What is AES-256 encryption?

You may have seen some VPN providers boasting about using AES-256 encryption, but it’s not immediately apparent what this ...
ZDNet

With 256-bit encryption, Acrobat 9 passwords still easy to crack

Following ElcomSoft's claim that despite the 256-bit encryption Acrobat 9 passwords are susceptible to more efficient brute forcing than Acrobat 8 passwords -- a claim that Adobe confirmed citing ...