The sad thing is, this type of "censoring" a PDF has been demonstrated as broken 8 years ago: http://www.geek.com/news/army-censor-makes-technical-error-559981/

The sad thing is, this type of "censoring" a PDF has been demonstrated as broken 8 years ago: http://www.geek.com/news/army-censor-makes-technical-error-559981/ http://www.geek.com/news/army-censor-makes-technical-error-5...