
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2answers
169 views

What are the circumstances in which it's not foolhardy to have access to your primary email address through your smartphone?

Most web sites I use allow a password reset through email; a few require two-factor authentication with a phone call or SMS. It would perhaps only be banking or major commerce sites that would require ...
0
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1answer
316 views

Smartphone app as a U2F hardware token via Bluetooth?

Quoting from agl's article from Mar 2018: At the time of writing, all Security Keys are based version one of FIDO’s “Client To Authenticator Protocol” (CTAP1). [...T]he core protocol [can be] ...
2
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2answers
68 views

Is there a risk in rebooting a smartphone while it's connected to an unknown USB port?

I rebooted my phone while it was connected to the PC and saw a notification about a failed device installation. Looked up the text and the code, and it turns out my phone exposes a certain way to ...
4
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1answer
105 views

Is it possible to ensure that firmware doesn't keylog? [duplicate]

Not a conspiracy theory, just a thought experiment. Let's say some big smartphone manufacturer put keylogger (or any other malware) in their hardware. Would it be possible to reveal it with 100% ...
3
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1answer
8k views

MTproto Proxy Security in Telegram App

In Telegram messenger, latest update, there is an option to set connection type to MTProto Proxy. Note: There is a detailed description by Telegram team on MTProto. Now telegram officially ...
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1answer
102 views

Can malware transfer itself between iPhone and Windows laptop? [duplicate]

I have an iPhone which I suspect was hacked. So, I have restored the iPhone using iTunes on my computer. When connecting my phone to my computer, can any spyware files transfer from the phone to my ...
0
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1answer
831 views

Why fingerprint scanner doesn't work after reboot on Mi phones?

When I first experienced this I ignored it. But after some days I noticed that I have to unlock it by pattern lock or password everytime I restart the phone. After unlocking by pattern/password, I was ...
0
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1answer
231 views

Is it possible to track a SIM card even if the cell phone is turned off?

I'm wondering if it is technically possible to track a SIM card inserted in a cell phone with sufficiently charge in the battery.
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1answer
87 views

My android smartphone showing strange behaviour

Recently I am experiencing very strange behavior on my android smartphone such as: apps minimising/maximising unexpectedly suddenly it taps on other parts of the screen that I am not touching while ...
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4answers
468 views

Phone number setup for security

Several Q&As here highlight the danger of phone hacking. For example, this. In a nutshell, the solution is to NOT give your phone number, except to your bank or government. Unfortunately, that ...
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1answer
48 views

Should smartphones with AI assistants be restricted for use in office?

New Galaxy S8 & S8+ provide Samsung's new AI assistant called Bixby. This thing was claimed to upload photos and voice records to somewhere. Is it a risk for company confidential information ...
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1answer
123 views

What phone would be most private and what aspects to consider? [closed]

I want to change my phone and I would not use it for anything than calling and messaging. I would be happy to have phone the most private friendly and secure against any type of information withdraw ...
15
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3answers
4k views

Does disabling WiFi and mobile data make my phone impossible to hack online?

As I understand, a relatively outdated phone (Android 5, not updated for a few years) could be easily compromised by using security exploits through WiFi, mobile data, NFC or Bluetooth. I'm about to ...
5
votes
1answer
179 views

Is using desktop 2FA clients like Authy Desktop a good practice?

Basically 2FA relies on the idea that instead of just something you know, using a service also requires something you own. I am quite confident, especially when used on iOS (which has a better system ...
1
vote
0answers
125 views

Are there any good instant messaging applications with a good end-to-end encryption to its web application? [closed]

Whether an app like Telegram is secure or not has already been answered and it has recently been confirmed that it is not. Apps like Signal and Cryptocat have been recommended instead. But do these ...
1
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1answer
436 views

Assessing security tradeoffs with LineageOS on older Android phones

In setting up an Sony Xperia ZR smartphone manufactured in 2013 and running Android 4.4.1, I am working on understanding the trade-offs involved in loading the custom ROM LineageOS 14.1, which is ...
2
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1answer
547 views

Can a smartphone be accessed only by knowing its IMEI?

I have an old smartphone that I want to use only as a media player/portable radio/voice recorder. It doesn’t have a SIM card and it’s not connected to WiFi. I am curious however can the files on it ...
0
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1answer
138 views

Why must I register a new phone for 2FA services? The number is the same, isn't that enough?

I have a smartphone and I use 2FA to log in to several services - bank, github, world of warcraft, etc. If I were ever to lose/destroy my phone without making prior arrangements for account recovery ...
3
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2answers
321 views

I connected to an apparently password protected WiFi without giving a password

My partner and I have just moved house and we're waiting for our internet to be connected. We're living in a group of units and as you'd expect there are numerous WiFi networks, all secured... or so I ...
1
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0answers
355 views

Is there a phone/dial app could encrypt voice calls without using data network? [closed]

I know there are many VoIP apps could provide end-to-end encrypted voice communications, such as Signal, Telegram..etc. But I could not find one app could do the same by using regular non-data/non-...
7
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5answers
449 views

Can a smartphone strictly be viewed as the 'something you posses' factor for 2FA when it has no hardware token capability like smartcards?

It seems that 2FA purists seem to go for security keys (like ubikey or smart-cards) while others seem to have a more relaxt stance which even seem to include 'possession' of none physical elements ...
2
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1answer
880 views

Smartphone - Full disk encryption

For desktop computers / laptops we have software like VeraCrypt for full disk encryption. Say I have a smartphone which contains sensitive data like pictures, videos or even whole apps. I want to ...
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1answer
85 views

Can my smartphone apps that I am using be seen in the router? [duplicate]

If I am using apps on my smartphone can the network admin. see the apps I am using on my smartphone?
0
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2answers
64 views

Can someone find out what phone was used to send an email

Can someone find out exactly what phone/phone number an email was sent from? Say Doug used sallys phone to sign in and check his gmail account but never signed out then sally opened his gmail and sent ...
1
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0answers
280 views

What can prompt a voice announcing “Your phone call is now being recorded” during a phone call? [closed]

A user has reported that during a phone call to the user's SO (significant other), they both heard one or two beeps followed by a voice (English) announcing something similar to "This phone call is ...
4
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0answers
109 views

Location fixing through NFC Tag

I'm new to NFC technologies and I want to develop a smartphone app that reads a NFC tag and sends the location securely to web service. This NFC tag is in a special place and we MUST be sure that the ...
2
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1answer
301 views

Is it true that smartphones could get compromised via their baseband chip?

I read about this here. If I understand this correctly, it states that a smartphones could get compromised via it's baseband chip and it's (potentially) unsafe and closed-source firmware. I also ...
2
votes
1answer
173 views

Can my cell phone company access videos and other documents on my old cell phone?

I have my old smartphone with me, with the old sim card still inside. When I received that phone 4 years ago, it was locked by my cell phone company. However, I am not using it at the present moment, ...
3
votes
1answer
162 views

Brute forcing an OnePlus 5

I've never done a brute force before and I wanted to try it out on my phone. Considering there are 0-9 digits and 4 spaces, that gives me 10^4 combinations. I wanted to know how I can connect my Mac ...
1
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3answers
393 views

How can apps deal with phone number recycling/reassignment when sending password resets?

Instagram lets users sign up with their phone number (verified by a pin sent via text), a username and password. Should you forget your password, you can request a link sent via text to your phone, to ...
37
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5answers
7k views

Password manager: safer on laptop or on smartphone?

I want to recommend a password manager to my non-tech friends and family and help them set it up and use it. One of the decisions I have to make is whether I recommend one that works on laptops or one ...
2
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2answers
899 views

Are iPhones intrinsically more secure than updated Android phones? [closed]

If I replace my current smartphone with a Google Pixel, which would get updates pretty quickly, would I be just as safe from hackers as I would be using an iPhone? This is assuming I don't install ...
0
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1answer
64 views

Securely determine my smart phone's position (in front of the door)

I am theoretically thinking about automatically unlocking the house door via smart phone. Without the need to fiddle with the smart phone (opening an app, pressing a button). There is a commercially ...