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Didier – start blogging in June 2006

Blogging help to keep track things he does
Belgium security

Start with Apple II, basic not enough-  start write assembly

end of 80s: HP unix – there is security incorporated – multi user

file structure of PDF file format

found interesting: fundamental blocks that makes the PDF language

the strings & the name do not have to unique way to represent then you can have different way to represent – you can have canonical issue: can write same thing in different way/representation

PDF supports embedded file: most PDF reader does not allow execution of embedded file

McAfee & Sophos are the feq AV that can scan the embedded file in PDF

Exploit when open: execute malicious JavaScript that in turn will open another embedded PDF file – looking like you open a normal PDF file

Many malicious file that contain discussion china/tibet – interesting perhaps china gov