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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1answer
68 views

Could the thief who stole my phone access my pics?

So my phone was stolen but it has a PW. Could the thief reset it somehow & access to the gallery or my SD cards? Personal pics of me that i don't want leaked. Plus how do i even know they've ...
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1answer
68 views

What is the risk of having an old, Internet capable phone not used for Interned compromised? (not smartphone)

I'm talking about a class of old mobile phones that are not smartphones but are still (theoretically) Internet-capable, at least via 3G. Examples of such phones include Series 40 Nokia phones or the ...
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1answer
123 views

When connecting to someones wifi without using it, can they see search history from the past?

We visited a friend who's working as a programmer. He told me to connect my phone to his wifi so he could send me a picture, however he didn't send it and I left my phone connected to his wifi for an ...
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1answer
83 views

Does connecting your phone to wifi make it trackable by cellular connection?

can connecting to wifi reveal my cellular identity ? So what I mean is say hypothetically the powers that be wanted to tap your cellular phone and your home wifi (having the isp monitor all data). ...
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1answer
45 views

Run Phone Apps in VM Anonymously and Security Risks of Virtualbox

Would it be possible to run phone apps that connect to the internet (eg. youtube, instagram, etc.) on an Android VM (or any sort of phone VM, doesn't need to be android) in VirtualBox within a host OS ...
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71 views

Phone number stolen. What to do?

It seems a friend of mine got his phone number stolen. Someone got access to his Facebook account (where they tried to post ad campaigns) and to his WhatsApp account. The Facebook security page said ...
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1answer
164 views

Is Android encryption secure? [duplicate]

As far as I know Android (Pie) is encrypted by default with some hardware-based password. But how secure is this encryption? I am not talking about password compromise, but if somebody gets my phone,...
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2answers
217 views

It's possible to make an account in mainstream social media without giving them my phone number or have a phone number that can identify you?

I'm learning about privacy and security and one of the tips everyone always talk about is compartmentalization, I'm trying to do this and get rid of my old profiles in social media (one of them have ...
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1answer
420 views

Canadian police mentioned a new line-trapping technique, but what is that?

The police in Canada are saying that there is a new technique ("line-trapping") where the scammers told a lady to call the police to confirm some fraudulent details, but when she hung up and called ...
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48 views

Are there LTE attacks besides aLTEr?

Background: I understand that most attacks on cell network-subscribed individuals rely on exploiting the poor authentication of GSM/2G comms. And if the victim is on LTE, then the next best strategy ...
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1answer
104 views

Is the security seal on samsung phones proof that the phone has not been tampered with?

Samsung phones come with a security seal that says you should not buy the phone if it is broken. Is this proof that no one has tampered with the phone? Is there some way to take off the seal and ...
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65 views

Why does Samsung access my contacts and storage if I use their store? [closed]

If I want to access the Galaxy Store on a Samsung Galaxy phone I have to agree to a set of terms (Legal information). These terms are excerpted below: All content made available to you by the ...
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0answers
57 views

Is there a way to forward unknown land line callers to a specific number in a manner similar to nomorobo? [closed]

My parents are getting up there in age and recently, my dad asked me about a message on his answering machine from "Apple" saying his account was "compromised". After having educated him on phishing ...
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4answers
10k views

Someone called someone else with my phone number

Sequence of events: I didn't touch my phone all day (at work, busy day, know it didn't even come out of my pocket, but was on). 5:20pm I get a call by a guy asking me who I am and why I called him at ...
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23 views

Who/what is responsible for Disabling vs. Enabling WiFi Calling on a voLTE-connected iPhone?

This question arises from the fact that the following WiFi-calling lookup: https://e911-reg.tracfone.com/wps/portal/home, implies that a "SIM exchange" or a "WiFi-calling provisioned SIM" can enable "...
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4answers
127 views

Could've previous owner installed tracking software on my phone, even if I changed the SIM card?

I recently bought a used mobile Android phone. Is there any way to install malware, tracking software etc. that is not on the SIM card, but on some other kind of memory disc?
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1answer
322 views

How could I block or at least detect the use of ultrasonic side channels or Google Nearby Messages API on my smartphone?

My question is about the use of ultrasonic messages that are part of the modern advertising ecosystem and are also used by the Google Nearby Messages API. When it comes to advertising, the type of ...
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0answers
110 views

What is the method police use to recover deleted data from phone memory?

I am writing a story that involves a cellphone being recovered at a crime scene. The police go through it and find all the non-deleted files and continue until a they do something to obtain the data ...
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3answers
303 views

Is it safe to help a stranger login to gmail using my phone number?

I was assisting a man at the public library who was unable to login to his gmail account. He typed in his password and was prompted for a phone number, presumably so a code to be sent which would then ...
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0answers
77 views

How to prevent phone number being searched online? [closed]

Recently, read an article about phone number being used to hack into one's account. NYTIMES-Phone hacking What needs to be done to prevent my phone number being searched? (Return invalid hyperlinks ...
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1answer
96 views

Exchange sensitive information through public chat

Is there a way to exchange phone numbers/email addresses through public chats with a person without giving them or other communication information away to all the other people in the public chat? ...
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0answers
52 views

Someone is calling from my number, and its not me? [duplicate]

My number is being regularly spoofed by someone. Today, I got 100 + calls from people claiming I called them. I answered some of the calls they are all locals from my province. I asked my provider ...
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2answers
9k views

“This used to be my phone number”

I added a new phone line and someone called claiming to be the previous owner of the phone number. He requested that I forward information a text message (He wanted me to forward 2 Factor ...
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0answers
37 views

Spoofing phone number [duplicate]

How it's possible spoofing an existing phone number? I have read something about ss7 exploitation, but i'm not sure is necessary. Can someone explain me some theoretical techniques?
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0answers
59 views

Access Android files without entering pass-code

I have a Samsung A5 from a friend. Her screen is totally broken (black) and she wants me to recover her files. The problem is that you need to enter the pass-code of the phone in order to be able to ...
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0answers
69 views

How to protect from being the spoofed number on caller ID?

The question How to protect from caller-id spoofing? focuses on how to protect oneself from incoming calls with spoofed caller ID information. This question is about how to protect oneself when ...
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7answers
11k views

How can caller ID be faked?

My late brother was contacted by someone on landline number operated by a carrier in Australia and which displayed on caller ID. I traced the number to a company and though they did call him on a ...
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1answer
216 views

Is this foreign call some kind of scam and what kind is it?

Every few days I get a call on my mobile phone from a number like 370 621 65748, which seems to be a Lithuanian number, but it only rings once and then disconnects. It happens enough to seem ...
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1answer
2k views

How secure is full-disk encryption technology on LineageOS, or Android phones in general?

We're attempting to assess the information security on our mobile devices, and information seems rather varied on the question of encryption. Is the encryption technology employed by Android-based ...
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2answers
246 views

Samsung Galaxy S7- If I drain the battery so its dead and remove the simcard, can it's location be tracked down?

I got 2 questions regarding my Samsung Galaxy S7- Q1) If I drain the battery so its dead and remove the simcard, can it's location be tracked down? I'm asking about a dead battery vs removing the ...
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0answers
289 views

Can SS7 attacks intercept SMS sent to a Google Voice number?

Hackers are able to steal 2FA SMS messages by exploiting SS7. As far as my understanding goes, this means gaining access to the SS7 system and then broadcasting a message akin to "This number is ...
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1answer
97 views

On a mobile, does using a password instead of a PIN make encryption stronger?

On a mobile, does using a password instead of a PIN make encryption stronger? What key does the phone use for its encryption? Would it use the PIN itself?
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1answer
2k views

What happens if incorrect SIM card PUK entered 10 times?

I know that if incorrect SIM card PIN is entered three times, it is erased, so there is no longer any valid PIN, but user can set up new PIN with PUK. But when incorrect PUK is entered 10 times, it is ...
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0answers
315 views

Strange inbound MMS messages

We received some strange inbound MMS messages on our Twilio account today. Our account was not compromised, as there are no suspicious outbound messages sent from our number via Twilio. We first ...
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1answer
505 views

Getting called from hidden caller ID, what are the dangers if I answer?

My girlfriend has been getting calls on her iPhone from a hidden caller ID for several days in a row now. She has not answered any of them because we figured it can't be anything good if it's hidden. ...
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0answers
127 views

Can mobile service providers use my iPhone's microphone to listen even when I'm not on a call?

So is this technically possible? Basically can the service provider somehow hack into my phone and use the microphone to hear the surrounding of my phone if they somehow have a backdoor/malicious code ...
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0answers
29 views

Most accessible yet secure way to verify a user over the phone who has an account online

We have a service where people register online and log fairly sensitive records. They might want to phone up and ask for a status update on these records. At the time they are calling, they may not ...
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0answers
38 views

How do I report scam phone calls? [duplicate]

I get scam phone calls on a regular basis. The latest one was a computer-generated voice claiming to be a security expert from Microsoft and alleging "errors and fraudulent behavior" within my ...
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3answers
369 views

What is future/alternative to SMS 2-step authentication?

Google, Facebook and most of the important websites (banks, payment sites, etc...) use SMS as the major method for authorization (in case of 2 step auth) or for controlling the account (password reset,...
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3answers
187 views

When websites use SMS as part of a password reset scheme, why do they ask for the user's phone number?

I've noticed if you do a password reset on iCloud, for example, it prompts you for your phone number before sending the SMS. Since many people already know your phone number, or it may be listed ...
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2answers
651 views

Can a SIM-less smartphone be tracked only by IMEI?

If in the phone is no SIM card, connection to cell towers is at my own behest. But what about the opposite way, can the local base stations search for a specific phone through its IMEI? Question ...
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0answers
85 views

Can (the carrier of) a caller/callee see the position of the other ones mobile phone?

Someone came to me with the following request: He/She wants to drive somewhere without the employer knowing in his/her free time. If the employer will know about the drive, it will be bad for his/her ...
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1answer
96 views

How can Huawei (or any other telecom vendor) provide verifiable security assurance?

IMHO, It is in Huawei's (and all other equipment manufacturer's) best interest to preclude \ prevent any party from remotely breaching security. All government actors monitor communications by ...
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2answers
131 views

What are the security implications of losing a paper calendar?

Assuming I have a paper calendar (organizer) with the following information on it: dates/locations where I have been and where I'm planning to go phone numbers and e-mail addresses of a few people my ...
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2answers
328 views

How to securely destroy old cellphone, to avoid personal data recuperation?

While cleaning I've found an old cellphone. This phone does not turn on, and I'm not sure if contains personal data. I would like to throw away this phone, but I'm concerted if this data can be ...
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3answers
234 views

Are DTMF tones decoded by the DTMF producer?

If I generate a DTMF(dual tone multi frequency) tone on phone A, clearly the tone gets decoded by the other phones (phone B, C...) on the call. Does the DTMF tone also get decoded by phone A? How is ...
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3answers
349 views

Is a second, “old” (dumb) phone dedicated just to receiving bank tokens as safe as “modern” (smart) phone?

Are old phones safer / safe / as safe as modern smartphones when it comes to auth-tokens / confirmations tokens? Is SMS encrypted?
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1answer
251 views

GSM - Implementing Cipher Mode Command on YateBTS

I've been studying on Yate & YateBTS source code for a while, and I was wondering why there is no ciphering mode implementation in the source!? I use the combination of BladeRF x40 FPGA and ...
10
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1answer
681 views

How secure is a land line phone call?

What are the risks of communicating sensitive information using a land line? Once my voice gets digitized does the carrier use encryption during transport? We have all heard about rogue cell towers (...
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1answer
196 views

How are USSD messages used and who could send them?

Some illegal ads started showing up on my Android phone as message boxes recently. They are said to be "USSD messages" in an app recording notifications (com.evanhe.nhfree). There is a Wikipedia ...

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