Cookies were created in 1994 by Lou Montulli, an employee of Netscape, to solve some problems related to limitations in identifying the computers connected to a web page. Without cookies the sites can not know if two requests come from the same device, so you must assign them labels. Therefore, if on the one hand cookies can improve the navigation, on the other hand can threaten both privacy and information security to every user on the network. The latest versions of both browsers (Netscape and Internet Explorer) offer the possibility to launch information whenever a server tries to send a cookie.
If you enable this option, you can decline cookies. So, they are very useful, for example, if, after the subscription to a site that requires the use of a username and password, you receive a cookie, which allows to avoid the inclusion of these two parameters whenever we connects you browse from one page to the other of the reserved area; the browser will use the cookie as badge. Per with regard to security, however, only one “spy” armed with a sniffer, or passive interception activities of information, could intercept the cookie while going from the browser to the server, and use it for free access to the site. But since, the browser uses the domain name system (DNS) to determine which cookies belong to a server, you can change a browser, or enter and spy cookies on your computer in order to send a cookie to a server pirate, to subvert temporarily DNS.
To avoid this, among many technologies, the primary processes for those sites, is not to create cookies that have long life, because they can be stolen from the database of the user’s cookies and be read. Cookies do not contain executable code and therefore cannot corrupt data, are completely harmless, unable to contain the virus. Right now the scams that occurred are minor and e-commerce seems to be quite safe.Imagine credits header:huffingtonpost.it