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• Image Steganography

  - by Sridhar

  Hi, I'm working on Steganography application. I need to hide a message inside an image file and secure it with a password, with not much difference in the file size. I am using Least Significant Bit algorithm and could do it successfully with BMP files but it does not work with JPEG, PNG or TIFF files. Does this algorithm work with these files at all? Is there a better way to achieve this? Thanks.

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• authentication winform + asp

  - by user156144

  I am building a desktop application that needs to update current user's status frequently. This status will be available as RSS feed. In order to do this, I think I can create a asp.net folder and secure it using form authentication. When the desktop application written as winform in c# needs to update status, it can set WebRequest.Credentials and upload data. Is there any better way of doing this? Thanks

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• how to concatenate files according check box selection using system call in php

  - by trainee

  I have some files in php ,i need to concatenate on basis of selection of checkboxes.if one checkbox is selected concatenate according to requirement and so on.this i have to do using system call ,and i'm working in php and ssh (secure shell client)

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• json webservice security

  - by crisgomez

  I have a problem regarding json web service security. I tried to developed a sample web application using json webservice,but the problem is the url was exposed on the client side.So from there,anybody can make a program and call the service for a thousand times. Please take note, that the web service will be using for a registration page, in which checks if the user was exist on the database.So there is no authentication happened on this process. What are the approach to secure the calling of the exposed web service?

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• how to use asadmin deploy for Sun Application Server Plaform Edition 9.1?

  - by dfdfd

  I try to use the command so that i can schedule the deployment using cron trigger. But however i been encountering this error. java.io.IOException: Remote host closed connection during handshake What could be the reason and how do i resolve it? Is it something to do with the port i define? I defined the port used in the admin-server system. As for secure i set to true.

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• Setting cookies for multiple sub-domains

  - by nilacqua

  Is it possible to set a cookie for http://www.example.com from a PHP file located at https://secure.example.com? I have some code that was given to me, that appears to try and fails at this. I was wondering if this is possible at all.

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• Hashes or tokens for "remember me" cookies?

  - by Emanuil Rusev

  When it comes to remember me cookies, there are 2 distinct approaches: Hashes The remember me cookie stores a string that can identify the user (i.e. user ID) and a string that can prove that the identified user is the one it pretends to be - usually a hash based on the user password. Tokens The remember me cookie stores a random (meaningless), yet unique string that corresponds with with a record in a tokens table, that stores a user ID. Which approach is more secure and what are its disadvantages?

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• Web Application Scanner

  - by rajesh

  I want to develop a Web applications to collect or exchange sensitive or personal data, this system would give user a detailed automated report on : • How secure user's website is? • How easily it can be hacked? • Where exactly is the problem and • What are the remedies? Any suggestions????

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• SSL with external static content server

  - by SirMoreno

  I have a .Net web application that for performance issues gets all the static data (CSS, Images, JS) from an external server that is on different location and different hosting company. I want to enable SSL on my site without the users getting a message: "Page contains both secure and insecure elements" Does this means I’ll have to get two SSL Certificates one for each server? If I want the users to continue getting the static content from the external server what other options do I have? Thanks.

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• [php] catch .htaccess username and password?

  - by Mahmoud

  i have a secure login using .htaccess, and i need to know which user accessed the area so that my php index can show him his invoices, but the problem is that how to capture the user name when promoted in .htaccess

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• Deactivate Air app created in AS3 after next monday?

  - by Carlos Barbosa

  Hi, i have an application deployed in Air, written in AS3 that client wants to install and test, i have developed a simple license app, but he is pushing for a full license witch he said he will fully paid on next monday. How would you create a procedure in AS3 to deactivate application next monday? How secure will it be? will simply changing machine date will bypass this?

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• Most popular PHP proxy scripts.

  - by gnucom

  Hello, I need to write a proxy script to log into secure servers without ever revealing an administrative password. Can someone recommend some proxy scripts (written in PHP preferably) that I can look into? Thanks! Edit: I would be most interested in well documented scripts... if that matters.

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• What should I use for password fields in a table; MD5 or SHA1?

  - by Sergio Tapia

  I am by no means a security expert or even a novice. I'm a newbie at security at best. Someone suggested I use SHA1 instead of MD5 - why would I choose one over the other? Is one more secure?

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• What is the best credit card processing service?

  - by JerSchneid

  We're looking to add credit card payments to our system (and it needs to be fairly custom, handling variable "per use" charges each month). We would like the integration to be simple and secure (i.e. no storing of credit card data on our system). What, in your opinion, is the best credit card processing provider to offer this kind of security and flexibility. List only one provider per answer to let the voting system do it's thing.

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• Web Form Security

  - by brandon14_99

  I set a cookie in the headers with an md5 hashed keyword. Then in my code, it checks for the exact matching cookie before displaying a form. Is this pretty much pointless? The form submits to an external site, so I am trying to secure the form without using captcha..

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• Is there a current OpenSSL book?

  - by Martin

  Does anyone know of a more recent OpenSSL book than "Network Security with OpenSSL: Cryptography for Secure Communications" (http://www.opensslbook.com/)? It is from 2002 and does not cover OpenSSL version 0.97+. Best would be a book for OpenSSL 1.0.0 but I guess that one is too recent.

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• what is the advantage of using Linux compared with Windows OS?

  - by learner

  Hi what is the advantage of using Linux server compared with Windows .. except secure and open source answer.

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• Stop people from viewing contents of a directory

  - by pingu

  I want to stop people from viewing the contents of my images directory. I've built an app using Codeigniter and notice that they just have index.html pages with a 403 Forbidden message in all directories - is this a secure method to use? Is an index.html page in the directory sufficient or do I need to update config or .htaccess?

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• Recent OpenSLL book

  - by Martin

  Does anyone know of a more recent OpenSLL book then Network Security with OpenSSL: Cryptography for Secure Communications (http://www.opensslbook.com/). It is from 2002 and does not cover OpenSSL version 0.97+. Best would be a book for OpenSSL 1.0.0 but I guess that one is to recent.

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• Encode and Decode a string in c#

  - by Jibu P C

  Hii, I had a requirement of encode a string provided to a unreadable format and also have to decode after certain action performed. I have tried 'Base64' encoding. But this is not a secure way. I need some other solutions. Give some help regarding the above context.

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• Does HttpWebRequest automatically take care of certificate validation?

  - by Kevin Pang

  I'm using an HttpWebRequest object to access a web service via an HTTP POST. Part of the requirement is that I: Verify that the URL in the certificate matches the URL I'm posting to Verify that the certificate is valid and trusted Verify that the certificate has not expired Does HttpWebRequest automatically handle that for me? I'd assume that if any of these conditions came up, I'd get the standard "could not establish trust relationship for the SSL/TLS secure channel" exception.

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• ASP.NET MVC: How to implement a wild card SSL for more than one static domain on a single IP?

  - by Dr. Zim

  A wild card SSL allows any domain prefix: *.mydomain.com accepts ssl.mydomain.com secure.mydomain.com anything.mydomain.com Given that MVC can route the request to the correct view based on the URL, is it as simple as loading the wildcard SSL cert on an IP, then use DNS to map the various names to the IP?

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• rpxnow - How to promote users to sign in

  - by Harry

  Since adding rpxnow to our website, less users are signing in. Are these readers worried about giving their (eg hotmail) password to a third party site? Has anyone found a good way to promote use of rpxnow (or other openid managers) as a secure method of authentication to non tech savvy readers?

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• Does anyone see any downsides of doing the following to prevent CSRF?

  - by Spines

  I'm wondering if the following method will completely prevent CSRF, and be compatible with all users. Here it is: In the form just include an extra parameter that is: encrypted(user's userID + request time). Server-side just decrypt and make sure it's the right userID and the request time was reasonably recent. Aside from someone sniffing the user's traffic, is this completely secure? Are there any downsides?

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• PHP File System or XML : Security Issue

  - by jasmine

  I want to make a news portal(php) site with minimum mysql force. :create a cron, fetch data from mysql and write to a php file . (I dont know is it right way) But Can I use xml instead of php file? Write mysql data to xml. Is this a secure way? What is the best way? XML or php file? Thanks in advance

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