Website security certificate error message
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Web Site Security Considerations - An Examination
Unfortunately, there are many ways in which website security can be jeopardized. Security hazards are ever present that might impinge on Web servers and LANs (local area networks) on which Web sites reside, even by the routine use of a Web browser.
Web Masters come under fire when coping with the major threats. As soon as a Web server is installed at a site, a porthole is constructed in the local area network through which anyone who is on the Internet can look. Of course, the majority of web site visitors see no more than what they are supposed to look at, but a minority endeavor to find parts of the site that aren't designed to be evident to the public. Nefarious visitors mean to go further than just look; they make an effort to undo the window and steal inside. The harm they can inflict might be sheer vandalism, for example replacing the web site's home page with theirs which could say or show anything at all, or it might be burglary, such as appropriating a contacts or sales database.
It's difficult to avoid the probability that complicated computer software has bugs. No matter how painstakingly it is tested, there is more often than not a certain pattern of events or user actions, while it may transpire once in a blue moon, which causes a failure. Software bugs give rise to gaps in system security. A Web server is involved software which may quite likely contain a security hole.
It's not only the complexity of a Web server that can produce a glitch, but also its open architecture. Consider a CGI script as an illustration. A CGI script can be executed at the server in answer to a remote request from a client. It might be a request from an application or even the click of a button in a browser. If the CGI script includes a bug, there will be a possibility of a security violation.
Network Administrators also have to cope with problems from Web servers on account of the risk they pose to the security of the local area network. Despite the fact that there must be no unauthorised intrusions, admission has to be given to website visitors. This means that access to the network must be controlled. The Administrator therefore must perform a delicate balancing act. Even the most sturdy firewall can be breached if the Web server is configured poorly. Bearing that in mind, normal use of the website can be impossible if the firewall is configured poorly. Reaching a model answer is still more complicated if an intranet is an element of the system. Usually, the Web server in that case must be configured to recognize and validate domains and user groups, which are apt to have differing permission levels and access rights.
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The majority of people using a browser to surf the Web trust that they are doing it in secret and safely. It is not the case. Web browsers can process self-contained software on the client machine that are resident on a web site. Modern browsers show a notice and ask authorization to execute these kinds of programs. Identified generally as "active content", e.g., ActiveX controls or Java applets, these programs, if malicious, may easily install a virus or other dangerous software on the browser user's computer. As soon as it's in the system it can inflict all kinds of havoc and can be extremely problematical to eliminate.
This is also a concern for Network Administrators. Web browsers provide a route for possibly malicious software to seep through the local area network's firewall. When it is in the network, the harm it may cause can stretch from covertly gaining possession of sensitive information to willful demolition.
Besides the concerns regarding active content, simply surfing the Internet records a trail of the user's activities in the browser's history. This could be used by web sites and installed software to establish an accurate report of the user's behaviour and preferences. Despite the fact that this may be thought of as an invasion of privacy by some people, it can be useful by showing applicable content right away, thus unburdening the user of the task of searching for it.
Privacy is a subject which concerns not just browser users but also Web Masters and Network Administrators during the actual transmission of data by means of the Internet. TCP/IP (Transmission Control Protocol/Internet Protocol) is the fundamental language of communication for the Net. When it was created, security wasn't the principal factor of its blueprint. Both network and Internet transmissions should therefore not be thought of as as automatically private. Every time the browser on a local computer downloads a private document from the remote Web server, or the browser user completes a form with private data and clicks the 'Submit' button, the transmitted information can be intercepted without authorisation.
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