PDF files usually seem harmless. People don’t think twice about opening a PDF, even if it’s an email attachment,  or reading one online.

Adobe has acknowledged a vulnerability in its Adobe Reader/Acrobat that allows hackers to hijack data from compromised computers. They are investigating the problem but haven’t come up with a patch yet.

You have two options: disable Javascript in Adobe Reader or use an alternate reader. The video below shows you how to do either option…

Get the Flash Player to see this content.

The alternate readers described in the video are:

Sumatra PDF

MuPDF Firefox Plugin

Further reading:

Adobe confirms PDF zero-day attacks.

How to mitigate Adobe PDF malware attacks

[Author's Note 1/18/2010] Adobe released a fix for Adobe Reader/Acrobat Jan 15th. If your software hasn’t automatically updated then go here for directions on how to update..
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