Generally speaking, your Web browser will delete a session cookie when you close the browser window. The data from session cookies is not generally a privacy concern since it is not stored long term. However, there are other types of cookies that may pose a privacy concern, including Flash cookies, permacookies, and zombie cookies.
As a result, you may want to delete instances of these cookies from your computer to prevent your online activity from being tracked. Additionally, you may want to change your browser or other computer settings so as to restrict the installation of these types of cookies without your knowledge.
Flash is an old Web technology developed by Adobe that is slowly being phased out. However, most browsers still support Flash, and the technology can be used to create a type of cookie. According to Adobe :. Shared objects are most often used to enhance your web-browsing experience. For example, by allowing you to personalize the look of a website that you frequently visit. More important, shared objects can never access or remember your e-mail address or other personal information unless you willingly provide such information.
Unlike regular Web cookies, which can be disabled via your browser preferences, Flash cookies can only be accessed through the Adobe Flash Player Settings Manager.
From the Flash Player Settings Manager, you can change the storage limit of individual websites by selecting the website from the list and moving the slider bar to the left or right. By default, the storage limit is KB. If you want to delete stored data for an individual website, highlight the website and click Delete. To delete all the data at once, choose Delete All Sites.
From there, you can control how much storage space websites can use to keep information by adjusting the slider to the left or right. Be advised that if you uncheck this box, some websites that use Flash may not function correctly. That said, since Flash usage is increasingly rare in legitimate websites, most people will not notice a significant change in their Web browsing experience.
Here is the file path for accessing the information:. Unfortunately, marketers are forever inventing new ways to track your personal information. One instance that went too far in abusing user privacy came to light in Despite the fact that customers could opt out of the Relevant Advertising program, the permacookies were still inserted into HTTP requests by customers using the cellular network to access the Internet. Verizon did not, attempting to address the problem by means of an opt-out program that prevented the installation of permacookies.
Subsequently, Verizon was required to obtain customer permission prior to sharing any data. Additionally, the company had to provide its customers with information about its ad targeting practices. You cannot count on companies to have your best interest in mind. This means staying abreast of technological developments that may put your privacy at risk.
However, sometimes you may notice that cookies you have already deleted have been reinstalled despite setting your preferences to block cookies in the future. For example, third-party cookies and Flash cookies may work together to create zombie cookies. Because most users do not manage their Flash cookies, some websites install Flash cookies as well as regular third-party cookies. The Flash cookie will periodically check to make sure that the third-party cookie is installed.
If the third-party cookie has been deleted, the Flash cookie will re-create it. Unfortunately for your privacy, since cookie re-creation is not considered a fresh install, zombie cookies often bypass any restrictions you have placed on the installation of third-party cookies. Not only that, when zombie cookies are controlled by Flash player, they can track your activity across multiple browsers. What this means is that even if you delete third-party cookies from your computer and change your settings to prevent their installation in the future, you may still have zombie cookies on your computer unless you take some precautions.
In order to prevent zombie cookies, you need to first delete the cookie that is reinstalling the third-party cookies. In the case of Flash cookies, you can do this by following the instructions above.
There is also a free piece of software called CCleaner that can be used to delete unwanted files on Windows, Mac, or Android systems. Although this software is well reviewed, it is a third-party installation. If you decide to go this route, read the instructions carefully and make sure that you are installing and using the latest version, as this type of software is often updated to address security issues.
If you are using CCleaner, click Cleaner and select the Applications tab. Once you have removed the Flash cookies, you can set your Flash player to decline the installation of third-party Flash cookies in the future. Because Flash cookies can create zombie cookies in multiple browsers, once you have removed the offending Flash cookie you may want to remove any third-party cookies in all the browsers on your computer, even those you do not use frequently.
You can also use CCleaner to remove other third-party cookies on your computer responsible for respawning zombie cookies. Whereas session cookies expire when you close your web browser, persistent cookies have a set expiration date or are set to expire after a certain amount of time has elapsed.
Sometimes persistent cookies are useful; for example, they may keep you logged in to your email account so that you do not have to enter your username and password every time you restart your computer. Other times, however, persistent cookies are used to track your behavior online in ways you may not appreciate.
For example, a company may use persistent cookies in order to track how many times you view their advertisement across multiple websites, or to ensure that you see their advertisement on multiple websites. For this reason, they are sometimes referred to as tracking cookies or third-party cookies. With these tips, and your regular history deletion, it will help you gain better privacy online. Use Google Fonts in Word. Use FaceTime on Android Signal vs. Customize the Taskbar in Windows What Is svchost.
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