1
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2answers
312 views

Ip4v Rainbow Table [closed]

a friend challenged me to find out the ip from the new web server he uses. Is there a rainbow table or something similar with all possible adresses or are 4 billion numbers to much for a normal ...
1
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3answers
140 views

Concerned with Tails vulnerabilities

Regarding this: http://www.forbes.com/sites/thomasbrewster/2014/07/21/exploit-dealer-snowdens-favourite-os-tails-has-zero-day-vulnerabilities-lurking-inside/ Apparently, even the version of Tails ...
1
vote
1answer
1k views

Is a firewall an access control list?

I want to know if a firewall is considered an access control list (ACL). I know there are other types of ACLs, but am specifically interested in knowing if a firewall is an ACL. Edit: It appears ...
1
vote
4answers
388 views

untangle server at work place privacy

When I am browsing in an environment where Untangle server is installed, can the network admin track everything I do? for example: Skype chat messages Personal emails (Gmail, Yahoo)
1
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2answers
204 views

Why is filling up at the gas pump require a quick scan of the Credit/Debit card?

Always wondered about this. I had a friend tell me it's to make sure your information can't be stolen as easily on the credit card, but I will admit I am a bit skeptical of his claims. At most gas ...
1
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5answers
490 views

Why not use weak passwords?

In a specific situation: online stores that cannot possibly store payment details because you pay using paypal, but require registration. What reason is there to use good passwords here? Breaking ...
1
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3answers
123 views

Is it possible to have a high confidence that a password is not being reused?

Have a few thoughts on the topic, but the general gist is if a user inputs a new password, is it possible to have a high confidence that a password is not being reused elsewhere? By elsewhere, I mean ...
1
vote
4answers
987 views

Are Truecrypt volumes safe from the government agencies? [closed]

I have some Truecrypt volumes stored on my USB drive and I would like to know if they are safe from being cracked by the FBI or any government agencies? Some people say Full Disk Encryption will ...
1
vote
3answers
279 views

Unknown hijacker/popups on the browser

I was cleaning my father’s laptop which was recently infected by a fairly tenacious piece of malware. It hasn't given any great clues as to what it is named or anything of that sort and thus far ...
1
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3answers
2k views

What is the correct way to make a password salt?

I've made the below function to make a completely random 64 character long hash function password_salt($password){ $salt = hash("sha512", mt_rand(1,100000) . strtotime("now") . $password . ...
1
vote
2answers
8k views

Why is my browsing history visible outside my network?

Whatever I and my family members do at 'Home PC' is visible in the history in Google chrome in my 'Office PC'. The two networks are entirely different! I saw all websites visited on our home PC by my ...
1
vote
1answer
537 views

What is LFI vulnerability

LFI: Local file inclusion. After going through many tutorials I have two things I can/t figure out: checking the vulnerability: I don't understand what makes a website vulnerable or not. For ...
1
vote
3answers
12k views

Is there any solution for block the HTTPS traffic using URL filtering?

The URL filtering can block the HTTP traffic but not the HTTPS traffic in Internet Explorer. For example, the website http://www.facebook.com is blocked by the URL filtering while the ...
1
vote
2answers
161 views

Can non-https assets be tampered with?

Why load assets such as images, javascript, css etc, over HTTPS? Is it possible for these assets to be tampered with if I use HTTP? The only way I could conceive of tampering with HTTP loaded assets ...
1
vote
2answers
84 views

How to detect changes to client

I am developing a Java game and money is involved. As such, I want to prevent people from modifying the client if at all possible (I'm a game designer, not a security expert). I know that it is ...
1
vote
1answer
535 views

DSA Generates different signatures with the same data [closed]

I'm using the example given in msdn article about the DSACryptoServiceProvider Class. The problem is that I get a different signature each time I run the code. I tried OpenSSL and didn't get this ...
1
vote
2answers
1k 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. ...
1
vote
3answers
658 views

Is applying AES multiple times safer?

The KeePass security help page talks about preventing dictionary attacks To generate the final 256-bit key that is used for the block cipher, KeePass first hashes the user's password using ...
1
vote
3answers
2k views

Are there any web application security standards?

Are there any web application security standards that I can use as a baseline for the security related requirements for a web application, web service, and for applications supported/hosted by third ...
1
vote
6answers
280 views

Does including the username in a password make it less secure?

Many registration forms prevent you from choosing a password that includes your username. Is it a reasonable restriction from security standpoint? I can see that if your username is "foobar" and ...
1
vote
1answer
544 views

How could `iptables -F` lock me out of the server? [closed]

I was just configuring IPtables and whilst doing so, had the default chain policies set to ACCEPT, but when happy with the generated rules I changed that to DROP for all chains. I did not run ...
1
vote
2answers
4k views

How do WPS (Wi-Fi Positioning System) databases have the MAC Addresses of the networks? [closed]

It is known that another way to determine the position is through WPS (Wi-Fi Positioning System). This uses the Wi-Fi networks available in the area, if any, to dermine the position. But according to ...
1
vote
3answers
2k views

How can this web page access the USB? [closed]

A friend bought a "smart" headset (working with voice commands). I had to install a software on Windows to be able to configure this headset. After downloading the software from the page, this page ...
1
vote
3answers
850 views

How to expose a client's real IP address?

As a forum administrator, how can I find a client's real IP address? Are there any third party tools or weakness that expose the real IP address?
1
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1answer
229 views
1
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2answers
2k views

DDoS — null route everything not approved

Is it possible to create a route on your internet router which routes traffic unknown to null. So you basically dont even let traffic route into your firewall unless its approved? Can this help detour ...
1
vote
2answers
566 views

Can AES-256 encrypted data be changed?

I have a file that supposedly contains AES-256 encrypted data. The file was created using a proprietary program that claims to use AES-256. I have tested decrypting the file with an open source ...
1
vote
4answers
637 views

Custom programming language, and translator that translate it to Java to make more difficult to get source

I want to make my game extremely hard to decompile. So I've come up with the idea of a program which will contain my game's code, coded in a custom language, and which will translate that code into ...
1
vote
1answer
2k views

Man-in-the-middle attack over an encrypted channel

I learned recently about man-in-the-middle attacks and came up with this question. Let's say we have two computers who try to communicate over the network. Each computer has an encryptor and a ...
1
vote
2answers
525 views

How do I ensure that a VPS host will keep my information private?

Basically, I want to use OpenVPN on a VPS to browse confidentially. However, I don't know much about VPS hosters and to me, it seems to be a hard choice because there are so many. However, I think ...
1
vote
4answers
1k views

certificate usage for signing and encryption

I have a question for basic operating with certificates in emails and pdfs. Im familiar with public key cryptography. The scenario: In my scenario I want to send a confidential email to a person A ...
1
vote
5answers
1k views

Good ways to prevent spammers from registering [duplicate]

Possible Duplicate: Is there a true alternative to using CAPTCHA images? Since everyone hates captchas what are good alternatives? I'm looking to prevent the automated creation of accounts ...
1
vote
2answers
182 views

Wifi box produces three SSIDs?

While using a friend's wifi, he said I should use his SSID, let's call it XYZ's Wifi. When I started my Macbook Pro, three SSIDs came up. Two were called XYZ's Wifi and the third was called XYZ's ...
1
vote
3answers
810 views

Web Application - Cookie Expiry

We are using a web application on cloud. I need a small clarification. We are using Perl with Apache. I see a following issue here for the below scenario. I need some inputs of whether this is most ...
1
vote
2answers
264 views

Authentication without saving password

Are there any security problems with following authentication protocol? when user creates hers account, she provides her username and password. I store the username and blowfishEncrypt(toEncrypt = ...
1
vote
3answers
2k views

SQL — using string concatenation, how can I exploit this procedure?

I have a simple SP create procedure [dbo].[test] @str varchar (100) AS BEGIN select * from [AdventureWorks2012].[HumanResources].[Employee] where JobTitle like '%' + @str +'%' END GO Given this ...
1
vote
2answers
433 views

How to verify correct, secure and test setuid?

I've been looking into setuid vulnerabilities. Particularly, I am looking on OS X (10.5+) but other modern *nix distos apply as well. For example, I found a world writable suid file installed by a ...
1
vote
3answers
367 views

For what do I hash user passwords with PDKDF2 when the user data is stored in the same database?

I'm hashing the passwors of my users with PDKDF2 right now. A user can gain access to his account with his password. When the user is logged in he can edit his personal information and do other stuff ...
1
vote
3answers
5k views

Building a secure server with CentOs [duplicate]

Possible Duplicate: Hardening Linux Server I recently started to manage my own server with a cloud-based server. Recently I got hacked somehow and the server was used for phising. On the ...
1
vote
1answer
369 views

MySQL/CGI: password in C source file unsafe?

Is this line bad practice from a security stance? connect = mysql_real_connect(connection, "host", "user", "password", "database", 0, (const char *)NULL, 0); If so, what solution would you use? ...
1
vote
2answers
2k views

HTTP TRACE vulnerability discovered - what should I do

First, why is HTTP TRACE method allowed on a website Isn't it a bad thing for web server or its users' security? Second, when I run the following PHP script via my browser... <?php $service_port ...
1
vote
2answers
9k views

How to connect sensors such as Snort to AlienVault SIEM?

I want to connect some sensors such as Snort and OSSEC to AlienVault SIEM. How can i do that?! Is it possible to send logs via syslog?
1
vote
3answers
1k views

What is the value of vendor specific security certs vs. general ones?

Let me preface my question by saying that I understand that experience is generally more valuable than certifications when it comes to the IT profession. Having said that, are vendor specific ...
1
vote
2answers
657 views

AVG Website Scan, Chance of 'Potential Threat'?

In a recent question I asked about investigating websites for viruses. The answers were very helpful, I ended up using the AVG website scanner. First I used it on our website and found it was clean, ...
1
vote
3answers
3k views

How does a DOS attack work when attacking a single server with a single client?

How is it possible to make a DOS attack from a single computer? Let us assume two computers, one acting as server and the other as client. Both has 100/100 mbit bandwitdh. How can then the client ...
1
vote
3answers
206 views

Information Security standards in corporations

I'm developing a web based application. I want to create it so that it could be adopted by teams within corporations and large organisations that have tight IS standards. The initial organisations ...
1
vote
2answers
289 views

References to issues of putting backdors into opensource (like OpenBSD) by FBI or CIA [closed]

There are articles on the Internet (e.g. this) that claim that the FBI/CIA injected security backdoors into OpenBSD. I'd like to know if there are any other references to this issue. This would help ...
1
vote
5answers
201 views

How to replace a constant identifier, for a resource on a network, with a variable one?

I guess the example can make it easier. Assume each Client on a network has an identifier(some alphanumeric sequence) which identifies it uniquely on the network. Each time the Client corresponds ...
1
vote
2answers
263 views

Password system, possible solutions

I am trying to solve a problem with a password system. I need to figure out the probability of the password being guessed. If I have an 8-character alphanumeric password. it cannot be all #'s, ...
1
vote
2answers
92 views

Explaining information leak to Lead dev

Our lead dev tells me that this information leak from our website is "no vulnerability. Just an ugly error UI." It looks to me that the leaked information could be used to aid an attack. Does it ...

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