Editing Adobe Acrobat (section)

===September 2006 warning===
On September 13, 2006, David Kierznowski provided sample PDF files illustrating [[JavaScript]] vulnerabilities. Since at least version 6, JavaScript can be disabled using the preferences menu<ref>{{cite web
|url         = https://www.zdnet.com/article/adobe-turn-off-javascript-in-pdf-reader/
|title       = Adobe: Turn off JavaScript in PDF Reader
|first       = Ryan
|last        = Naraine
|date        = 28 April 2009
|work        = [[ZDNet]]
|publisher   = [[CBS Interactive]]
}}
</ref> and embedded URLs that are launched are intercepted by a security warning dialog box to either allow or block the website from activating.<ref>{{cite web
 |url         = http://www.eweek.com/article2/0,1895,2016606,00.asp
 |archive-url = https://archive.today/20130108143735/http://www.eweek.com/article2/0,1895,2016606,00.asp
 |url-status  = dead
 |archive-date = January 8, 2013
 |title       = Hacker Discovers Adobe PDF Back Doors
 |first       = Ryan
 |last        = Naraine
 |date        = 15 September 2006
 |work        = [[eWeek]]
 |publisher   = Ziff Davis Enterprise Holdings Inc
 |access-date = 5 August 2011
 |quote       = David Kierznowski, a penetration testing expert specializing in Web application testing, has released proof-of-concept code and rigged PDF files to demonstrate how the Adobe Reader program could be used to initiate attacks without any user action.
}}</ref>