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Reblogged by cstanhope@social.coop ("Your friendly 'net denizen"):
ICYDK I've been recently live-streaming about file formats, including PDF, polyglots...
https://www.youtube.com/playlist?list=PL2-EpKoPE60Vh6z5zUOn6KRxB55NitlJf
Feel free to come up with suggestions, questions...
Soon the DOOM PDF too ;)
I'm also writing a hands-on book on PDF internals & hacking!!