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Tech journalist since the dark ages. Windows Secrets, LangaList newsletter, Windows Magazine (NetGuide, Home PC), Byte, Popular Computing, yadda yadda yadda. Google me, if it matters.

This feed is mostly personal interest; it's NOT my professional writing. There's tech here, yes, but also lots of general science and some politics and weird humor thrown in.

Thursday, February 17, 2011

A new security threat arrives: "Evercookies"

Reader Rome Arnold was alarmed to learn of a new kind of cookie.
  • "Is it correct that private browsing does not block the placement of Evercookies (or permanent cookies) on your computer, no matter whether you are using Firefox, Chrome, IE, or Safari?

    "From what I read on the Net, these Evercookies are very difficult to clean because they are placed in multiple locations and can self-regenerate."

Evercookies are indeed real: The author of the Samy worm invented and released a new tool for creating permanent cookies that evade classic cookie-management tools.

Evercookies hide themselves in eight different places, and they can regenerate themselves if you delete them....

That's the start of my current Q&A columns published in this week's Windows Secrets. I discuss what Evercookies are, how they're created, what they do, and how to block and remove them. I also discuss "Local Shared Objects" and similar cookie-like data-storage mechanisms that can also evade basic cookie-management tools.

Other reader-submitted questions answered this week:

  • Coping with generic error messages
  • Solved: System Restore disk creation failure
  • Password managers need strong passwords
Here's the full issue run-down:

The following link includes all articles this week: http://WindowsSecrets.com/comp/110217

Free content posted on Feb. 17, 2011:

Paid content:

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