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Super Cookie

Definition of Super Cookie

A Super Cookie, also known as a Flash Cookie or LSO (Local Shared Object), is a type of tracking cookie used by websites to collect and store data about users' browsing activities. Unlike regular HTTP cookies, Super Cookies are stored in different locations on a user's device, making them harder to detect and delete. They are typically used for tracking user behavior across multiple websites and sessions, allowing advertisers to build detailed profiles for targeted advertising.

Origin of Super Cookie

The concept of Super Cookies emerged as a response to users' increasing awareness and efforts to block traditional cookies. As web browsers started implementing stricter privacy measures, advertisers sought alternative methods to track users effectively. Super Cookies gained popularity due to their ability to persistently store user data, even after users clear their browser cookies.

Practical Application of Super Cookie

One practical application of Super Cookies is in online advertising and marketing. Advertisers use Super Cookies to track users' browsing habits, preferences, and demographics across various websites. This information is then used to deliver personalized ads tailored to individual users, increasing the effectiveness of advertising campaigns and maximizing ad revenue for publishers.

Benefits of Super Cookie

Persistent Tracking: Unlike traditional cookies, Super Cookies can remain on a user's device for extended periods, allowing advertisers to track users' behavior over time accurately.

Cross-Device Tracking: Super Cookies can track users across different devices, providing a more comprehensive view of their online activities and enabling targeted advertising across multiple platforms.

Enhanced User Experience: By collecting data on users' preferences and interests, Super Cookies enable websites to deliver personalized content and recommendations, enhancing the overall browsing experience.

Improved Ad Targeting: Super Cookies enable advertisers to target specific demographics and interests more accurately, resulting in higher engagement rates and better return on investment (ROI) for advertising campaigns.


While Super Cookies themselves are not inherently illegal, their use is subject to privacy regulations in many jurisdictions. Advertisers must comply with laws such as the GDPR in Europe and the CCPA in California, which require transparency and consent for tracking user data.

Blocking Super Cookies can be more challenging than blocking traditional cookies due to their persistence and varied storage locations. However, many browser extensions and privacy tools offer options to limit or block Super Cookies.

To protect your privacy from Super Cookies, regularly clear your browser cache and cookies, use privacy-focused browser extensions, and consider using browser settings or plugins that restrict third-party tracking and data collection. Additionally, be cautious about sharing personal information online and review website privacy policies to understand how your data is being used.


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