Brute Force and Dictionary attack

I’ve supposed to select «Brute force vs. Dictionary attack» for this post. But I don’t want to compare them, instead, I want to introduce some links and websites that do this.

What is a Brute force attack?
http://en.wikipedia.org/wiki/Brute_force_attack 

And what is a Dictionary attack?
http://en.wikipedia.org/wiki/Dictionary_attack 

You can find the differences between these two ways for finding a password. But there are some authors that tell you more like the following link:

https://www.infosecisland.com/blogview/6131-Brute-Force-vs-Dictionary-Attacks.html

Introducing a worm : One of the worms that uses from Dictionary attack is Conficker

PDF Unlocker

There are some softwares that enable you to remove limitations from PDF files(whether Web Application or Windows Application) . if you can’t copy PDF text to clipboard or your PDF files have any other limitations, these softwares assist you to remove their security and protection…

Some softwares;

http://www.unlock-pdf.com

http://www.ensode.net/pdf-crack.jsf

http://freeware-pdf-unlocker.en.softonic.com

You just have to go to google and search «pdf unlock» to give you many results. hah, what an easy way:D

Good Luck!