Solved

Password Protection bypassed by Mac Preview

Posted on 2008-10-03
6
481 Views
Last Modified: 2013-11-12
We've created a password protected PDF and it works well, however, we recently learned that Mac Preview is able to open the PDF and ignore the password protection.

I don't have a MAC and I've searched high and low for this on Google to no avail... Need expert help.

Thanks!
0
Comment
Question by:pmagony
  • 3
  • 3
6 Comments
 
LVL 44

Expert Comment

by:Karl Heinz Kremer
ID: 22639239
This was a problem back in 2002 (http://www.planetpdf.com/mainpage.asp?webpageid=1976), but has since been fixed. Now you can even apply security settings in Preview. When you open a protected PDF document in Preview, you get a password dialog.
password-dialog.png
0
 
LVL 9

Author Comment

by:pmagony
ID: 22640653
I read that article too, but the problem here is that we are in 2008 and this is a brand new MAC.  The pdf is created on a windows machine using Adobe Acrobat Professional, then distributed accordingly.  

Preview simply ignores the security implementations.  
0
 
LVL 9

Accepted Solution

by:
pmagony earned 0 total points
ID: 22641254
As it turns out... Adobe warns all users that not all 3rd party software comply with best practices...

"All Adobe products enforce the restrictions set by the Permissions Password.  However, not all third-party products fully support and respect these settings.  Recipients using such third-party products might be able to bypass some of the restrictions you have set."

That's a really ugly stain on Mac's inability to upkeep best practices.
0
What Is Threat Intelligence?

Threat intelligence is often discussed, but rarely understood. Starting with a precise definition, along with clear business goals, is essential.

 
LVL 44

Expert Comment

by:Karl Heinz Kremer
ID: 22643217
What OS version is installed on that Mac?
0
 
LVL 9

Author Comment

by:pmagony
ID: 22644325
My guess is "whatever Mac ships with today", since its a brand new laptop he is using.  Perhaps Leopard, but I'm not 100% sure... this is my Client's, client.

0
 
LVL 44

Expert Comment

by:Karl Heinz Kremer
ID: 22644340
Which version of Acrobat was used to create the protected file? I assume you verified on a Windows machine that the protection in the file is actually working.
0

Featured Post

Free Trending Threat Insights Every Day

Enhance your security with threat intelligence from the web. Get trending threat insights on hackers, exploits, and suspicious IP addresses delivered to your inbox with our free Cyber Daily.

Join & Write a Comment

Update 21-May-2015: I temporarily removed the source code and the code snippets to make major changes to the program. Regards, Joe A recent question here at Experts Exchange piqued my interest, so I decided to provide a thorough solution and publ…
The Adobe PDF proprietary file format is recognized as secure and formulated. But these PDF files are also prone to corruption and any external threat like virus attacks, improper storage can hit PDF file integrity.This type of damages can make cruc…
In this first video of the three-part Xpdf series, we introduce and describe Xpdf, a library containing nine command line utilities that perform various functions on PDF files. We show where the library is located and how to download it, discuss its…
Sometimes we receive PDF files that are in the wrong orientation. They may be sideways or even upside down. This most commonly happens with scanned or faxed documents. It is possible to rotate the view of these PDFs with the free Adobe Reader produc…

758 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

17 Experts available now in Live!

Get 1:1 Help Now