7 Tips to Prevent Your Website from Cross Site Scripting

Tips to Prevent your Website from Cross Site Scripting - wholikeit.com

Tips to Prevent your Website from Cross Site Scripting - wholikeit.com

Cross Site Scripting or XSS attack is a type of website attack that seems to hack your websites on the internet. This type of attack generally occurs, when any particular website fails to prevent any malicious code or hacker attacks from accessing the user information or credentials. They easily insert some malicious codes into the script of the website and the user data is hacked very efficiently. The XSS attackers can easily get track of user’s details and many account information. Whenever the user enters any data into the website, the XSS attackers can capture their entry and use these data to hack their personal accounts. A XSS attack can be very dangerous and can completely steal all your personal information stored on the website.

1) The attacks of Cross Site Scripting can be easily avoided by putting restrictions on user inputs and parameters on the web page. Often these user parameters form the part of the web pages or the website content. If the pages are carefully scrutinized and the entries of unknown parameters are restricted, it can surely control XSS attacks.

2) The entries of the user inputs must be regularly validated, to minimize the risks of Cross Site Scripting. But it is very difficult to manage such validation process on a regular basis. Most of the PHP applications, allows user to submit special characters or combination of different characters as user inputs. So the validation process should be accompanied with advanced techniques to prevent any unauthorized access.

3) In many cases, the scripts which are submitted by the users contain some undefined explicit elements. These scripts are not recognized by the validation process and they originate from suspicious sources. So the website’s need to use htmlspecialchars() to avoid any kind of discrepancy. This would help to eliminate any type of errors in JavaScript, CSS or other URL’s. By using this special function, you can easily get rid of htmlentities(), which is not at all compatible with either XML or XML serialization. But you should also remember to include ENT_SUBSTITUTE, ENT_QUOTES within the htmlspecialchars().

4) If the website designing is not proper, it is more prone to suffer from XSS or cross-site scripting attacks. The web server becomes highly vulnerable and it accepts all kind of unfiltered data. Moreover, the protocol HTTP POST request is used to enter malicious code into the server system. So you need to filter your inputs and avoid these server errors.

5) To increase their visibility on the internet and to attract more visitors, many websites allow the users to enter HTL content or markup on their web pages. Most of the websites accept HTML comments, HTML markup and external URL links from the users. These HTML markups can be used to malicious scripts or codes into the website coding. Hence, it is important to filter the content and remove these HTML markups.

6) Many websites allow dynamic script injection on their web pages, to retrieve their JSON data. But these dynamic script injections can be extremely harmful for your websites. This script can infect your complete server system and can damage it. Hence, the website owners need to make sure that the website is receiving script from a trusted or reliable site.

7) Along with destructing your complete server system, XSS can also get the complete information about the users. XSS fishing attacks can get access to user’s important information and can cause great loss. So, it is important to evaluate the URL parameters properly, to identify any scam from the external link reference.

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