Eliminate Flash-spawned ‘zombie’ cookies

Woody leonhard
By Woody Leonhard

Way back in a 2008 column, I spotlighted one of the most insidious and least-known features on the Internet: Adobe Flash cookies that were not subject to the usual cookie rules.

Almost two years later, these special Flash cookies are still living in our PCs, and enterprising privacy-busters now use them to create zombie cookies — regular cookies that come back from the dead.

My Oct. 23, 2008, column, “Flash cookies are putting your privacy at risk,” described how data stored by Adobe’s Flash Player is beyond your browser’s control and how it could store more personal data than you’d suspect.

Flash cookies have now landed their manipulators in troubled waters. Last week, two well-known privacy attorneys, Dallas-based Joseph Malley and California-based David Parisi, filed a lawsuit in U.S. District Court for the Central District of California against Quantcast, a Web page–ranking and audience-statistics firm. (A July 27 Wired Threat Level story on the lawsuit includes a link to a PDF copy of the filed court documents.)

The lawsuit claims class action status and lists additional defendants — a Who’s Who of online players including MySpace, ABC, ESPN, Hulu, JibJab, MTV, NBC Universal, and Scribd.

This article is part of our premium content. Join Now.

Already a paid subscriber? Click here to login.



Get our unique weekly Newsletter with tips and techniques, how to's and critical updates on Windows 10, Windows 8, Windows 7, Firefox, Internet Explorer, Google, etc. Join our 460,000 subscribers!

Enter your email above to receive messages about offerings by Penton, its brands, affiliates and/or third-party partners, consistent with Penton's Privacy Policy.
The Windows 7, Vol 3 (Excerpt)

Subscribe and get our monthly bonuses - free!

The Windows 7 Guide, Volume 3: Advanced maintenance and troubleshooting provides advanced tools for keeping Microsoft's premier operating system up and running smoothly. Get this excerpt and other 4 bonuses if you subscribe FREE now!

= Paid content

All Windows Secrets articles posted on 2010-08-05:

Woody Leonhard

About Woody Leonhard

Woody Leonhard is a Windows Secrets senior editor and a senior contributing editor at InfoWorld. His latest book, the comprehensive 1,080-page Windows 8 All-In-One For Dummies, delves into all the Win8 nooks and crannies. His many writings tell it like it is — whether Microsoft likes it or not.