Wow, Adobe rethinks PDF security. Curious why? Because of vulnerabilities in Abobe Reader (and so zero-day exploits), of course. From the article:
According to Finnish security company F-Secure, patching 48.9% of all targeted attacks conducted this year involved a malicious PDF file attached to a legitimate-looking e-mail, a huge change from 2008, when PDFs made up just 28.6% of targeted attacks.
But security model of PDF encryption/protection is not going to change, [un]fortunately. (more…)