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Questions tagged [phone]

A telephone, or phone, is a telecommunications device that permits two or more users to conduct a conversation when they are not in the same vicinity of each other to be heard directly.

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1 vote
0 answers
106 views

Am I being tracked or something? [closed]

A guy asked to borrow my phone to make a call. Instead of giving him my phone, I asked what the number was, put it on speaker and made the call. Someone answered but barely talked, she sounded maybe ...
Deemah67's user avatar
1 vote
0 answers
80 views

Tracking Apps Spyware [closed]

Looking on how to best advise someone who continues to have phone hacking issues. She changes devices, carriers nothing stops it. Local law enforcement have been no help. Very detailed personnel ...
user302195's user avatar
2 votes
1 answer
489 views

Apple Mail versus GMail app content security

I am trying to determine if there is a benefit to using the GMail app over the built in iOS one when it comes to security. I know that both store data locally on the phone, but the question is whether ...
Justin Pihony's user avatar
0 votes
1 answer
117 views

Can an earpiece transfer virus from one phone to another? [duplicate]

I gave a friend my earpiece and her phone had audio issues prior to that, I took it back and connected it to my phone and ever since I did, my audio stopped working. Now if I try to do anything that ...
Benita Patrick's user avatar
1 vote
0 answers
99 views

Why does Amazon make you enter specified digits upon calling their customer service switchboard?

If one calls the Amazon customer services number, a robotic voice asks one to enter three numbers. Along the lines of “to be connected to a customer service associate, please press [XYZ]” (where [xyz] ...
TylerDurden's user avatar
2 votes
2 answers
410 views

Does Signal store mobile phone numbers server-side in plain text?

Does Signal (the company) keep or ever have mobile phone numbers in plaintext (on any form of server-side storage)? I searched the web and couldn't find an official statement/documentation/answer/code/...
Adam Monsen's user avatar
1 vote
0 answers
47 views

How to deal with unused smart phones safely [duplicate]

I have several old smart mobile phones that are not going to be used anymore, most of them have run out of battery and I cant remember whether I have any sensitive data on them. How should I deal with ...
konchy's user avatar
  • 111
0 votes
0 answers
29 views

Is it possible to trace a virtual number back to its service provider? [duplicate]

If a virtual number is only used to send and recieve messages, is it possible for somebody who know the number to trace it back to its service provider and somehow seize the number? (perhaps buying ...
Nuwanda's user avatar
  • 101
1 vote
0 answers
105 views

Is Android SOS being used as privilege escalation or settings bypass?

I have been getting random SOS countdowns triggered on my phone. Every time this happens, a pop-up appears telling me that unknown numbers have been temporarily unblocked. The most recent instance was ...
Miles's user avatar
  • 111
3 votes
0 answers
253 views

Can a bad guy ever get access to my gmail account using ONLY the 2fa app or ONLY the recovery phone (plus username)?

Let's say X is a malicious person. Let's say I have a gmail account with a recovery phone and with 2fa enabled. Let's say X knows the username but not the password. X doesn't have any other ...
capet's user avatar
  • 130
2 votes
0 answers
155 views

Is a mobile phone number in itself an information that can be utilized by hackers etc? [duplicate]

I recently installed Tinder, and I saw that the app warns about sharing your phone number to avoid being hacked. I also noticed certain obviously fake profiles pressing for getting a phone number or ...
smith's user avatar
  • 121
1 vote
2 answers
4k views

Do car Bluetooth FM transmitters allow others to eavesdrop on the hands-free phone calls that I make?

My car's entertainment system is only able to play audio CDs and receive AM/FM radio. I am thinking of getting a Bluetooth FM transmitter so that I could use my car's speakers to play my smartphone's ...
Flux's user avatar
  • 913
1 vote
2 answers
210 views

Prevent device from seeing WiFi networks for geolocation

This is something I was wondering while trying to improve my privacy. Mobile devices tend to use geolocation based on WiFi networks they find available (thanks to evil Google...). One could use ...
user2173353's user avatar
0 votes
1 answer
341 views

Can my infected phone’s hotspot infect my outdated computer?

Knowing that anything is possible for the many ways a hacker can break into a system, is it also possible that if I have an infected phone acting as a hotspot, my outdated computer could get infected ...
Quentin Bolton's user avatar
3 votes
3 answers
737 views

If I smash this phone into a million pieces is it secure?

This phone that I am using has some very sensitive info on it. I am wondering if it will be secure if I take a hammer and smash it into many pieces, and if I take the pieces and throw them out at ...
user avatar
1 vote
1 answer
104 views

Is it worldwide standard that incoming phone call numbers can be faked?

I am living in Germany and here attackers can fake the incoming phone number when you get a phone call. For example you can get a call from 110 (police telephone number) although it is not the police ...
zomega's user avatar
  • 145
1 vote
0 answers
3k views

How does phone tracking by police work?

For android phones in India can police get a phone's IMEI number just by using that phone's number? also suppose if a phone was moving around within few miles radius for few days and it was turned ...
Ezio's user avatar
  • 35
0 votes
1 answer
172 views

Older Phone Models Less Secure?

Are older phone models inherently less secure than newer ones assuming you're still able to run the latest software? I am pecifically curious about older models of iPhones (e.g. ~2015 ish)
stk1234's user avatar
  • 202
7 votes
0 answers
5k views

Are there any security benefits to enabling the PIN on an eSIM?

For physical SIMs, I'm aware of a number of security benefits to enabling the SIM PIN, because for an attacker with access to a lost or stolen SIM, a PIN prevents transferring the SIM to a different ...
Lachlan Hunt's user avatar
0 votes
1 answer
195 views

How is the stream cipher key shared on GSM?

I read that phones encrypt communication (GSM as implemented in 2G,3G..) - particularly voice as SMS are unencrypted - using a stream cipher. Symmetric Stream ciphers use the flip-flop machinery to ...
Mah Neh's user avatar
  • 35
2 votes
0 answers
123 views

Receiving phishing text messages

I get a phishing messages on SMS every now and then. I'm not sure if it's from anyone that knows me. What information can I get about the sender of the SMS?
Elec Hill's user avatar
0 votes
0 answers
158 views

Is it possible to inject code using physical memory access to jailbreak phones?

Is it possible to inject code into RAM using physical access? For example desolder the RAM chips, solder something between the original RAM chip and the phone motherboard, and use that to directly ...
userdatagram's user avatar
0 votes
2 answers
528 views

Can dumb-phones be turned into bugs?

Is it possible for an advanced attacker to use a dumb-phone (such as, say, Nokia 105) to spy on its owner through the microphone?
Callaeschrus's user avatar
0 votes
0 answers
53 views

Do you need physical access to hack a BT land line before an outgoing call is made (dialing tone)

Do you need physical access to hack a BT land line before an outgoing call is made (dialing tone)? I understand if you have physical access you could just put something in another phone socket. But, I ...
user avatar
1 vote
0 answers
296 views

What equipment would an attacker need to infect a SIM card?

I'm aware that SIM cards can store malware according to this question but what equipment would be needed to do such an attack? For example, would you need a Computer and a SIM card reader or could it ...
verynormal's user avatar
1 vote
3 answers
1k views

Effective ways to hash phone numbers?

Suppose a company wants to implement 2FA for it's users using phone number OTP system, but does not really want to store their phone numbers as it could get breached and phone numbers are considered ...
Abhishek Choudhary's user avatar
0 votes
1 answer
568 views

What is the impact of someone accidentally getting my IMEI number from my Android phone? [duplicate]

I have a concern regarding how risky it is if someone knows or has the copy of my 2 IMEI numbers. As we all know, on Android phones, the IMEI are at the back cover of the phone like a sticker. So, my ...
Wiljune Peroz's user avatar
2 votes
1 answer
190 views

Is there any truth to the (to me) bizarre idea that you can "track" a phone call better depending on how long it goes on? [duplicate]

I have heard many prank calls from ~2004-2007. In many of them, completely different people all mention the same thing about them "tracking the pranker", clearly in an attempt to scare the ...
D Nowell's user avatar
0 votes
0 answers
218 views

How can you spoof you caller id but not using a voip (your carrier instead)?

My research: I found this security stackexchange post but it didn't answer my question. I know that you can do similar things using astresik with voip provider. I came up on o blog that explain that ...
s0n0fj0hn's user avatar
0 votes
0 answers
119 views

Is there some way to "fully delete" received and sent SMS messages (and any other "deleted" data") on my cellphone?

I have a cheap cellphone bought about ten years ago. It has a physical SIM card. I have in-phone "deleted" all sent and received messages, but very strongly suspect that these are still ...
C Pose's user avatar
  • 1
1 vote
1 answer
409 views

Is there a thing as a small bag which BOTH blocks signals AND sound for securing a mobile phone on the go? [closed]

I've been hunting for this for a long time. I've been able to find "Faraday" bags that (allegedly) block signals to/from the surveillance unit (phone), but they never mention anything about ...
L. H.'s user avatar
  • 11
1 vote
2 answers
989 views

Is it normal/safe/justifiable that a bank asks me for my full login details (account id and PIN) when calling via mobile phone?

I am calling my bank via mobile phone (in Germany) and the electronic voice asks me to type in my account access id (via the number pad), and like-wise, type in my account PIN, all the numbers, not ...
M. Rumpy's user avatar
  • 111
12 votes
2 answers
2k views

Any plans/research for SSL-like method in telephony?

I have recently read about attacks using Caller ID spoofing technology. Criminals used it to impersonate bank or police employees and asked to install malware or transfer money to a given account. A ...
dzieciou's user avatar
  • 233
1 vote
1 answer
314 views

WhatsApp message from own number + 1 [closed]

I got a WhatsApp message from a number which is exactly mine but the last digit is increased by one (5 instead of 4). It was just a "Hi" and and a photo of a random guy. I asked who it is ...
flappix's user avatar
  • 111
1 vote
2 answers
714 views

Is the "trusted phone number" inside your Apple ID a security flaw?

Imagine your iPhone gets stolen or seized. Inside this iPhone is your SIM-Card. That SIM-Card is your only SIM-Card and it is enlisted as "trusted phone number" in your Apple Account. The ...
shellinabox's user avatar
2 votes
0 answers
156 views

My iPhone XS called someone today without my interaction

Yesterday, I was sitting at the computer and noticed that the phone is making the "calling" sound (that usual beep). I unlocked the phone and did not see any activity like I would call ...
Ionică Bizău's user avatar
0 votes
2 answers
220 views

What makes this cellphone (and the weird instructions) so privacy-friendly?

I stumbled upon this weird product in a webstore primarily selling Cannabis-related products (not the actual herbs): https://smoketower.com/nyheter/Anonym-3310-mobiltelefon I've manually translated ...
M. U.'s user avatar
  • 1
1 vote
0 answers
300 views

Can I determine whether my phone probes base transmission station (BTS) without a SIM card?

This question is related to another inquiry on this site: Can Android phone running without SIM card be tracked (localized) by police? Accepted answer claims that: Without a SIM, your cell phone ...
Luntri's user avatar
  • 162
0 votes
0 answers
1k views

How can I test if/how STIR/SHAKEN is working on my incoming calls? Both for detecting spoofed caller ID AND [bad sources]

How can I test if/how STIR/SHAKEN is working on my incoming calls? Both for detecting spoofed caller ID AND calls from disreputable (NON-'A' attestation) service providers/carriers/sources. I'm ...
WHO'sNoToOldRx4Covid-CENSORED's user avatar
2 votes
1 answer
394 views

Can a SIM card lock be circumvented?

If so, how would one go about that, and realistically, how long would it take? Is there something we can do proactively to make this more difficult? This seems more relevant than ever since we would ...
gloomyfit's user avatar
  • 133
3 votes
2 answers
787 views

Does replacing the SIM card mitigate any threats after a serious data breach?

I recently heard that a telephone company (a mobile network operator) was hacked and lots of data was stolen, maybe affecting up to a million customers. It sounds like the leaked data is already ...
reed's user avatar
  • 15.8k
2 votes
2 answers
2k views

Can an android phone that is flashed to a trusted safe rom still be malicious?

I'm in the market for a new phone. The cheapest ones with decent specs are from China. Unfortunately I've read articles of phones sending data back to China for spying purposes. The phone I am looking ...
Terence Chow's user avatar
17 votes
3 answers
4k views

Real life examples of malware propagated by SIM cards?

The laptops in use at my company have SIM card slots, which are actually used by some of our users. I am threat modeling our devices, so I was wondering if there are any realistic exploits that can be ...
lauraaaaa's user avatar
  • 173
0 votes
2 answers
5k views

Does factory resetting a phone erase spyware?

I thought that there was spyware on my phone so I did a factory reset. Would the spyware be gone or it will still exist even after a factory reset?
10E_13_ Bipin's user avatar
4 votes
1 answer
5k views

What are the privacy implications of the "Your Phone" app on Windows?

I'm trying to decide whether or not to use the Your Phone app on Windows, and not finding much information on it. It requires a Microsoft account, but I don't really see why that should be necessary ...
user541686's user avatar
  • 2,562
0 votes
0 answers
318 views

Did fraudsters access my SMS verification code?

A very strange sequence of events resulted in some unknown person gaining access to my online banking (with CIBC). I've since recovered my account, but I am very eager to understand what happened: I ...
Gershy's user avatar
  • 101
1 vote
0 answers
170 views

Retrieving a No Caller ID phone number? [closed]

I got a call from an unknown number, more specifically, a no caller ID number. I’m not the guy who gets a lot of calls from a no caller ID phone number, and usually, when I got one is typically the ...
User3298137412's user avatar
1 vote
0 answers
256 views

Is it reasonable to type a bank password in a phone call to the bank? [duplicate]

Recently my friend called their bank (via a normal phone call) to perform an operation with her account and she had to type her password during the call. Everything worked fine, the operation was done ...
Pedro A's user avatar
  • 133
3 votes
1 answer
2k views

'Removing' telecom provider from my phone

Baseband Processors have very weak overall security(closed-source firmware, no audits etc.) It also gives the telecom operator very high privileges on a mobile device. So, now I use 2 phones. First ...
user's user avatar
  • 275
0 votes
2 answers
1k views

Danger of making calls after unknown random number called through

I recently received a call from a number I didn't know to my mobile, answered it anyway. I didn't say anything, when it is a number I don't know I let the other person speak first.. after a few ...
Coderxyz's user avatar
  • 550

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