Live briefing

Everything about Evercookie

JavaScript application programming interface

Evercookie was an open-source JavaScript application programming interface (API) that identifies and reproduces intentionally deleted cookies on the clients' browser storage. This behavior is known as a zombie cookie or supercookie. It was created by Samy Kamkar in 2010 to demonstrate the possible infiltration from the websites that use respawning. Websites that have adopted this mechanism can identify users even if they attempt to delete the previously stored cookies. Wikipedia →

🧭 Start here: a 6-step reading path

Read the overview: EvercookieA 5-minute orientation
Pick up a classic book: Best-ever cookiesThe most-reprinted book on the subject
Go sideways: Zombie cookieA closely related topic
Go sideways: Web trackingA closely related topic

📖 Definitions

Noun A special kind of HTTP cookie that is especially resistant to deletion by the user.

🗂️ The subject at a glance

🏆 Landmark papers (most cited)

No matching papers found.

📚 Books worth reading

Best-ever cookiesGooseberry Patch (Firm) · 2010

Ranked by number of editions on Open Library, a rough measure of how lasting a book is.

🔗 Related topics

Zombie cookie A zombie cookie is a piece of data usually used for tracking users, which is created by a web server while a user is browsing a website, and placed on…
Web tracking Web tracking is the practice by which operators of websites and third parties collect, store and share information about visitors' activities on the World…
HTTP ETag The ETag or entity tag is part of HTTP, the protocol for the World Wide Web. It is one of several mechanisms that HTTP provides for Web cache validation…
Samy Kamkar Samy Kamkar (born December 10, 1985) is an American privacy and security researcher, computer hacker and entrepreneur. At the age of 16, he dropped out…
Canvas fingerprinting Canvas fingerprinting is one of a number of browser fingerprinting techniques for tracking online users that allow websites to identify and track visitors…
HTTP cookie An HTTP cookie (also called web cookie, Internet cookie, browser cookie, or simply cookie) is a small block of data created by a web server while a user…
Internet privacy Internet privacy involves the right or mandate of personal privacy concerning the storage, re-purposing, provision to third parties, and display of information…
Ashkan Soltani Ashkan Soltani is a privacy and security researcher. He was formerly the executive director of the California Privacy Protection Agency. He has previously…