Tagged Questions

The attribute of a system that prevents the release of data to unauthorized individuals. The ability or expectation of an individual or group to reveal information about themselves selectively or not at all

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1
vote
1answer
127 views

Is authentication through proxy sites safer?

usually in office or wherever whenever we are blocked with gmail and facebook websites,we used to browse the site with the proxy sites,we used to pass our login data through proxy sites,my question is ...
2
votes
2answers
484 views

Can cookies reveal my email address?

When I visit livescore.com, ten seconds later I receive marketing emails from gambling companies. If I don't visit this site, I don't receive these emails. Similar things happen when I visit Twitter ...
2
votes
1answer
253 views

Extracting the GPG userid from the Public key file?

Is it possible to extract userid from GPG public key? I got public key only and want to know to whom it might belong. I find one possible workaround — to publish this information on keyserver — it ...
2
votes
2answers
149 views

Website doesn’t always log me out – Privacy concern or am I overreacting?

I’ve been applying to for some jobs and use one certain careers page somewhat regularly. I’ve started to notice that I don’t always get logged out even if I do click “log out” and see a message that ...
3
votes
1answer
129 views

what is differential privacy?

Currently I have heard a lot about differential privacy but I am unable to find out what exactly it is in a non-mathematicians language. Up-till now my understanding is that it add noise to the answer ...
0
votes
1answer
165 views

HTTPS Proxy Everwhere?

I am configuring a HTTPS proxy, which I want to use for my laptop wherever I go. The idea is that since its encrypted, I should be safe from eavesdroppers, even on open wireless networks. Think of it ...
1
vote
1answer
36 views

service providers and web activity

It is good to know that ISP have legal boundaries for retaining a client's internet activity. Is it possible that individuals can hack the ISP and then have access to someone's web history activity?
3
votes
1answer
719 views

Best practice for data security on a web application

I read a couple articles on privacy/security but still cannot get a clear picture of the best practice to ensure that an attacker will not be able to access users' private information. For storing ...
0
votes
1answer
2k views

What is the risk of leaking IMEI / IMSI numbers over a network

Should I worry if a developer programmed an app to send IMEI / IMSI number of the phone where the app is installed back to him? What can an attacker do with such information?
0
votes
2answers
92 views

Sending messages using OTR & and GPG — is it detectable?

If I send messages using OTR & GPG, will my ISP or some surveillance agencies know that I'm using them? "Look, he's sending an encrypted message. He must have some important secret. Let's go ...
4
votes
2answers
85 views

Internet and Email privacy in an “internet-enemy” country [closed]

Here where I live, it is believed that all the internet traffic goes through the hands of government agencies, and the telecommunication office is actually owned by the government. Given the ...
1
vote
2answers
272 views

Idea for hiding your mobile phones' location, and still be able to place and receive calls. Any suggestions?

The diagram below is a thought experiment that could provide a certain level of privacy to mobile (smart)phone users, beyond what they currently have. Some of it is purely theoretical, but it should ...
2
votes
1answer
70 views

Preventing softwares from leaving traces in Windows | deleting the traces easily

Say I open a .doc file from my UFD. I want to avoid leaving any traces in Windows (e.g. recent files, back-up files, swaps, etc) , or at least be able to delete all easily. So in this case, I want to ...
1
vote
3answers
126 views

How to guarantee privacy on files that I store

I want to create an Android app where users from an office (typical use) can upload scanned documents to the app backend service for later use. e.g. A lawyer want to upload a sentence ...
0
votes
2answers
461 views

What information can be gained from an Email Header?

What information is present in an Email Header that can be used to track a sent mail? For example, are some of these present? Web Browser used? Operating system Type of Network (broadband/dial up)? ...
3
votes
2answers
301 views

Tor traffic correlation attacks by global adversaries

I recently came across a paper called "Users Get Routed: Traffic Correlation on Tor by Realistic Adversaries" (Aaron Johnson et al) ... which seems to be saying that adversaries (like the NSA) that ...
1
vote
1answer
294 views

What unique fingerprinting information can an iOS7 app collect?

I'm interested in unique information that is beyond typical user knowledge or control. As of iOS 7, users can easily protect local physical tracking by controlling radios (cell, WiFi, Bluetooth) in ...
0
votes
1answer
425 views

What is the full extent of information about my computer that a website can get?

I need to know what all information a random website can get from my computer, and whether a website can tell which of my two computers on the same router I'm using. I know websites can determine ...
1
vote
1answer
118 views

SSL/TLS in-memory data interception after decryption

In a scenario where a client is reading data from a server over SSL/TLS and then encrypts that data using a client-side symmetric key before saving it to the disk, how susceptible is the data to an ...
1
vote
2answers
58 views

What steps remain for a robust, neutral and surveillance-proof Internet? [closed]

Recent leaks about widespread NSA surveillance have brought privacy and security to the forefront of the public consciousness as we strive to determine best practices in governance for the Internet ...
2
votes
2answers
251 views

Skype Audio / Video Session over VPN?

Basically I'm wondering if a Skype video session along with audio could be logged (or recorded) over a virtual private network? I know whoever hosts the VPN server can log which websites you visit (or ...
1
vote
3answers
155 views

Privacy-preserving authentication with unique user identification for Web applications

Is it feasible to authenticate users such that they should be prevented from creating multiple accounts, and that their privacy is not impaired (i.e., no personal information should be revealed to the ...
-1
votes
1answer
4k views

Is my information secure when using Private Tunnel? [duplicate]

I am using Private Tunnel to do some tasks involving sensitive data like logging in to PayPal and online banking. Is my data safe or can it be retrieved by other users of the Private Tunnel service?
-2
votes
1answer
142 views

How can I keep another device from being able to see my iPhone messages and documents when they are connected to my wifi

Is there a security app I can download so I can keep another device from being able to see my iPhone messages and documents when they are connected to my wifi
0
votes
1answer
115 views

Hacking through a browser? [closed]

I was looking at this question: How can you be caught using Private VPN when there's no logs about who you are? and everyone who read it and responded seemed to be taking for granted that every ...
3
votes
2answers
573 views

Pop-ups in Private Browsing?

The new Firefox private browsing mode allows for both non/private browsing windows at the same time. So if a website pops up a new window (which will be in non private mode) can it read stored data? ...
4
votes
2answers
143 views

Privacy/Security with SSH Tunnels and QuickVPN

I currently use QuickVPN, however, it does not seem to route my web browsing traffic through a tunnel. Am I correct? It only opens up a tunnel for accessing windows shares and documents back at the ...
3
votes
2answers
395 views

When using private browsing can a website view data stored before private browsing was turned on?

If a browser has been used to visit a few sites and has active logins and then the user turns on private browsing, can the sites still access data such as cookies and cached files that were created ...
6
votes
2answers
446 views

Stolen Laptop - Next steps

My laptop (modded 2007 Macbook Pro) was stolen 2 days ago when I didn't pay attention to my backpack in a tourist spot in Europe and while I'm quite certain they won't have much use for it (the apple ...
0
votes
1answer
437 views

Sniffing 3g network Pockethound

I was wondering if its possible to prevent 3g sniffing. Its not about the security of the information sent over 3g, but being able to use your 3g without anyone able to see traffic. There are machines ...
1
vote
2answers
773 views

How secure is XMPP with self-signed SSL certificates?

I'm looking for an easy way to set up a simple IM infrastructure that protects messages in transit as well as avoids having logs in places that neither I nor someone I trust controls. I'm based in ...
1
vote
4answers
5k views

Open VPN has DNS leak

Since using www.dnsleaktest.com I have found that any VPN service using Open VPN will leak my DNS through the tunnel. I have tried and tested several VPN providers, even those who say that they have ...
1
vote
1answer
135 views

Do any tracking networks or ad networks not use JavaScript and only track based on IP address? If yes, how can they be prevented?

Are there any websites that collectively track one computer based on its IP address alone? Browser extensions such as Ad block plus, Do Not Track Plus and Ghostery modify the client side script but is ...
3
votes
6answers
225 views

Does an email signature increase security?

I'm using Thunderbird with Enigmail. It has both encrypt and sign options for sending PGP emails -- but why is an email signature needed? It just looks overkill to me! Alice and Bob can use PGP to ...
10
votes
3answers
646 views

Is Gmail showing images by default a good idea for privacy?

Google have decided to show images in Gmail messages accessed via the web, iOS and Android by default: Instead of serving images directly from their original external host servers, Gmail will now ...
0
votes
2answers
674 views

How can I protect myself against programs that turn the webcam on without the indicator light? [duplicate]

Webcams can be turned on without the indicator light: to prevent unwanted use, I wonder whether there exist applications warning that the webcam is being used, or any other kind of protection. ...
3
votes
1answer
337 views

Can a site I browse in private browsing mode tell if I visited it in regular mode before?

I've noticed when updating a blog, that sometimes refreshing the page won't actually fetch it again, because it is still in the cache. Now, even when I open it in incognito in that same browser(say ...
2
votes
2answers
480 views

How to prevent user's mobile phone position tracked

Trying to follow up this post How to trace a (mobile) phone? , the answers on how to prevent being tracked while you own a mobile phone are: You cant. (even if you use disposable phones etc) 1) Why a ...
0
votes
1answer
263 views

Metadata-free Email: How can SENDER directly, anonymously, and securely ask RECIPIENT’s mail provider to deliver a metadata-free email?

If I want to send emails to friends who use Google, Yahoo, AOL, etc., how can I currently use my local email client to send a metadata-free* email to them? E.g., is it possible to bypass my own mail ...
3
votes
3answers
298 views

Can a zero knowledge proof of voting be made using a trusted auth server (without client side crypto)?

Questions: Can one implement a secure voting system having all the features described below? e.g. without disclosing any individual's vote to the government server (or the third party), preserving ...
282
votes
12answers
49k views

Is it bad practice to use your real name online?

On some accounts I use my real name on-line (Google+/Facebook/Wikipedia/personal blog), others (Q&A/Gaming) I use an alias. My question is: Security and privacy wise, what can people do with my ...
1
vote
3answers
444 views

Can my customer's ISP trace who visited my business website?

I own a private business and a web site with a domain name hosted with Godaddy US. I live in Europe. I want to know if the various ISP of my customers in my country can find out who visited my web ...
2
votes
1answer
205 views

Evil maids in the server room [closed]

I am well aware of the fact that physical insecurity in principle means no security. But let´s say I own a root server with full disk encryption which is unlocked/booted via dropbear ssh. In which ...
3
votes
3answers
2k views

How Tor, Privoxy, Vidalia and Polipo are getting together?

I realized that these applications are frequently used together. What is the role of each software in the mission of anonymity and privacy on the web? While I understand Vidalia is a GUI provider, I ...
6
votes
3answers
334 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 ...
1
vote
1answer
4k views

Efficacy of Chrome incognito mode

I am curious about the true efficacy of the browser private mode. I did a bit of googling and stumbled upon the following page. ...
2
votes
2answers
134 views

How to create an anti-flood mechanism without leaving VPN's out?

I'm trying to protect my applications from some bots that are either malfunctioning or trying to take my sites down (lots of requests from the same IPs in the logs). Every time someone requests an ...
2
votes
2answers
73 views

ICO compliance and Google Cloud SQL

I have a basic simple question for which I couldn't find anywhere. Is is possible to use Google Cloud SQL services and still retain the regulations from ICO and other similar requirements? I ...
3
votes
1answer
434 views

How is a Tor hidden service immune to exit node attacks?

Let me explain with a nifty diagram: IP/RP <-> bunch of Tor clients/node (Tor circuit) <-> Tor hidden service Wouldn't the last Tor client in the circuit knows that the message is for the Tor ...
1
vote
1answer
115 views

what info can web bugs track?

From EFF's Web Bug FAQ(point 6), What information is sent to a server when a Web Bug is viewed? The IP address of the computer that fetched the Web Bug The URL of the page that the Web ...