Web site security solutions
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Website Security Issues - An Understanding
It is unfortunate, but there are lots of ways in which website security can be breached. Security risks exist which affect Web servers and LANs (local area networks) where Web sites reside, even by the normal use of a Web browser.
Web Masters bear the brunt when dealing with the gravest threats. As soon as a Web server is set up at a site, a window appears in the local area network through which anyone using the Internet can peer. Of course, for the most part web site visitors look at no more than what they are supposed to see, but a minority attempt to unearth parts of the site which are not designed to be observable by all and sundry. Nefarious visitors wish to go further than simply look; they try to unbolt the window and steal through it. The damage intruders may inflict might be sheer vandalism, like replacing the website's home page with their own that might say or display anything, or else it might be theft, like gaining possession of a customers or sales database.
It's difficult to elude the virtual certainty that intricate software includes bugs. Regardless of how thoroughly it's tested, there is more often than not some permutation of events or user actions, even though it might crop up on the odd occasion, that leads to a fault. Computer software bugs cause holes in system security. A Web server is complex software that may very easily contain a security fault.
It's not only the intricacy of a Web server that may trigger a glitch, but also its open architecture. Think about a CGI script as an example. A CGI script may be processed at the server in response to a remote request 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 has a bug, there is a chance of a security violation.
Network Administrators also have to tackle problems from Web servers due to the risk they pose to the security of the local area network. Though there must be no unauthorised incursions, right of entry has to be given to web site visitors. This means that access to the network should be controlled. The Administrator therefore must perform a delicate balancing act. Even the most robust firewall may be compromised if the Web server is configured badly. By the same token, normal use of the web site may be unachievable if the firewall is configured badly. Reaching a model answer is even more complicated if an intranet forms part of the system. Normally, the Web server then has to be configured to recognise and validate domains and user groups, which are liable to have varying permission levels and access rights.
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The majority of people using a browser to surf the Net trust that they really are doing it incognito and safely. This is not the case. Web browsers are able to process autonomous software programs on the client computer that are hosted by a website. Current browsers show a notice and request authorization to execute these kinds of programs. Well-known generally as "active content", e.g., ActiveX controls or Java applets, these programs, if malicious, can easily inject a virus or other dangerous software on the browser user's machine. After it is in the system it can inflict all kinds of catastrophe and can be exceedingly tricky to delete.
This is also a concern for Network Administrators. Web browsers present a way for potentially malicious software to permeate through the local area network's firewall. As soon as it is in the network, the damage it is able to inflict can stretch from furtively appropriating confidential information to wilful spoliation.
Aside from the matters regarding active content, simply browsing the Internet records a trail of the user's activities in the browser's history. This could be used by websites and installed programs to create a precise report of the user's behavior and preferences. Despite the fact that this might be thought of as an invasion of privacy by some people, it can be advantageous by offering relevant content straight away, thus relieving the user of the job of searching for it.
Privacy is a question that worries not only browser users but also Web Masters and Network Administrators during the actual transmission of information via the Web. TCP/IP (Transmission Control Protocol/Internet Protocol) is the basic language of communication for the Internet. When it was created, security was not the most significant feature of its design. Both network and Internet transmissions should therefore not be thought of as as necessarily private. Each time the browser on a local machine downloads a confidential document from the remote Web server, or the browser user fills in a form with personal data and clicks the 'Submit' button, the transmitted data might be intercepted without authorisation.
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