What does cookie mean?

This is not clear in one or two sentences. Forgive me for copying it ~

Cookies is sometimes used in its plural form, which refers to the data (usually encrypted) that some websites store on users' local terminals in order to identify users. Defined in RFC219. It was invented in March 1993 by Lou Montulli, a former employee of Netscape.

the purpose of editing this paragraph

the server can use the arbitrariness of the information contained in Cookies to filter and maintain these information regularly to judge the status in HTTP transmission. The most typical application of Cookies is to determine whether the registered user has logged in to the website, and the user may be prompted whether to keep the user information in order to simplify the login procedure when entering the website next time. These are the functions of Cookies. Another important application is processing such as "shopping cart". Users may choose different products on different pages of the same website for a period of time, and this information will be written into Cookies to extract information at the time of final payment.

using and disabling Cookies

users can change the settings of the browser to use or disable cookies.

Microsoft Internet Explorer

tools > Internet options > Privacy page

Adjust the slider or click "Advanced" to set it.

Mozilla Firefox

Tools > Option > Privacy

(Note: In the Linux version, it may be the following operations: Edit >; Attribute > Privacy, while Mac is: Firefox > Attribute > Privacy)

Set Cookie options

Set Cookies in each domain that are blocked/allowed

View the cookie management window, check the existing cookie information, and choose to delete or block them

Apple Safari

Safari > Preset > Security label

Select the following options

Always accept Cookies

Never accept Cookies

Accept Cookies only from the preset options of the sites you visit (for example, do not accept advertisements from other sites).

You can display all cookies residing in your browser or delete one of them at any time.

Konqueror

If there is no cookie list, please remember to add "."before the domain name, such as baidu.org, otherwise Baidu will not read cookies (for KDE 3.3).

Editing this life cycle

Cookie can keep the login information until the next session between the user and the server. In other words, the next time you visit the same website, the user will find that you have logged in without entering a user name and password (of course, it is not excluded that the user manually deletes the cookie). And some Cookie are deleted when the user exits the session, which can effectively protect personal privacy.

edit the recognition function in this paragraph

if multiple browsers are installed in a computer, each browser will store cookie in an independent space. Because cookies can not only confirm users, but also contain information about computers and browsers, a user who logs in with different browsers or computers will get different cookie information. On the other hand, cookies will not distinguish the identities of multiple users who use the same browser on the same computer unless they log in with different usernames.

Opponents of cookies

Some people oppose the application of cookies in the network for the following reasons:

Inaccurate identification

See the identification function above

Privacy, security and advertising

Cookies have seriously endangered users' privacy and security to some extent. One of the methods is that some senior executives of companies visit websites that they have never visited (found by search engines) for some purpose (such as market research), and these websites contain a picture called Web Bug, which is transparent and only one pixel in size (for hiding). Their function is to write all computers that have visited this page into cookie. Then, the e-commerce website will read these cookie information, find the website where these cookies are written, and then send junk mail containing advertisements for related products of this website to these senior personnel.

Because it is more targeted, this system is effective, and customers who receive emails show more or less interest in products. Once these sites write cookie and make them work, they can get paid from e-commerce websites to maintain the survival of the websites.

In view of the hidden dangers, Sweden has passed legislation on cookies, requiring websites that use cookies to explain the properties of cookies and instruct users how to disable cookies.

Edit this paragraph to steal cookies and script attacks

Although cookies are not as dangerous as viruses, they still contain some sensitive information: user name, computer name, browser used and websites visited. Users don't want these contents to leak out, especially when they also contain private information.

this is not an alarmist. a tool called Cross site scripting can achieve this goal. Cookie thieves and cookie poisons will steal content when attacked by Cross site scripting. Once a cookie falls into the hands of an attacker, it will regain its value.

cookie thief: a hacker who collects user cookies and sends them to attackers. Attackers will use cookie information to enter user accounts through legal means.

cookie poison: using security mechanism, attackers add code to rewrite the contents of cookies, so as to continue attacks.

Substitutes for editing Cookies in this paragraph

In view of the limitations of cookies and the voices of opponents, there are the following alternatives:

Brownie scheme, which is an open source project initiated by SourceForge. Brownie was used to enjoy access in different domains, while cookies were conceived as access in a single domain. The development of this project has stopped.

P3P, which is used to allow users to obtain more protocols to control personal privacy rights. It is similar to a cookie when browsing a website.

when transmitting data with the server, you can add a unique query string after the address to let the server identify whether it is a legitimate user, and you can also avoid using cookie.

Edit the specific meaning of the cookie in this paragraph

Cookies always refer to snacks eaten with milk. However, in the Internet, the word "cookie" has a completely different meaning. So what is a "cookie"? A "Cookie" is a small amount of information sent by a web server to be stored in a web browser, so that this information can be read back from the browser the next time this unique visitor returns to the web server. This is useful for the browser to remember the specific information of this visitor, such as the last visit location, the time spent or user preferences (such as style sheets). A Cookie is a text file stored in the browser directory and stored in RAM when the browser is running. Once you log out of this website or network server, Cookie can also be stored on the hard drive of your computer. I3I.net's intention is to terminate all cookie in I3I.net when visitors finish their browser conversations.

what are the uses of cookies?

one of the purposes of cookies is to store a user's password and ID on a specific website. In addition, it is also used to store the preferences of the start page. On websites that provide personalized viewing, your web browser will be required to use a small amount of space on your computer hard drive to store these preferences. In this way, every time you log on to the website, your browser will check whether you have any predefined preferences (cookie) for this unique server. If so, the browser will send this cookie to the server together with your request for the webpage. Microsoft and Netscape use cookie to create personal start pages on their websites. Common uses of cookie by companies include: online ordering system, website personalization and website tracking.

website personalization is one of the most beneficial uses of cookie. For example, when someone comes to CNN website but doesn't want to see any business news. The website allows him to select this item as an option. From then on (or until the cookie expires), he will not read business news when he visits CNN.

how do these Cookie work?

the command line in the HTML code of the document tells the browser to set a cookie with a certain name or value. The following is a common example of a script used to set cookie.

Set-Cookie: name = VALUE;

expires = DATE;

path = PATH;

domain = DOMAIN_NAME;

how about security? HTTP Cookie cannot be used to retrieve personal data from your hard drive, place viruses, get your email address or steal sensitive information about your identity; However, HTTP Cookie can be used to track where you go on a specific website. It is difficult to track websites without using cookie.

As for everything else related to the Internet, it is anonymous as you wish. No website knows who you are unless you disclose it to the website yourself. At the same time, cookie are just a statistical means of website tracking to better understand usage patterns and improve the efficiency of website visitors.

if the website designer aims to make the webpage more interactive with visitors, or if the designer plans to let visitors customize the appearance of the website, you need to use cookie. Moreover, if you want your website to change its appearance in some cases, cookie provide a quick and easy way for your HTML page to change as needed. The use of cookie by the latest servers contributes to the interactivity of the database, thus improving the overall interactivity of the website.

Cookie means small dessert in English, and we can always see this word in the browser. How can food be related to the browser? When you browse the websites you have visited before, it may appear in the webpage: Hello XX, it feels very kind, just like eating a small dessert. This is actually achieved by accessing a file in your host, so this file is also called a Cookie. Want to know all about Cookie? Look at the following!

1. Understand the applicable object of Cookies: Beginner readers

A Cookie is a small text file stored on your machine when you browse a website, which records your user ID, password, the web pages you visited, the time you stayed, and other information. When you come to the website again, the website can read the cookie and learn your relevant information, so that you can take corresponding actions, such as displaying a welcome slogan on the page. You can view all Cookie saved in your computer by selecting "Settings/View Files" in the "General" tab of IE's "Tools /Internet Options". These files are usually named in the format of user@domain, where user is your local user name and domain is the domain name of the website you visit. If you use a NetsCape browser, it is stored in "C: \ program files \ NETSCAPE \ users \". Unlike IE, Netscape uses a Cookie file to record Cookies of all websites.

in order to ensure the safety of surfing the internet, we need to set Cookie appropriately. Open the Privacy tab in Tools /Internet Options (note that this setting only exists in IE6., and other versions of IE can simply adjust it by clicking the Custom Level button in the Security tab of Tools /Internet Options). Usually, you can adjust the slider to the "medium high" or "high" position. Most forum sites need to use Cookie information. If you never go to these places, you can set the security level to "block all Cookies". If you just want to ban Cookie from individual websites, you can click the Edit button to add the websites to be blocked to the list. In the "Advanced" button option, you can set the first-party Cookie and the third-party Cookie. The first-party Cookie is the Cookie of the website you are browsing, and the third-party Cookie is not the Cookie sent to you by the website you are browsing. Usually, you should choose "Reject" for the third-party Cookie, as shown in Figure 1. If you need to save Cookie, you can use IE's "Import and Export" function, open "File/Import and Export" and follow the prompts.

most of the contents in cookies are encrypted, so it seems to us that they are just meaningless alphanumeric combinations, and only the CGI processor of the server knows their true meaning. Through some software, we can see more contents, and the Cookie information viewed by using Cookie Pal software is shown in Figure 2. It provides us with the contents of Server, Expires, Name, value and other options. Among them, the Server is the website where Cookies are stored, Expires records the time and lifetime of cookies, and the Name and value fields are specific data

Second, the cookie delivery process is applicable to intermediate readers

when typing in the browser address bar.