An application that is accessed over a network such as the Internet or an intranet using a browser.

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1
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1answer
177 views

Are there any Benefits of Ajax Fingerprinting?

I was reading an article on "Web 2.0 Defense with Ajax Fingerprinting and Filtering". The paper emphasis on using Ajax Time stamp header to identify Ajax calls. // Building request ...
14
votes
5answers
764 views

What is better, an established framework or a homebrew solution?

Recently, a website related to our university was hacked along with many others. This led to a general discussion1 on how to secure the website in the future. Anyway, there is one point that was ...
3
votes
3answers
178 views

Is it safe to mix authentication methods?

Is it a good idea to "combine" authentication methods? Example we can use username/password method to authenticate a user from a server. What if we used this as a first authentication step to get ...
7
votes
5answers
10k views

Hiding JavaScript source code

In a web-app should one strive to hide as much of the code as possible, for example from view source? In particular I was wondering should JavaScript be hidden, especially ones used for Ajax? I was ...
4
votes
4answers
492 views

Security risk of adding a HTTP Header with server identifier

We are about to deploy a web application to a web farm of quite a few web servers. During our testing we have found issues happening in one of the servers but not in others. Most of them because of ...
8
votes
2answers
278 views

Is there any risk related to allow user to give an URL as their image profile?

Building a website, I'd like to allow users to specify an url that point to an image that will be used as a profile picture (included in the HTML DOM as a ). But before doing anything stupid, I was ...
2
votes
3answers
131 views

Can an attacker gain any information from an application/octet stream if they have no access to the sending and receiving code?

Essentially, I'm wondering if an octet stream is, by its nature, secure without knowledge of a semantic meaning for the bytes being sent. If you have no knowledge of the processing at either end of ...
32
votes
7answers
2k views

Is there a difference between GET and POST for web application security?

I have 2 choices in sending data between 2 web applications. I encode the data in Base64 and append to the URL and retrieve these parameters at my destination application and decode the parameters. ...
2
votes
6answers
340 views

Protecting an admin area from the public

We are about a month away from launching a pretty important site, which comes with an admin console to help us manage the site. Now I'm not very interested at just leaving the admin out in the open ...
-1
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1answer
184 views

setting up website for logged in users, anyone, and files no one should see (via the web) [closed]

I asked how to prevent not logged in users from seeing certain content but the solution I chose to implement encountered a problem. I chose to make my root directory for the server C:\WAMP\www\public ...
2
votes
3answers
242 views

What is required to ensure users' information being sent over my website is secure with the use of account log ins

I have inherited the responsibility of managing my company's website. There are some customers who are required to submit highly confidential information via the website using online forms. I have ...
0
votes
2answers
709 views

OpenID without SSL certificate

Is it wise to use OpenID (from Google or Yahoo) to log-into a website instead of a username+password login if that website doesn't have an SSL certificate installed? Just to make things clear, ...
3
votes
4answers
597 views

How can I constrain or limit 3rd party Javascript (*.js) files that can DOS my site?

Many website owners integrate Google analytics, various Facebook or Twitter social media javascript plug ins into their web pages. The problem is that this trust seems to be "all or nothing", meaning ...
8
votes
2answers
1k views

What unique risks does MVC model binding bring to a website? What additional vigilance is needed?

From what I understand, "model binding" is where a website based on ASP.NET MVC or Ruby on Rails (there are others...) takes parameters in HTTP's GET statement and passes them as variables to code ...
7
votes
6answers
1k views

how to mitigate a DDoS from botnet on your website that comes from random IPs

I am wondering how do you mitigate a ddos attack which is coming from a botnet and hitting random URLs on a website. If there was a consistent URL it was hitting then it would be fairly simple, and ...
0
votes
4answers
842 views

Is using the md5 hashing algorithm as method for authorization in an HTTP POST request unsafe?

I am creating a page on a website that will show a user some authorized information from another website, and that website uses a combination of the user's user-number and a secret passphrase hashed ...
1
vote
1answer
1k views

Picking an encryption algorithm for auth tokens passed via AJAX

I'm looking for a low CPU intensive encryption algorithm, to pass around session authentication tokens. As an example: The user will login in to the website (via OAuth, whether by the site as ...
8
votes
3answers
2k views

Encrypting user data using password and forgot my password

I am planning to do a web application which stores a lot of personal stuff (info, photos...). And to give users a sense of protection, I want to encrypt the data before storing it to the database. ...
3
votes
4answers
236 views

Securing opensource web application

I have an open source website. I need to add an admin section to the website which is accessible to only one person. To make it secure, I was thinking about providing a login page which checks if the ...
3
votes
3answers
3k views

Malware infections from visiting or using YouTube

Is it possible to be infected by viruses or other malware while visiting YouTube? What kind of measures do the YouTube staff take to prevent viruses and malware?
3
votes
1answer
818 views

Is it possible to restrict portions of a web site to only allow access based on geographical region using the IP address?

Disclaimer - I am not a security expert, so this may just be a dumb question. My security knowledge is focused strictly on development. When it comes to configuration and networking, I know only ...
9
votes
4answers
417 views

When changing a password using a WebPage, must the old password be entered on the same screen?

There is a convention to always prompt for the old password on the same page as the one where the old password is being changed as shown below. Is it acceptable from a security perspective to allow a ...
6
votes
1answer
1k views

Should content delivery depend on FCrDNS (forward-confirmed reverse DNS) look-ups and why?

First, let me clear that this isn't a duplicate of Does deliberately wrong information from a DNS server violate standards generally accepted good practices? thread, as I'm not interested in legal ...
1
vote
1answer
159 views

Is it secure to use ChangeHats for Web Application?

I was reading an article on "Profiling Your Web Applications Using ChangeHat" where change hats mean to use different security context for different portion of application. Following are lines taken ...
6
votes
1answer
262 views

How exactly does Burp Sequencer calculate the values it derives?

I'm testing a Web application based on SAP for a customer. One of the checks we normally do is to analyse the cookie holding the session token to make sure that it is sufficiently random and you ...
3
votes
1answer
849 views

Are there modules to harden Symfony 2 sessions?

We're looking at building a new app on top of Symfony 2, but security is our top priority. After digging around a bit, it seems that there are a number of built-in options for Session management (eg ...
17
votes
5answers
2k views

From a security standpoint should users be asked to confirm their password when registering?

Is it advisable to have users re-type their password to confirm it's correct? On User Experience the general consensus seems to be no but I'm wondering if this has security ramifications? EDIT: my ...
1
vote
5answers
524 views

Can hackers find secret tokens passed to HTTP GET requests?

I have some code like this in index.php: if(isset($_GET['something'])){ //do something } Can hackers find this and request index.php?something, or is this sufficient for security?
16
votes
4answers
7k views

Should sensitive data ever be passed in the query string?

Should sensitive data ever be passed via the query string as opposed to the postback? I realize that the query string will be encrypted, but are there other reasons to avoid passing data in the ...
2
votes
1answer
99 views

Quick Security Mitigations to Impending attacks

Suppose you are the sysadmin, and you know of an impending attack that just started or about to start soon. You can either wait it out, or try a few tricks and quick mitigation to fend off attackers ...
2
votes
1answer
335 views

Good tools for reverse engineering colaboratively? [closed]

Does anybody know a good set of tools for doing reverse engineering of binaries in a collaborative way?. My original idea is to disassemble a binary, allowing to add information about functions, ...
0
votes
1answer
247 views

Generating Web Application Security Profile

Currently i have deployed ModSecurity as a reverse proxy for providing application layer security. Now i want to write application specific rules for all the web application i am protecting i.e. ...
3
votes
4answers
100 views

What is the technique to determine if a user is “reading” a page called? (similar to “infinite scroll”)

When I read an article at Salon.com I notice that the "overflow content" (where I need to scroll down) is loaded on demand. I can't imagine this being a useful bandwidth savings technique, so the ...
1
vote
1answer
55 views

Safely transfer UserID among different Subdomains

Scenario : Application a.mydomain.com redirects its users to application b.mydomain.com for Account Creation. b.mydomain.com creates the account, and redirects the user back to a.mydomain.com with ...
1
vote
3answers
307 views

Should WS-Fed, Mozilla's Persona or OpenID ever be used with a Banking application?

Most banking sites I've seen use a sign in process that is proprietary, or otherwise won't integrate with an external IDP. Should banks offer integration with services like OpenID, WS-Fed, or ...
1
vote
2answers
642 views

Breaking out of attribute in double quotes

I have a piece of code that allows for [url]someurl[/url] BB-Code and replaces it with <a href="someurl">someurl</a> It takes two precautions to prevent XSS. It replaces ...
1
vote
2answers
138 views

Bad transactions in an e-commerce system?

I read an article signifyd-raises-2m-from-andreessen-horowitz-to-help-online-businesses-use-data-to-prevent-payments-fraud which talks about a service that pulls together data to screen the ...
1
vote
1answer
280 views

What does key, key pair and signature mean here?

I was reading How are possible uses for X.509 (SSL) certificates denoted? on IT SE. It begins with: X.509 certificates can be used for servers, clients, email, code signing and more ...
1
vote
2answers
1k views

UNION SQL Injection

I'm trying to demo SQL Injection with a UNION query but I'm not getting results. This is the C# code and the database is SQL Server 2008 R2: string cString = "server=.\\sqlexpress; ...
7
votes
5answers
25k views

Playing with Referrer Header

There are 2 sites: http://www.site1.com http://www.site2.com http://www.site1.com contains link to http://www.site2.com as <a href="http://www.site2.com/">link<a/> When user clicks ...
5
votes
3answers
1k views

CSRF Countermeasures

I'm working through a book on web application security and it says that an effective CSRF countermeasure is to assign a temporary pseudo-random token to sensitive actions performed by authenticated ...
6
votes
3answers
393 views

What sort of delay will deter a robot from crawling my site?

I use what I believe is the standard method of identifying bad bots that do not respect my robots.txt (i.e. disallowing crawling the bad-bots subdirectory, then logging those who still go there). So ...
2
votes
2answers
600 views

How can I trace Hacking attempt

First of all I dont want to track the hacker. I want to track if the system is being compromised some way. For example when a website is under attack it'll receive malicious data. I want to check ...
1
vote
3answers
607 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 ...
6
votes
6answers
3k views

What does it actually mean when someone says their website is hacked?

I have seen many people say that their website has been hacked using some vulnerability. I never fully understood what this means. To me the only way to get control of website is get the FTP ...
0
votes
2answers
196 views

Is this code vulnerable?

I have developed a php code given below. I would like to know what are the security vulnerabilities present within this php code? <?php if(isset($_SESSION['id'])){ // get data ...
2
votes
1answer
4k views

Wifi login redirect applications

This may sound a bit naive questions as i am a beginner. But I do my best to put it into words. You may have experience when sometimes you want to use the internet in a cafe for example (with your ...
13
votes
3answers
879 views

What does a HTML filter need to do, to protect against SVG attacks?

I recently learned that SVG (Scalable Vector Graphics) images introduce a number of opportunities for subtle attacks on the web. (See paper below.) While SVG images may look like an image, the file ...
1
vote
1answer
167 views

Client vs Server security for business critical application (crossplatform)

We have the option to develop a software either based on Java (but then it is only available for desktop clients using Java SE and can run maybe also as tomcat app can be multithreaded, stable, ...
1
vote
2answers
1k views

How do I holistically protect a web service from network and MITM attacks?

I have several financial web services that are accessed over HTTPS, however the client devices may be accessing the web services over untrusted WiFi, through questionable proxies, and possibly ToR ...