Hussein's Blog

Mxdperfstat 10.1 Download MXD Performance Statistics

2013-04-22T16:29:00.001+03:00

If you are here chances that you were like me searching for an ArcGIS 10.1 version of this wonderful tool. Well, there isn't any, but I managed to make it work by copying some 10 dependency dlls. (Version , System and few others, took me awhile to figure them out)

If you don't know what this tool is, this is it's description from ESRI site

MXDPERFSTAT (ArcGIS 10 and 93) can help diagnose typical MXD document performance problems, e.g.
• Inefficient scale dependency
• Slow symbology
• Large features
• Projection on the fly
• Potential database tuning

System Requirements:
1. Microsoft .Net Framework
2. ESRI .NET Assembly 10 or 9.3.1
a. ArcGIS Desktop with .Net support or
b. ESRI Engine Runtime
3. ESRI license:
a. ArcGIS Engine runtime or
b. ArcGIS Desktop

This tool will work on ArcGIS 10.1, extract and use,

Download here

If you want the 9.3 or 10 version of this tool click here.

Fetch URL Text from Android/Java Application

2013-04-19T13:35:00.001+03:00

I searched a lot for a straight forward clean multithreaded code to do this simple task, read data from a URL and get the output. All I found were segments of codes that force close.

So I wrote a simple class do this task.

Create a new Class name it FetchURL and past this whole thing into it.

//Hussein Nasser 19-4-2013
//www.husseinnasser.com 
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.URL;
 public class FetchURL {

 private String output;
 private String url;
 
 public FetchURL()
 {
  output = "";
 }
 
 public String getOutput()
 {
  return output;
 }
 
 
 public void Run(String u)
 {
   url = u;
    Thread t =  new Thread() {
         
       public void run() {
                   
         // Toast.makeText( mycontext , "running thread bitch", Toast.LENGTH_LONG).show();
                   
                    URL textUrl;
               try {
                 
                textUrl = new URL(url);
                
                BufferedReader bufferReader = new BufferedReader(new InputStreamReader(textUrl.openStream()));
                 
                String StringBuffer;
                      String stringText = "";
                while ((StringBuffer = bufferReader.readLine()) != null) {
                 stringText += StringBuffer;
                }
                      bufferReader.close();
                 
                      output = stringText;
                    
               } catch (Exception e) {
                // TODO Auto-generated catch block
                //e.printStackTrace();
                 
                output= e.toString();
               }
              
                }
            };
             
           t.start();
      try {
   t.join();
  } catch (InterruptedException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  }
  
 }
 
 
 
 
}

To use the code in your main activity

//Create an Instance of our Class
     FetchURL fu = new FetchURL();
     
     //run this shit (this will pause your current activity until you get the result, this should return 123 
     fu.Run("http://geshout.com/version.txt"); 
     
     //You are clear, your activity is now active and get your string and do Whatever you want 
     String o = fu.getOutput();
     
     //Cheers!
     Toast.makeText(this, "output " +   fu.getOutput(), Toast.LENGTH_LONG).show();

This code allows you to read and execute PHP URL, almost anything that returns HTML I guess, anyway report any bugs to me. This code uses threading to execute the network capability And oh, make sure you have the internet permission on your Android Manifest.

.NET Microsoft Performance Counter does not match Task Manager

2013-01-16T13:41:00.002+03:00

I have been struggling with this for a while now. I was asked to display the CPU usage for a list of windows servers remotely from one machine. So I wrote a piece of code that does just that using the Performance Counter. Only to find out that it returns inaccurate CPU data. I tried reading more than once, taking the normal distribution of a list of values nothing worked.

After a while it appears that you have to read .netValue once then sleep a while then read it again . Yes that is it. This fixed the problem.

Here is the code to get the real value of CPU matching the Task Manager

Public Function getCPUPerformance(ByVal remoteHost As String) As String

Dim userHandle As New IntPtr(0)

LogonUser("username", "domain", "password", LOGON32_LOGON_INTERACTIVE, LOGON32_PROVIDER_DEFAULT, userHandle)

Dim identity As New WindowsIdentity(userHandle)

Dim context As WindowsImpersonationContext = identity.Impersonate()

Dim cpuUsage As PerformanceCounter

cpuUsage = New PerformanceCounter("Processor", "% Processor Time", "_Total", remoteHost)

Dim val1 As Single = cpuUsage.NextValue()

val1 = cpuUsage.NextValue()

Thread.Sleep(50) 'You have to Sleep, otherwise you will get kinky results

val1 = cpuUsage.NextValue()

Return val1

End Function

ESRI: Registration Failed, Could not write to disk.

2012-12-24T08:29:00.004+03:00

ESRI, ESRI ESRI...

You get everybody confused with your messages.

Why it happens?

Chances that you are here because you encountered this error and you don't know how to fix it. Well the fix is easy but ESRI like to waste your time instead of displaying a little more informative message it just slam whatever the OS returns right back at you.

Anyways, this error usually appear because you were trying to install a new extension on your ArcGIS desktop environment (I assume 10 and above). It ESRIRegAsm.exe to register their dlls, whatever launches this executable must have Administrator privileges because

The Fix

Run as Administrator.

If you are running ESRIRegAsm.exe manually, run the Command prompt (cmd) as administrator.

If this error pops up because you installed some exe setup file, then run this setup file as administrator.

If you are running an MSI file (Windows Installer, they look like this ) , for some reason you cannot right click and run as administrator, so you can use this method.

P.S.: Yes, you have to run as administrator even if you are an administrator on that machine, yeah, don't ask.

He's dead, Jim! [Chrome Error]

2012-12-18T08:58:00.002+03:00

Its the 18 of December, I just returned to work from a 4 days vacation national day. I started checking my blog only to get this new error message from google chrome that I never seen before.

Who is Jim Google?

First Android Game: Guess the Shoes

2012-11-26T09:06:00.003+03:00

Really simple game I wrote for android phones just for the ladies, guess the shoe designer and get points , score as much as you can!

Download game here

Stock Market vs Moon Phase

2012-09-13T10:10:00.000+03:00

Moon Phase vs Stock Change

Stock Market has been always tricky and unpredictable, financial analysts come up with theories everyday to predict the drop or increase of a given stock market. They do this by analyzing many factors including politics, yet analysts keep getting dazzled on how the market can get kinky sometimes.

OK, we keep linking the price change to parameters in our daily life, some war in Greece, or some new Apple product but why we didn't think of projecting this stock change against something global? Something that we can't control, something from nature, something politics can't control, something beyond earth. I'm not really being superstitious here its just when I tell you what I found It will give you some fruits for thought.

The Work

Now I have dates and I have prices, I can extract Year, Month and Day from the date but with some little work and a help from the startdate guys I can calculate, yes, the phase and illumination factor of the moon and then project it on the price. To try that out I selected Ahli United Bank (AUB) as my testing subject, and pulled 2600+ worth of stock data prices since 2000 till 2012 from the Bahrain Stock Exchange. I Formatted the data and post it to Google Spread Sheet.

After that I used Google Visualization API to create some sexy charts out of that. In a nut-shell, this is my result. click down to see the website.

Stock Market vs Moon Phase Website Chart AUB

Here are some snap shots

Findings

2012 AUB New Moons are 93% safe, they either Hold the stock price or increase it. So if someone wants to sell its good to select a New Moon date (Somewhere between 15 and 16 September). Lets monitor that until the rest of the year.
2012 AUB Waxing Gibbous Moon (Near to a Full Moon) (Spans from 24-27 September) is dangerous there is a 50% chance that the stock will drop.
So I would say for AUB it is good to buy on Waxing Gibbous Moon days for AUB and then sell them on the next New Moon.
Each year the correlation differs for some reason if I bring another variable into the story I might find the relation.

Now the findings might differ of course from one company to another but it is essentially the formula.

Visit the website and you can even find more.

Disclaimer: This is just fruit for thought, a new edge if you will. I searched the net and no body have done it before so I said why don't I do it.

Gauss hacks its way into National Bank of Bahrain Internet Banking [VIDEO]

2012-08-26T11:04:00.002+03:00

Apparently Gauss Worm was not satisfied by just hitting BBK as it is seeking it's way through NBB's Internet Banking as well. Here is a video that shows how it can pulls customers credentials easily from NBB secured internet Banking

Refer to original post for details of how to prevent the worms effects Gauss Worm Targets Bahraini Banks [BBK].

Watch Video

Here is a YouTube Version

Meet gamika, an empty page, unlimited possibilities

2012-08-25T23:14:00.000+03:00

twitter, facebook, ask.fm, yahoo answers, wikianswers, and many more.

These are services created so that people like you and me share their thoughts, questions, opinions and theories with others.

So what is the problem of these services? They need to know who are you, they need to register your name, email, numbers, references, address and so much more. They eventually violate your privacy.

We tend to think twice before writing anything in these services, because they know us, they know what we are doing, they track us, they target us with ads, and people following us will judge our tweets, status updates, questions and all of it.

There is no empty page on the web where anyone can write anything they are thinking of where everybody can see. No registration.

gamika.org was built just to do that.

go write something now.

www.gamika.org

Hussein Nasser

Which Online ?

2012-08-22T12:02:00.001+03:00

Which Online Marketing method is the best?

Which Online Banking is the most trustworthy?

Which Online Shopping site is the busiest?

Which Online Security algorithm is the most efficient to be used to secure the web?

Which Online Cloud storage will prevail?

Which Online compressing algorithm can be used to replace ZIP and RAR?

Which Online Gaming zones are the fastest?

Which Online Streaming Movies website are available?

Which Online radio are in the market?

Which Online sports channel are the easiest to subscribe to ?

Which Online cars broker sites can I use?

Which Online Money currency to replace the dollar?

Which Online Payment methods are the most secure and efficent?

Which Online Chatting Apps are the most flexible and easy to use?

Which Online Live News site shall I follow to know everything?

Which Online Fashion Designers recommendation shall my wife subscribe to?

Which Online Cartoon Network shall I let my kids in?

Everything is moving online, there are plenty and abundant of ideas, stop keeping your ideas secret, no one will try to steal it.

Ideas in secret die. Select an Online Idea and go do it.

Nokia could have done better

2012-08-14T08:53:00.002+03:00

Nokia had a choice to go with Andriod as everyone else did, or stay arrogant and stick to its dying Symbian.

It did neither, in Feb 2011, Nokia entered a partner-ship with Microsoft, Nokia would use Windows as their primary mobile OS, Microsoft will use Nokia as their hardware maker.

16 Months later, Microsoft announced Surface Tablet, which Microsoft built on its own, behind Nokia's back.

But Microsoft, you had Nokia as your hardware vendor, why you didn't hand the surface to it?
"Its a Branding Thing"

In other words, Nokia brand sucks, imagine the Surface with the Nokia hand on it?

I mean I would buy an Android powered Nokia device. Microsoft Powered Microsoft Device? maybe. Microsoft powered Nokia device? I'll think twice.

This is the moment where the Thai hooker takes the blade and cuts herself. I bet Stephen Elop is biting his nails.

Gauss Worm spans to Bahraini Banks [BBK Online VIDEO]

2012-08-13T10:03:00.001+03:00

You must have heard the news. A new worm capable of stealing sensitive financial data from selected websites. Banking deals documents, retail and corporate password accounts, browsing history, all being picked up by the worm and sent through an SSL secured channel to multiple servers across the world.

This worm spread through a network whenever it finds an active directory. This worm (Codenamed: Gauss, W32.Gauss ) is clearly being funded by a country because, ready for this?, it only hit the middle east so far. Lebanon, Israel and a part of Saudi Arabia is affected. However, today I found a proof that the Gauss worm is targeting Bahrain as well.

I downloaded a quarantined version of Gauss (a dead worm for security researchers) in order to analyse it on my lab (as I usually do with new worms and viruses for the past 11 years). I enabled debugging mode and tested the worm against some Banks in Bahrain, in order to see:

What Bahraini Banks are listed in Gauss Worm Database
How can the attack be prevented in the case the bank is listed.

To my astonishment the following banks are affected by Gauss Worm.

National Bank of Bahrain (NBB)
Bank of Bahrain and Kuwait (BBK) [BBK Online]
Ahli United Bank (AUB)

Here is a video with my findings testing BBK website, the same test succeeded with AUB and NBB.

Gauss reads BBK login as plain text
Language: ASP.NET
Click here to download HD version of the video

Watch Video

Gauss reads NBB login as plain text
Language: ASP.NET

Gauss reads AUB login as plain text
Language: JSP

Findings

How it Works

Once the Gauss worm is installed on the system, it activates Bit Slicing (Not sure what that is yet)
When the user visits any website, it will check if the website is listed in Gauss Database.
If found, the worm fetches the index of the bank website, which bourse it is listed in and its URL.
The worm starts listening for any input sent to the site.
If any password/username combination is detected (using HyperThreading module) it will send the password to multiple servers across the globe (Mainly Malaysia and China)

After some research, I found out that the worm uses Windows Hook API to hook into a running Internet Explorer instance and fetch the passwords as it's being sent to the Browser.

The Good

Gauss can not read passwords out of Google Chrome [Tested]
Gauss can not read passwords out of FireFox [Tested]
Gauss can not read passwords out of Safari [Not Tested But can be confirmed]
Gauss can not read passwords out of Safari [Not Tested But can be confirmed]

The Bad

Gauss can read passwords out of Internet Explorer Browser [Tested]
Gauss doesn't use Phishing [Tested]
Guass doesn't use Phraming [Tested]
Guass doesn't use any key-logging techniques [Tested]
Guass doesn't pass by SSL [Tested]
Guass doesn't use Screen Capture [Tested]
Gauss cannot be detected by any anti-virus yet (13/August/2012)

How to Plug the Holes

Prevention
Once the problem is found the solution to prevent it is relatively simple. The banking websites are not efficiently written in the client side and can be easily scanned for a credential combination. Disabling Right click will not stop anyone from looking into the source code of the page, however making the code very difficult to comprehend by using multiple modules and less javascript in the main page will.

Morever, virtual keyboard can prevent conventional keyloggers from capturing key-strokes before they are sent to the page but once the characters are in the page, there is no method of protection against other processes scanning them.

Banking websites should also implement dynamic HTML instead of static HTML, and properly secure their javascript code.

Of course there is more to this worm than this, it is fully described here.

I'm willing to give more technical details on how to secure the website against future attacks.

Cure
EDIT: There is a way to cure the worm after it hits you here is a full guide.

EDIT2: Adam Kujawa wrote a good article about the Gauss worm here, describing the sources and the mystery components.

Major HD Cables Comparision

2012-08-03T13:43:00.001+03:00

HDMI VS DiiVA vs DisplayPort Vs HDBaseT video technology

Find Duplicate Attributes in an ESRI Geodatabase

2012-07-29T14:22:00.001+03:00

I snapped this idea from ideas.arcgis.com,

I have been looking for a GP tool that can be used to find and list duplicate attribute values in an attribute table since ArcGIS 9.3. I was able to find a SQL script for this purpose in the GDB Management Island at the 2012 UC, but I would have to Remote Desktop into another machine to run this process.
If the duplicate ID values can be found and listed using a GP tool, that would be helpful in my organization's workflow process.

Until ESRI implements this, here is a quick script (download here) I wrote for you guys to do just that.

Open ArcMap
Go to customize
Go to Commands
Scroll until UI Controls
Click NeW UIControl and select button
Drag the new button anywhere in the toolbars
Right click on the new button and click view source (make sure you are still in customize mode)
Paste the code and run,
you must first select the layer you want to find the duplicates in and then click the button, there you will be prompted to type-in the field name..

Batch Compact ESRI Map Document (MXD)

2012-07-22T14:12:00.001+03:00

Do you have lots of Map Documents with huge sizes?

Compact them all with one click with this tool to more than 60% of their actual size.

Download Compact MXD Tool.

1) Just open an empty ArcMap session
2) Run CompactMXD.exe
3) Select the path where your Map Documents are located.
4) Click Compact.

I have implemented this guy's idea .

ESRI Geodatabase Downgrade Tool

2012-07-22T10:01:00.003+03:00

Most of you must have at least few 9.x (9.2, 9.3, 9.3.1 hopefully no 9.1) while your main production ESRI geodatabase is in 10.x you must face it frustrating that your 10 data won't work on 9.x machines.

Here is a simple tool to use to "Downgrade" any geodatabase to a 9.x version.

Open ArcCatalog

Navigate to the tool.

Double click on Downgrade GDB tool.

Select your 10 gdb

Enter the information

The output will be in the same folder

The result will be the same as your selected gdb plus a 9x suffix.

Enjoy.

Global Economic Crisis and Natural Disasters Quantum Detector (Paper)

2012-07-13T16:31:00.000+03:00

For a while now I've been working on a paper, an idea, a theory that will not change the world. It is not the best idea in the wild, It will not go viral, it cannot be comprehended by most of readers. Not because it is bad, but because it does not fall within the set of mediocre ideas I came up with during the last few years. I will give you an appetizer and until the main course is ready you may request a private read here and I'll send you the paper when the whole thing is riped and baked.

Quantum Mechanics in a nut-shell is the set of laws that take over the classic laws of physics when we go to the quantum (very small) scale. The thing is that these laws can surprise you. They don't obey gravity, momentum , velocity or every-action-has-a-reaction kind of laws.

Imagine we can tap into the very small building bricks of our lives, our "quantum life", look at the small things we do, the color of your coffee mug in the morning, the size of your shoes, the lifetime in seconds of google page, how many times did you say the word 'Euro' in a month, and mold this data into a information. Information only an engine smart enough to detect patterns in this small scale parameters and use them in congestion with catastrophic events, to lets say predict the next earth-quick in Haiti, or the upcoming potential global or domestic economic crises by mining the quantum history, events, tweets, and other live information of a given geographic location by proposing a self-learning quantum mechanical prediction engine.

Imagine A System that you can feed a date, an event and a geographic location to and displays a percentage of the likelihood of that event occurring on that location, time dimension.

Request a private read here if you would like to have access to the paper when it is finished. You will receive a mail with a link by July, 2013. Mark your calender.

Microsoft BizTalk will be rendered moot, here is why

2012-07-11T12:53:00.001+03:00

Back in 2000, long before the cloud fuss start, Microsoft saw a market for integrating different systems together, it had to come with a solution to properly mash systems together in a controlled enviroment. Bang!, BizTalk was born and it was a success indeed. Over 8500 users are using this software since.

BizTalk wasn't easy to develop at all, If you have integrated systems before you will know how dirty it is. Why? Because you are not maintaining only your product, you are interfacing with others', so if one those systems went kinky for some reason your entire product will collapse. Plus, with each hot fix in these systems you have to patch your system as well to preserve the compatibility. So you can imagine how dirty it is for Microsoft to keep maintaining BizTalk. So if you are frustrated why BizTalk is not supporting Oracle 11g maybe now you have an idea why.

Ten years later, lots of other products were born including Azure AppFabric (Microsoft Cloud product) Microsoft found out that the features are being replicated between Azure and BizTalk. No wonder, because technically, and if I can phrase it right, BizTalk is nothing but a "private" cloud in an organization while AppFabric are a set of apps interconnected in a public cloud. Make AppFabric private and you get a BizTalk.

ESRI saw it before Microsoft did, they launched ArcGIS Online (cloud based mapping), they quickly scrapped their existing old ArcGIS portal and created Portal for ArcGIS fully based on ArcGIS Online.

So yes it might not be dead, yet, but I'll give it 5 years tops.

ZdNET guys agree as well.

EDIT:
Richard states a good point why BizTalk can be good for the short run. Read here.

Bring Your Own Device

2012-07-06T16:33:00.001+03:00

You might get frustrated with the PCs at your Organization. You dont like microsoft word, you hate Outlook and you can't stand working with power point for your daily tasks?

BYOD helps you beat that. For instance my boss brings his macbook to work, hooks it via a vga adapter to the work monitor, uses mail mac to access his work mail, writes his documents in pages and when in need to access Windows he uses a virtual machine in his airbus ssd flash drive macbook

BYOD is taking over although there is still the question of security and data breaches

Fine-Grained Vs Coarse-Grained Architecture

2012-05-09T10:32:00.001+03:00

I got a chance to go through Telvent Software Architecture today and I really liked it. If you take a look at both Telvent and ESRI Object Models you will notice the difference.

Here is the Telvent Object Model for all their Products, and this is ESRI's.

ESRI ArcObjects are always referred to as "Fine-grained" while Telvent use the term Coarse Grained. The difference? its just how much you chop of your design to smaller components.

The smaller your components, the finer it gets, you isolate your code, increase usability to the max. However because your components are so small now you will end up with ALOT of couplings. This will make your architecture very dependant on other objects and it will be very difficult to read as you can see in ESRI object model. Moreover, it is almost impossible to show a fine-grained architecture to upper management since it is too detailed.

Telvent's on the other hand does not go and break down their software components very far, instead they have a little bigger components, yes they cannot reuse all sub components but that makes the architecture decoupled and easily readable and can be presented to someone without architecture skills.

When Monkeys can't reach the Ripe Banana they say it's not sweet

2012-04-23T18:01:00.000+03:00

So do most people.

But they use different phrasing:

"Oh, that's how he did it. I thought It's more complicated. "

"Aha you used that feature, everyone can do that"

"No, my level of thinking and implementation is way beyond this"

"Instagram? I thought of that application before but didn't implement it"

"No my idea is way more sophisticated."

Yes you know those people, you might be one of them.

Cut this attitude and learn to listen to others. Watch movies you don't usually watch, read books you don't read, listen to people stories that don't interest you.

You will be surprised to learn something new!

By the way there is an arabic song to this proverb.

So Do I

2012-04-04T12:03:00.000+03:00

You know what makes you an average person?
It's not where you work, or how much you get or what you make or where do you live.

Its the "So Do I"

Karl Benz invented the Automobile, the whole world used his design to manufacture cars. It did change the World. Now we have more than 350 Automobile manufactures in the world all creating automobiles running on gas and driving on 4 wheels. Average.
Now it's easy to open an Automobile Manufacturing company. Why its easy? because you are a coward.

Someone created a product template and she said I'm going to use it, you said "So Do I, I'm going to use it as well because it works!" which lists you with the rest of the world as average.

You can go ahead and say "so do I". But you will not notice very much of a difference. If you want to be a purple cow, go Reinvent the wheel.

Slim Kicker Reinvented the Diet Wheel

2012-04-04T11:20:00.003+03:00

Our friend Christine Chew emailed me last year with a great idea, it was challenging and scary, no body have done it.

This was her email

Hi Hussein,

I bumped into your blog today and was wondering if I could get your opinion on a diet/fitness app I am working on right now.
Basically, the main problem with being fit and eating healthy is motivation and willpower. It's such an abstract goal that seems overwhelming. It seems the best way to counter this is to make it into smaller, winnable games.
So my app makes living healthy, eating healthy, and fitness into a RPG game, where users earn points, "level up', and earn badges as they accomplish their health goals. Everytime they add something healthy like whole greens, and veggies to their food log, they earn points. Everytime they complete a workout, they earn points. As they achieve more and more, they'll level up and unlock badges...
Of course, to appeal to people's need for achievements/progress, I'm also adding charts, and graphs to show their progress... I think people love that sorta stuff. The whole idea is to shift people's attitude towards healthy living as fun, and enjoyable. And there's gonna be a web version for those that don't own smartphones.
What's your opinion on this idea? Would you want to know when I'm done with it? ^_^
Thanks so much!

[11-8-2011]

She found the key to what drives people to continue their food diet and become healthy and decided to automate it. Each time you complete a goal, you unlock new achievements and share it on twitter or facebook, you can compare your trophies with others and see where you stand. I loved the inspiration feed where you can see what others are eating so you can continue your diet.

She sent me an email today saying that her work is complete and she announced the birth of http://slimkicker.com/

She even made an iPhone app that you can download here, the blackberry version is coming soon as well. I wish she roll one for Andriod as well.

Christine saw what other diet programs are doing, and she did exactly the opposite she went into different way, she reinvented the wheel.

OpenStreetMap View coming Soon to Arc2Google and MapsCompare

2012-03-20T18:05:00.000+03:00

I got a number of requests to embed the OpenStreetMap to both Arc2Google and MapsCompare tool.

Arc2Google is a tool that integrates ArcMap with Google Maps/Earth ,Yahoo maps and Bing Maps, I am now working on adding OpenStreetmap so you will have access to rich content from your ArcMap.

I got this suggestion from the folks at slashgeo as a comment to add open street to Maps Compare as both Bing and Yahoo have poor data and Google Earth has exactly same data as Google Maps.

ESRI ArcGIS Online Products

2012-03-20T12:32:00.000+03:00

No, arcgis.com is not the only ESRI product that allows you to share and interact with your GIS maps and data with other users.

Governments have shown their interests in the ArcGIS Online product but they had doubts, the major concern was the Security.

Where is my data stored?
Who have access?
What happen when I delete a map?
Is the Mapping Channel secured?

In a simple presentation I explain the difference between the four ArcGIS Online Products.

Download it, browse through it and I'm open for discussion here.