Once again, Adobe has confirmed a gigantic security hole in their buggy, bloated, and completely insecure Adobe PDF Reader application. This isn’t the first time, either—it’s like a non-stop barrage of security holes from Adobe products.

There’s also no antivirus application checking for this security hole, so don’t think you’re safe yet… the latest hole requires disabling Javascript in Adobe Reader, and to do that, you’ll need to head into Edit –> Preferences, and then find the JavaScript category on the left-hand side.

Once you are there, you can disable JavaScript by simply unchecking the “Enable Acrobat JavaScript” box. This setting is probably safer in general, though it will slightly limit functionality.


You can also fix the security hole by completely uninstalling Adobe Reader and using an alternative—something like Sumatra PDF, my personal favorite lightweight PDF reader.

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Lowell is the founder and CEO of How-To Geek. He’s been running the show since creating the site back in 2006. Over the last decade, Lowell has personally written more than 1000 articles which have been viewed by over 250 million people. Prior to starting How-To Geek, Lowell spent 15 years working in IT doing consulting, cybersecurity, database management, and programming work.
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