How To Deal With Sql Injections And Cross Site Scripting-www.tubecao.com

Nowadays there are many types of software products. Each type is unique and requires special approaches and methods in order to develop and release successful products. Web applications are more exposed to various attacks than desktop ones due to the nature of web technology. Web software products, unlike desktop ones, are always multiuser, accessible from different places and support simultaneous interaction with many users. These features make web sites and applications a target for various cyber-attacks more often than desktop software are attacked. Among Prevalent Types of Attacks on Web Applications Are: – SQL injections; – cross site scripting. Attacks of those types are applicable only for web software. By means of them hackers can steal sensitive data or perform other malicious actions. SQL injections are utilized when the user inputs are in the form of SQL queries to the program database. A hacker can inject some SQL .mands into the user inputs and this way get an unauthorized access to the information stored in the database. If such an attack was unsuccessful, the needed data could be taken from the error message. Sometimes error messages contain the user password or other confidential information in clear. Cross site scripting can be described as a type of SQL injections. Malicious users inject some code into the web software and it runs when another user opens the page with the injected code. The code may redirect the user to another resource, perform some actions on the user browser, access confidential data stealing them from the cookies, etc. Performing security testing of a web software product one should search for such vulnerabilities and report security bugs if they are in the application. Specialists in web site testing, desktop testing and mobile application testing claim that susceptibility to SQL injections and cross site scripting attacks is a serious security defect. An efficient way of protection from the mentioned types of cyber-attacks is setting special requirements to the web software input fields. Input Fields of a Web Software Product Should: – Have a restriction on maximum number of symbols. The fields should allow entering as few symbols as possible, for example, a username field should allow entering no more than 25 symbols. – Not allow to use HTML, code tags. In this case malicious users will not be able to extract data from the system databases by means of input fields. Experts in penetrations testing say that web software products must also decline redirects from and to unknown resources. Peculiarities of web technology impact not only security testing but load testing , usability testing, functional testing of web sites and applications as well. 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