DoubleClick Description

DoubleClick is an online business that is affiliated with Google. However, many PC security researchers and organizations consider their HTTP cookies as spyware since they can track a computer user's online activity and record any advertisements that are viewed on that Internet browser. In fact, many anti-malware programs remove or block the DoubleClick tracking cookie. It does not help matters that the DoubleClick opt-out option is not a solution. Security analysts have found that opting out of the DoubleClick tracking cookie does not eliminate tracking based on the computer users' IP address. There was also a period when criminals took advantage of DoubleClick and MSN in order to deliver malware through a security exploit.

An Overview of the DoubleClick Tracking Cookie

While DoubleClick has the capacity to monitor your online capacity, ESG security researchers do not consider that DoubleClick is a severe threat to your computer's security. This tracking cookie behaves in ways that are typically associated with other tracking cookies, but does not actively attempt to steal information or harm the victim's computer system. Essentially, a tracking cookie is a text file that stores information related to the computer user's online activity. In itself, the DoubleClick tracking cookie does not present a threat. However, criminals can take advantage of the DoubleClick tracking cookie to obtain information that is confidential.

Understanding Cookies Like DoubleClick

A cookie is nothing more than a tiny text file that is saved on the computer user's hard drive. Cookies will usually store information designed to customize your navigation for a certain web page, such as keeping track of your number of visits or on which banners a particular website has displayed for a particular user. These kinds of uses are benign and not considered harmful. However, a malicious use of the DoubleClick tracking cookie can intrude on your privacy. In fact, many tracking cookies keep track of information that they should not have access to, often being used for advertising purposes. DoubleClick can keep track of different websites that a computer visits and the kind of advertisements that are displayed on those websites. In essence, rather than being limited to a single web page, DoubleClick follows its users around and records their online activity. This information can then be used to display advertisements targeted towards that particular computer user.

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Security Doesn't Let You Download SpyHunter or Access the Internet?

Solutions: Your computer may have malware hiding in memory that prevents any program, including SpyHunter, from executing on your computer. Follow to download SpyHunter and gain access to the Internet:
  • Use an alternative browser. Malware may disable your browser. If you're using IE, for example, and having problems downloading SpyHunter, you should open Firefox, Chrome or Safari browser instead.
  • Use a removable media. Download SpyHunter on another clean computer, burn it to a USB flash drive, DVD/CD, or any preferred removable media, then install it on your infected computer and run SpyHunter's malware scanner.
  • Start Windows in Safe Mode. If you can not access your Window's desktop, reboot your computer in "Safe Mode with Networking" and install SpyHunter in Safe Mode.
  • IE Users: Disable proxy server for Internet Explorer to browse the web with Internet Explorer or update your anti-spyware program. Malware modifies your Windows settings to use a proxy server to prevent you from browsing the web with IE.

If you still can't install SpyHunter? View other possible causes of installation issues.

Technical Information

Registry Details

DoubleClick creates the following registry entry or registry entries:
SOFTWARE\Microsoft\Windows\CurrentVersion\Run, value: (
SOFTWARE\Microsoft\Windows\CurrentVersion\URL\Prefixes, value: (
SOFTWARE\Microsoft\Windows\CurrentVersion\Backup, value: (
SOFTWARE\Microsoft\Windows\CurrentVersion\Shell Extensions\Approved, value: (
SOFTWARE\Microsoft\Windows\CurrentVersion\URL\Prefixes, value: (
SOFTWARE\Microsoft\Windows\CurrentVersion\Run, value: (

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