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Flash Cookies, a Little-Known Privacy Threat 225

Wiini recommends a blog posting exploring Flash cookies, a little-known threat to privacy, and how you can get control of them. 98% of browsers have Macromedia Flash Player installed, and the cookies it enables have some interesting properties. They have no expiration date; they store 100 KB of data by default, with an unlimited maximum; they can't be deleted by your browser; and they send previous visit information and history, by default, without your permission. I was amazed at some of the sites, not visited in a year or more, that still had Flash cookies on my machine. Here's the user-unfriendly GUI for deleting them, one at a time, each one requiring confirmation.

An Ajax Reality Worth Worrying About 79

An anonymous reader writes "This article discusses the hype that currently surrounds Ajax and it's shortcomings. Reliable Ajax frameworks are still under construction, and you should worry about navigation history, bookmarkability, feedback, persistence, concurrency, and security. This article will help you avoid the major problems inherent in Ajax development."

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