Website security check
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An Assessment of Website Security Concerns
An unfortunate fact is that there are lots of ways in which website security can be compromised. Security risks lurk insidiously that affect Web servers and LANs (local area networks) on which Web sites reside, even by the normal use of a Web browser.
Web Masters bear the brunt when coping with the major challenges. As soon as a Web server is installed at a site, a porthole materializes in the local area network through which anyone on the Internet can peer. Certainly, for the most part web site visitors see no more than what they are meant to see, but some endeavor to locate elements of the site that are not supposed to be evident to the rest of the world. Dishonest visitors aspire to do more than just look; they make an attempt to unfasten the window and creep in. The damage they may inflict might be sheer vandalism, such as substituting the web site's home page with one of their own which might say or display anything at all, or else it might be theft, like gaining possession of a contacts or sales database.
It's difficult to escape the virtual certainty that intricate computer software contains bugs. No matter how meticulously it is tested, there's more often than not a certain order of events or user actions, even if it might transpire seldom, which creates an error. Computer software bugs produce breaches in system security. A Web server is convoluted software that can quite easily contain a security fault.
It's not only the intricacy of a Web server which can instigate a problem, but also its open architecture. Think about a CGI script as a case in point. A CGI script can be executed at the server in reply to a remote call from a client. This could be a request from an application or even the click of a button in a browser. If the CGI script includes a bug, there's a risk of a security violation.
Network Administrators also have to confront problems from Web servers owing to the danger they pose to the security of the local area network. Despite the fact that there should be no unauthorized intrusions, admission must be given to web site visitors. This means that access to the network has to be controlled. The Administrator therefore has to perform a delicate balancing act. Even the most robust firewall can be undermined if the Web server is configured badly. Bearing that in mind, normal use of the website may be not viable if the firewall is configured badly. Reaching a model answer is yet more complicated if an intranet forms part of the system. Normally, the Web server then needs to be configured to recognise and validate domains and user groups, which are likely to have varying permission levels and access rights.
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Almost anyone using a browser to surf the Web think that they really are doing it anonymously and in safety. It is not correct. Web browsers are able to execute self-contained software on the user's machine that are hosted by a website. Current browsers show a warning and request authorization to run those programs. Known generally as "active content", e.g., ActiveX controls or Java applets, these programs, if malicious, may easily leave a virus or other dangerous software on the browser user's PC. Once it is in the system it can inflict all kinds of damage and may be very tough to eliminate.
This is also a concern for Network Administrators. Web browsers present a route for possibly malicious software to filter all the way through the local area network's firewall. After it is in the network, the damage it might inflict can go from secretly gaining possession of confidential data to wanton demolition.
Apart from the problems to do with active content, merely browsing the Web leaves a trail of the user's activities in the browser's history. This may be utilized by websites and installed software to determine a precise profile of the user's behavior and interests. Whereas this may be considered an invasion of privacy by some people, it can be constructive by offering related content instantaneously, so exonerating the user of the job of trying to find it.
Privacy is a subject that concerns not only browser users but also Web Masters and Network Administrators during the actual transmission of data via the Web. TCP/IP (Transmission Control Protocol/Internet Protocol) is the basic language of communication for the Net. When it was created, security wasn't the most essential aspect of its blueprint. Both network and Internet transmissions should therefore not be considered as automatically confidential. Every time the browser on a local computer downloads a confidential document from the remote Web server, or the browser user fills out a form with confidential data and clicks the 'Submit' button, the transmitted information could be intercepted without authorization.
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