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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How can I spoof a phone call and make it appear to come from another phone?

I'm performing a penetration test against a company. Part of my social engineering procedure is to contact the IT department and try to convince them to that I'm an employee in the company and get ...
13
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2answers
27k views

Is it possible to make a phone call appear to come from another phone, even to the network provider?

Quick Question Is it possible that I could call a mobile number, but have the call forwarded through another number active on a different phone that someone else has? I have had unlimited access to ...
17
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3answers
2k views

Could my bank's two-factor authentication be hacked?

When I attempt to log in to my bank, an SMS code is sent to my phone. I then type this nine-character code into the bank's Web site, to login to my account. Is this vulnerable to attack, without ...
14
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3answers
7k views

Are phone calls on a GSM network encrypted?

When I make a call on my cellphone (on a GSM network), is it encrypted?
3
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1answer
103 views

Windows Phone and Hardcoding Values

Let us say that I have a Windows Phone application. If I hardcode a private key in the Windows Phone application, can people extract it once the application is released to the public on the Windows ...
4
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1answer
120 views

Voice Call Safety

When i was dealing with an assistant of my bank through mobile call, she asked me to insert my bank login code after a beep. I was wondering if this procedure is secure against a malicious agent who ...
17
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2answers
38k views

Can Android phone running without SIM card be tracked (localized) by police?

I am running an Android phone without a SIM card. I am using it for web surfing. Can the police localize my phone using the cell towers (BTS)? In other words, I know Android phones emit radiations ...
4
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2answers
153 views

Options for simple phone verification with pin delivery

My website needs to verify phone numbers in order to ensure that customers claiming a business actually work there. The service calls and gives the customer a pin which they put into the site. Many ...
5
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3answers
334 views

Mutual authentication for humans

Is there any way for two people to securely authenticate each other without access to any special software (like PGP)? For example, when speaking over the phone or by sending SMSes to each other or ...
-1
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1answer
214 views

Is There a Premium Rate Phone Check? [closed]

Is there a way, online or otherwise, to check if a phone number is a premium rate number which will charge my bill? It seems there should be some way to do this with certainty. Can phone numbers be ...
6
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2answers
303 views

Can a SMS recipient charge any arbitrary fee to the sender without approval?

I received an email from a prospective "client" in broken English. We have been going back and forth about services for a while and he wants me to text him. Is it possible for him to charge me some ...
5
votes
1answer
128 views

Symbiote Counter-Attack Detection

I saw this video on YouTube about hacking Cisco phones (and other embedded systems) and I was overjoyed when the presenter not only hacked, but presented a security solution. Intrigued, I started ...
6
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5answers
2k views

How should I safely display my phone number on my Website?

If I display my email address on my Website, I would probably receive a lot of Spam, so I can set up a contact form instead. If I want to display my phone number, how can I prevent unwanted phone ...
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3answers
2k views

How can hotels securely receive your credit card details (for a custom, one-off payment)?

A hotel belonging to a large chain (400 hotels in 60 countries) has just requested me to send my credit card details via standard (unsecured) email. I have negotiated a deal for accommodation with ...
44
votes
10answers
11k views

If someone asks to borrow your phone to make a call, what could they do?

A stranger walks up to you on the street. They say they lost their phone and need to make a phone call (has happened to me twice, and maybe to you). What's the worst a phone call could do? Let's ...
3
votes
1answer
817 views

Does a TMSI change often enough to prevent tracking?

A company called Path Intelligence has a product called Footpath which uses the TMSI, WiFi MAC address, and bluetooth MAC address to track phones as they move through stores. However, I don't see ...
-1
votes
1answer
407 views

Extremely suspicious phone call — what to do? [closed]

Two days ago, I received a call. Someone with a female, possibly asian voice asked "are you using your computer in internet right now." I said "yes", then asked "who are you?". At this point, they ...
3
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2answers
35k views

Can a SIM card be tracked without cell phone and battery?

I have a SIM card alone without cell phone and battery. Can it be be tracked?
7
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2answers
2k views

How do I protect my Gmail account when accessing it via an Android smartphone?

I have a Gmail account that I also access via an Android smartphone. The mail account could be used to reset passwords for other online accounts, so I want to tighten up the security around this ...
0
votes
1answer
1k views

Are phone calls normally recorded? [closed]

A person borrowed a cellphone and made a prank call and the following day the police contact the owner of the phone. The constable said "I can pull your call logs and you would have no say in it". My ...
2
votes
1answer
206 views

Which mobile phone OS implements or plan to implement data protection using keys derived from passwords per NIST SP800-132?

NIST has released Special Publication 800-132: Recommendation for Password-Based Key Derivation which is meant for protection of stored data using encryption keys derived from user password. This ...
1
vote
3answers
3k views

Tracing an IP from a mobile broadband ISP

My honeypot caught a hack attempt from an IP that was issued by Three Mobile Broadband (UK). My immediate thought was that most probable explanation was that the user was in the UK and had his ...
28
votes
5answers
14k views

What is preventing us from sniffing the mobile phone communcation?

I'm learning wireless penetration testing. It really is amazing. But it made me wonder, what about mobile phones? They are also means of wireless communication. So, our entire voice must be in the air ...
3
votes
2answers
187 views

Why is location very highly secured info on smartphones?

I can understand that an app needs explicit permissions to access it if the smartphone has a permission system (e.g. Android, Windows Phone). But how does location get so much intention than others ...
25
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4answers
11k views

Can A Powered Down Cell Phone be Turned On Remotely?

I know this is tin-foil hat fodder, but at least one judicial opinion (http://www.politechbot.com/docs/fbi.ardito.roving.bug.opinion.120106.txt) referenced a bug that could track/listen in on the ...
31
votes
5answers
41k views

How to trace a (mobile) phone?

Even since growing up, I've watched films in which the "bad guy" is repeatedly tracked down when they call the police or FBI or police force de jour. They always have "about 30 seconds". Regardless ...
3
votes
2answers
2k views

SMS / voice call interception with a fake base station

This answer to a similar topic describes in a detailed way how vulnerable SMS and voice calls are in terms of decryption. In order to do so, an attacker needs to set up a fake base station located ...
8
votes
1answer
18k views

How to spoof a cell phone tower (cell site, base station) — homemade IMSI-Catcher

An answer to a recent question has given me an idea for a school project (security CS program). Also, an active attacker (with a fake base station) can potentially force a mobile phone to use ...
39
votes
6answers
11k views

How hard is it to intercept SMS (two-factor authentication)?

A lot of two-factor authentication mechanisms use SMS to deliver single-use passphrase to the user. So how secure is it? Is it hard to intercept the SMS message containing the passphrase? Do mobile ...
1
vote
1answer
353 views

How should I block BIS connections from accessing my Exchange Server

BIS is a technology from Blackberry that allows end users to connect to an Exchange server without a BES server. The problem is that BES asserts a security policy on the devices, and BIS does not ...
5
votes
3answers
4k views

What makes the Blackberry device and network more secure?

One of Blackberry's strongest assets is the "network" that it uses. Can someone explain, or link to technical information that covers what this secure network is, and what it does better than the ...
5
votes
1answer
566 views

Trying to prevent Cisco toll fraud

A little back story on the setup first; We have a Cisco VoIP setup at our remote office(where I'm at) and the main CCM/CCX/Unity setup is at the parent company across the US in Connecticut. We have ...
21
votes
2answers
1k views

Security implications of rooting Android

My Android smart phone has fancy features that I can get only if I root it, e.g., free-wifi tethering or Cisco VPN (with group name/password). However, the procedure to root my phone makes me ...
14
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3answers
406 views

Android security without updates

I have an android phone which, like many others, has quickly become unsupported and is not receiving any updates. At the same time there are publicly available exploits for privilege-escalation ...
2
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2answers
453 views

How secure is Goodlink for mobile phones when compared to Activesync?

Some of our more technical users are arguing to use Activesync for their phones, while the corporate standard is limited to Blackberry and any device that supports Goodlink. One argument is the ...
12
votes
2answers
1k views

Protecting cellphones from USB attacks (a.k.a. Juice Jacking)

We have several smartphone with encrypted data on them (BES, iPhone, Android) and want to prevent an unauthorized person from downloading information from the device via USB. The visual assumption ...
5
votes
2answers
530 views

Mobile phone security eavesdropping based on data transfer

is there an easy way for particular governmental organizations (especially in countries where freedom of speech is a problem) have some technology where they can easily eavesdrop on cellphone internet ...
6
votes
2answers
738 views

How can I protect my phone voicemail from being hacked?

With the News of The World Phone Hacking scandal spreading globally amidst allegations that as well as celebrities, victims of September 11 and other major events in the news have had their phone ...
4
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2answers
456 views

Cell phone voice mail hacking

The news has been filled recently with the allegations that News of the World employees hacked into the voicemail inboxes of celebrities and crime victims. What flaw was exploited to accomplish this, ...
23
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9answers
8k views

Do secure phone lines exist?

I could be out of context here about security, but , I would like to know if phone lines or phone calls over VOIP could be made secure . I know that Skype and other VOIP service providers have to ...