There is a whole industry selling software to protect data: full-disk encryption, rights management, key servers, the works. Almost none of it lives in an ordinary home or a two-person office. At home people protect a file the way the application in front of them allows. They type a password into WinRAR, or into Word, or into a PDF, and move on with the day. Here is the thing: none of those applications is a security product. WinRAR is a compression tool, Word is a word processor, Acrobat is a document viewer. They just happen to carry enough encryption to be used as a lock, and that is exactly why people use them. It is right there, it is free, and it needs no IT department.

PDF has a reputation as the boring, dependable file format – the one you reach for when you need a document to look exactly the same on every computer, forever. What gets forgotten is that PDF’s security model has been shaky since version 1.0, and its history includes an FBI arrest, a federal jury trial that helped define how the DMCA actually works, and – twenty years later – a fake GIF that hid a tiny working computer inside an image compression stream. This is that story, roughly in order, including the part where we were personally on the receiving end of it.

Have you got an Adobe PDF file that you can open but cannot edit, print or copy selected text to the clipboard? There is an easy solution: with just a couple of clicks, the file can be unprotected. Bad news: you’ll need software. Good news: we’ve built one for you.

19 years ago, on July 16, 2001, the FBI arrested Dmitry Sklyarov, almost immediately after his speech at the DEF CON hacker conference, on a number of charges by Adobe. Dmitry was accused of many things, from software trafficking to conspiring with Elcomsoft and “third parties”, who put up the software for sale that could bypass technological protection on copyrighted material. Dmitry’s career at Elcomsoft began with a project on gaining access to protected Access databases. Soon, Dmitry got an idea about the security of PDF documents, and so he started working on it. From this idea the never-to-be-forgotten Advanced eBook Processor was born, because of which Dmitry was arrested in 2001 at DEF CON in Las Vegas, NV.

We updated Advanced PDF Password Recovery to add Acrobat X support, recovering the original password and instantly removing various access restrictions in PDF documents produced by Adobe Acrobat X.

From time to time we’re receiving questions regarding various technologies used in our products, especially Thunder Tables™ and GPU acceleration. Today I’d like to explain what exactly Thunder Tables™ is (and what it’s not).