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27
votes
4answers
27k views

Is Telegram secure?

There is a new WhatsApp-killer application called Telegram. They said that it's open source and that it has a more secure encryption. But they store all the messages in their servers and WhatsApp ...
17
votes
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 ...
10
votes
1answer
102 views

Why does Android mix phone state with phone identity?

The "Phone State" permission on Android is widely requested by many apps. The explanation often given by the developer is that the app needs it in order to determine when you're on the phone, to stop ...
8
votes
3answers
6k views

How secure is Android's facial recognition?

Android supports using facial recognition for unlocking your phone. How secure is that mechanism? For instance, if someone has a good quality picture of your face, can they defeat the facial ...
7
votes
4answers
517 views

airgap a smartphone?

im looking to use my smartphone purely as a portable computer, with no network functionality in order to protect my privacy, is removing the sim cards from it enough to airgap it or do i need to go ...
7
votes
6answers
790 views

Are smartphones at least as safe as “regular” computers for personal data?

Like a lot of people, I pretty much run my life on the Web these days. I use online bill pay, I shop at Internet retailers, I keep in touch with friends electronically, &c. I'm pretty comfortable ...
6
votes
3answers
330 views

Phone Privacy for Small Business

I'm a small business operator and I'm looking for ways to provide security and reasonable privacy for my own business communications and communications of customers. All these businesses operate ...
5
votes
6answers
2k views

Can smartphone spyware work even if there is no data connection?

I am using android phone. Is it possible for spywares to transmit data even when I dont have any internet plan/connection ? Can it use some other way , say , cellular network etc ? EDIT1: SMS and ...
5
votes
1answer
258 views

Android, how to protect in case of theft

What are some steps to take into account to protect an Android phone in case of theft? Smartphones are everywhere now, before the market was dominated by Blackberry and Windows Mobile. These days ...
5
votes
2answers
4k views

iPhone full disk encryption and theft protection?

Is it possible to fully encrypt an iPhone? What cipher does it use and are there any weaknesses? How can I protect my valuable data, such as email, when my iPhone gets stolen?
5
votes
1answer
489 views

Is it safe to use public USB charging stations? [duplicate]

I'm beginning to see more and more public device charging stations — okay, they're still mostly in airports — that include USB outlets, not just regular power outlets. Are these safe to ...
4
votes
5answers
1k views

Is it possible for a phone to be transmitting even while turned off and the battery removed?

Is it technically or theoretically possible for any part of a mobile phone's circuitry to be still on and transmitting even while turned off and the battery has been removed? If so, how? I am ...
4
votes
3answers
397 views

What are the problems with bring-your-own-device related to smartphones?

What are the problems with bring-your-own-device related to smartphones? Companies see this more and more everyday, people want to use their personal devices on the corporate network or even use them ...
4
votes
4answers
218 views

Contact person by phone, when their phone might have malware

I have a problem setting where I want to contact a user by phone, and where I need to protect the integrity of the phone call as much as possible. I'm wondering about how to design the interaction in ...
4
votes
3answers
277 views

Are there any known botnets targetting smartphones?

Are there any known botnets that specifically target smartphones? What is their topology and how are they controlled? What are they used for?
4
votes
2answers
134 views

Is it possible to have a text message that I didn't send appear on my smart phone making it look as if I did send the text?

I have a client who claims that some text messages "appeared" on her phone that she did not send. I think she may be telling the truth because it seems entirely too coincidental that these messages ...
4
votes
2answers
2k views

How to secure usb data storage of Android phones?

I just found out that if I connect my phone to a laptop with a cable, the password becomes completely USELESS. So how can I protect the data in my phone from a usb cable? It's actually very easy to ...
3
votes
5answers
323 views

What are the major security concerns for smartphones? [closed]

With sales of smartphone on the ascend and PC sales on the decline, the demand for smartphones will soon outstrip the PC. What will be some of the new major foreseeable security concerns present on ...
3
votes
2answers
147 views

Phone Applications having SSL/TLS enabled behind the scenes?

Please Note: This question is slightly based on me being a tin foiled hat with the issues that has arisen from the leaks, documents, and questioning trust thanks to Edward Snowden. Thanks to adding ...
3
votes
1answer
63 views

What are some security measurements that can be taken with Windows Phone?

In corporate security it's often important to have confidential information, such as email, encrypted on your phone. How does Windows Phone (not Windows Mobile) cope with these issues?
3
votes
2answers
71 views

How can I recover files encrypted by Android ransomware?

My Samsung Galaxy Note II was infected by a virus called the "FBI virus." Fortunately, I've managed to remove the malware but my problem now is that all my files have been encrypted. How can I ...
2
votes
4answers
673 views

Tails like OS for Smartphones

In Jacob Applebaum's latest talk at the 30c3 conference, he advised all journalists to use Tails or similar OS for their laptops. Does anyone know of a similar OS or functionality for Smartphones? ...
2
votes
2answers
270 views

Can you protect corporate email on personal phones without the option of wiping all personal data?

Our company recently announced a new IT policy that requires encryption of any personal smartphone used to connect to the corporate Exchange server. As far as I can tell, they're using Exchange ...
2
votes
1answer
286 views

Can malicious phone software mount a MITM attack on a phone call?

Suppose my smartphone has been compromised and there is malicious software running on it. You can assume that the malicious software has broken out of any sandboxes and is running as root. If I'm on ...
2
votes
2answers
532 views

how can I tell if I'm under IMSI cell phone surveillance

I've recently had an encounter with the law, the details of which I won't disclose here since the case is still in court. They took my phone, naturally. I deactivated it as soon as I was released ...
2
votes
1answer
64 views

Password security on lost or stolen smartphone

I have a number of apps on my smartphone that store the passwords - facebook, mail, etc. So say the phone is lost or stolen and the finder decides he wants my passwords - what can he do to get them, ...
2
votes
2answers
100 views

Actual issue? Phone switches from 3G to router makes session switch from https to http

I heard that a security issue exists in some cases when a mobile phone has: Connected to a website via https via 3G Connects to a router I'm told that that in this particular scenario the router ...
1
vote
1answer
154 views

Why Google and smartphone manufacturers don't care about updates?

For Windows, Firefox/Chrome, Java, Flash critical updates are issued each couple weeks, and as far my understanding goes, it is REALLY bad not to install them ASAP. For my 3 year old Samsung ...
0
votes
1answer
260 views

Is it possible detect a device using a 3G connection?

Someone has a hidden smartphone and are using the internet in a 3G connection. Can I find where is he? Maybe using a signal detector. find who is he? Maybe know the MAC number. just find if ...
0
votes
1answer
81 views

Public Key Authentication

Is there another way to verify someones public key without a CA signing it? A challenge-response authentication including some sort of UID of the smartphone? Smartphone A generates asymmetric key ...
0
votes
1answer
80 views

VPN using SmartPhone Location

When you VPN using your smartphone as a hotspot, can the VPN tell your location like it can when you VPN over a wireless connection hotspot?
0
votes
0answers
765 views

Is it safe to connect mobile devices to rental cars? [duplicate]

Many modern cars feature Bluetooth connections and USB ports that allow passengers to connect them with mobile phones and digital music players (and smartphones, which serve as both). Is it safe to ...
-2
votes
1answer
89 views

How do i defeat cell phone spyware? [closed]

I've bought a new phone, where one of its products can be activated by receiving a phone call. If someone uses a spoofed SIM card - with a number I recognize - I'll likely answer the call. Are there ...
-3
votes
2answers
119 views

What makes iOS more secure than other phone OS [closed]

Let's start off with an example. Here in Canada, credit card companies cannot upgrade you credit card limit. You need to make a request, that will then get analyzed and then, depending on your status ...