Cookies help to do this more effectively while making

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Cookies help to do this more effectively while making sure that consumers are not getting bombarded with irrelevant or duplicative ads, content, or promotions that can diminish the quality and value of the Web surfing experience. Disadvantages of the cookie technology Along with the benefits of cookie technology, there are certain disadvantages that are explained below. Cookie poisoning is defined as the act of manipulating the contents in the cookie before they are sent to the server. Changing the information contained in the cookies can misguide the websites and advertisers. In case a cookie contains a transaction information, an attacker can change the value in the cookie causing losses on part of the user or the e-commerce website, involved in the transaction. A site has an independent set of cookies. Another site should not be able to manipulate its cookies. The cookie technology is vulnerable to this difficulty in case of some browsers. Cookies may generate an inconsistent state between the state of the client and that stored in the cookie. In cases, where an operation is undone by clicking on a Back button, or when a page is reloaded, the state stored in the cookie should reflect the corresponding change. The cookie technology lacks the ability to distinguish between two users who use the same user account. Cookies do not distinguish one user from another. They can distinctly identify only the combination of a user account, a browser and a computer. The cookie technology is vulnerable to cookie hijacking. Cookie hijacking refers to the interception of the information on the cookies by a malicious user. When cookies are sent over the network in unencrypted HTTP sessions, there exists a potential risk that the information on the cookies can be stolen. 6.5 Managing Cookies For managing cookies, following steps are beneficial. Click on the Internet Explorer icon on your computer’s ‘Start’ menu. Click on ‘Tools’ in the toolbar at the top of the browser window. Select the ‘Internet Options’ heading. Go to the ‘Privacy’ tab. Use the slider bar on the left to set your cookie preferences. You can choose to accept all cookies, no cookies or to restrict the use of cookies to the degree of your choice. You will be presented with an explanation of what sorts of cookies are blocked at each level of restriction. Allow cookies from certain Websites. Click on the ‘Sites’ button and then enter the URLs of Websites from which you always want to allow cookies. Click ‘Allow,’ then ‘OK’ when you are done. You can follow the same steps to always block cookies from certain sites. Just hit the ‘Block’ button instead of the ‘Allow’ button.

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