Those « types » of memory combined together are the full size of your ram, in my case 8Gb. Each type as a specific function in OS X those are described below :

Free:

This is RAM that’s not being used.

Inactive:

This information in memory is not actively being used, but was recently used.

For example, if you’ve been using Mail and then quit it, the RAM that Mail was using is marked as Inactive memory. This Inactive memory is available for use by another application, just like Free memory.  However, if you open Mail before its Inactive memory is used by a different application, Mail will open quicker because its Inactive memory is converted to Active memory, instead of loading Mail from the slower hard disk

Wired:

Information in this memory can’t be moved to the hard disk, so it must stay in RAM. The amount of Wired memory depends on the applications you are using.

Active:

This information is currently in memory, and has been recently used.

As you can see, the inactive memory is used for fast access to an application, and sometimes if happened that the memory is not released by OSX or not shared.  This can make the mac really slow and buggy. As I got the problem I searched for a solution I found that one :

• If you do not have the developers tools installed, install them.
• open a shell and type in the following command :

$/usr/bin/purge

Since the FBI announced that megaupload had been closed due to the illegal content they were providing to their users, I have seen a lots of complains, articles speaking about alternatives, and anonymous attacks against multiple websites such as Justin Bieber, but what is the impact on my life ?

Since 2005 i was used to exchange files and download (legal) files via megaupload, and now I will have to use another way to exchange my files. I used megaupload at least 4 to5 times a day, but hopefully as an IT Security Student I never trusted megaupload and never upload personal, or private content.  But I can imagine that some people did and they lost almost everything (if it was their only backup) which I think it’s funny (but only because I’m evil).

But with the closing of megaupload, and the deletion of all the illagal content on all the other websites (videobb) I’m pretty sure that many people will have much more time to spend on fancy cool stuff they never did anymore since 2005.

• Discovering the television again 
• Reading Books
• Programming a new megaWhatEverWebsite 
• Join the Anonymous to help with the #OpMegaupload
• Learn to hack to become Hacktivists
• Wait 2 years before the next episode of chuck arrives in the UK

The FBI website states that megaupload.com  is generating an amount of 175million dollars, and that they cause more than half a billion dollar harm to multiple companies and copyright owners.  Some of the servers of megaupload were located in the state of Virginia, it was thus easy for the FBI to take down all the servers.

Seven individuals have been charged, the boss (kim dotcom)  and his associates.

• Finn Batato, 38, a citizen and resident of Germany, who is the chief marketing officer;
• Julius Bencko, 35, a citizen and resident of Slovakia, who is the graphic designer;
• Sven Echternach, 39, a citizen and resident of Germany, who is the head of business development;
• Mathias Ortmann, 40, a citizen of Germany and resident of both Germany and Hong Kong, who is the chief technical officer, co-founder and director;
• Andrus Nomm, 32, a citizen of Estonia and resident of both Turkey and Estonia, who is a software programmer and head of the development software division;
• Bram van der Kolk, aka Bramos, 29, a Dutch citizen and resident of both the Netherlands and New Zealand, who oversees programming and the underlying network structure for the Mega conspiracy websites.

Kim, Finn, Mathias and Bram have been arrested today by New Zealand authorities, while the others are still on the run.

At the moment I just imagine all the people that uploaded something which is not infringing copyrights and how they feel.  As a student i used to use megaupload to store some  data or file when I didn’t had my USB key … or some other crap,  and it was easy … I imagine also all the people who had paid accounts … etc.

Anyway, I believe that megaupload will not come back soon and that multiple other companies which are offering the same services will have many new customers in the next couple of hours !

These bills will allow the US government to censor websites.

To understand SOPA/PIPA  I invite you to read the following paper:

http://blog.reddit.com/2012/01/technical-examination-of-sopa-and.html

and to have a look at the following video from the Anonymous group.

I invite you also to retweet the following link http://sopastrike.com/on-strike/

See you soon.

The first step is to include the package :

\usepackage[nonumberlist]{glossaries}

\usepackage{acronym}

\makeglossaries

\newacronym{gui}{GUI}{Graphical User Interface}

\newacronym{sdk}{SDK}{Software Development Kit}

\glsaddall

\printglossaries

The first command list all the entries in the glossary, while the second prints the glossary out. In your text you may now use it such as following :

This is the \gls{gui} of my application. This \gls{gui} will display all the information[...].

and this should appear :

This is the Graphical User Interface (GUI). This GUI will display all the information[...].

Compile your LaTeX document a first time and then open a shell an type the following command:

makeindex Master_Thesis.glo -s Master_Thesis.ist -t Master_Thesis.glg -o Master_Thesis.gls

Compile your document with LaTeX a second time, and your glossary should appear right there.

and that’s it !

Below is a basic example of a LaTeX file with glossary :

\documentclass[12pt,a4paper]{report}
\usepackage[nonumberlist]{glossaries}
\usepackage{acronym}

\begin{document}

\title{}
\date{}
\maketitle

%Glossary
\makeglossaries

\newacronym{pdf}{PDF}{Portable Document Format }

%Abstract

\begin{abstract}

\end{abstract}
%Acknowledgments
\chapter*{Acknowledgements}

\tableofcontents
\listoffigures
\listoftables
\glsaddall
\printglossaries
\end{document}

Have Fun with LaTeX.

Long story short :

To make it work, the hacker needs to know the « save » e-mail address, and hope, this address has been deleted.

When you forgot your password it is possible to ask hotmail to « Email me a reset link« , when clicking on this link hotmail  shows the user the e-mail address to which it is going to send the reset link, for example :

my*****@hotmail.com

But in a few cases, this e-mail address might have been already deleted by hotmail (if you didn’t used it anymore, or if the target didn’t used it anymore), to verify that fact, the hacker can simply  return to the following link:

« Can’t access your account » (on the sign-in page)

From there the hacker can tick the  « I forgot my password » radio button,  following the link the hacker will find the page displayed below :
And here comes the trick :

IF the address does not exist anymore, the hacker will receive the following message :

If hotmail returns the following message the trick is to « recreate » this e-mail such as creating a new account, and then restore the password from the account you wanted to get the password back at first.

And that’s it, hotmail will not verify that the previous e-mail had been deleted or not, it will simply send you the restore password link.

Have fun.

After this small conversation, I began to freak out about my mac being stolen and my projects and personal data being published on the internet so I decided to encrypt my drive, and my fist thought was to use truecrypt or  firevault on my mac, but I wasn’t sure to like the fact that my drive would be totally encrypted and that I would not be able to use a forensic method if my drive was crashing. Therefore I finally decided to create an encrypted folder on my mac.

This is the way of doing it step by step:

• On your desktop create the folder that you want to encrypt ( in my case « Projects »)
• Open the Application folder and open the Utilities folder
• Open the Disk Utility application

From an existing folder:

in the Disk Utility application :

• Goto « file » -> « Disk Image From Folder »
• Chose the folder you want to encrypt (in my case « Projects »)
• Chose the encryption (the stronger the best)  AES 256 bit
• Enter your Pass-phrase  (PLEASE) do not use 5 chars ! *

• Click on
• The process of creating you encrypted folder will begin.

From a non Existing Folder:

As you may see the folder is an image (Projects.img) which means that you can mount and unmount the encrypted image or even copy it to an USB drive.

• Goto « File » -> « Blank Disk Image »

Encrypted Disk Image

• Choose the Size (I took 8.3 GB)
• Choose the Encryption (AES 256-bit)
• Click on Create
• Enter your pass-phrase

Now you will find a encrypted folder on your Desktop at any time, and when you will click on it, it will ask you the pass-phrase to open it.

And That’s it.

–

*To be secure a password rely on:

• On the letters you are using ( A-Z, a-z)
• On the numbers your are using (0-9)
• On the special chars ( @, /, !, #, etc)
• BUT ALSO on the length of it

using a password like the following  « ABd2@ »   will be anyway less secure than using  « ThisIsMyPasswordAndILikeToWearLargeJeansBecauseMyFavoriteNumberIs42″ so please consider using a nice and long and secure password.

Steve jobs 1955 - 2011

Rest In Peace.

In Mac OS X Lion and Previous versions, a  tool for connections test was existing (e.g.  Utilities -> Network Utilities ) but it was not dedicated to Wi-Fi. However this one is, and is accessible at :

 /System/Library/CoreServices/Wi-Fi\ Diagnostics.app/

To access it :

• Open the Terminal
• Copy, paste the previous Link in the Terminal preceded by « open »

 open /System/Library/CoreServices/Wi-Fi\ Diagnostics.app/

• Press Enter

You should see  the following window appear on your screen (Open your Wi-Fi):

As shown above, you will have the choice between four options, lets resume them fast :

Monitor Performance:

This option will give you a few information about the Wi-Fi connection you are using, and the signal rate etc ( such as shown in the print screen below )

You will the be able to export all the data into a PLIST (XML) file.

Record Events :

This will allow you the possibility to monitor all the events appearing on your Wi-Fi. ( This could be useful when you know that a friend is trying to hack your Wi-Fi for fun )

In this case you will be able to export everything as well in a Plist file.

Capture raw frames :

This option will allow you to capture data going on the network,  going to and from your computer, or data that could be listened on other networks :

Below You might see the capture Process :

To see the data, you will have to click on continue and export the data, finally a ZIP file will be created with a Plist file and a PCAP file that you will be able to open with a tool such as wireshark.

Turn On debug logs :

This option is just a log system about your connection. Most of the information received are kernel calls.

Now you will be able to monitor your Wi-Fi connection in the best way.

And that’s it.

[Source]

chflags :

The chflags utility modifies the file flags of the listed files as specified by the flags operand.

To make the ~/Library folder visible you may follow these steps :

• Open the Terminal and type :

 chflags nohidden ~/Library/

• Press enter

Now that your folder is visible, you might also use  this command in the terminal to see the flags of the folders in the current directory.

 ls -lO

The above command will print out in your Terminal the following output  when a folder is hidden :

 drwx------@  53 noktec  staff  hidden 1802 Aug 00 00:00 Library

And that’s it

[source]