1. Wepawet,
http://wepawet.iseclab.org/
2. IBM : IBM X-Force 2010 Mid-Year Trend and Risk Report (2010)
3. Symantec : Symantec Global Internet Security Threat Report. Trends for 2009 (2010)
4. Parker, T.: Navigating the Internal Structure of a PDF Document,
http://www.planetpdf.com
5. Decalage: PDF Security Isseues,
http://www.decalage.info