The vulnerability allowed attackers to collect data from users who opened PDF files inside Chrome's built-in PDF viewer.

German academics have developed a new attack that can extract and steal data from encrypted PDF files, sometimes without user interaction. Named PDFex, the new attack comes in two variations and ...

And one measure of that data's relevance to foreign intelligence? The simple fact that the data is encrypted and that the NSA wants to crack it may be enough to let the agency keep it indefinitely.