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Showing posts from 2014

Security Mechansim And Security Services - The OSI Security Architecture

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The OSI Security Architecture As Introduced earlier to the OSI security Architecture in previous Blog Posts http://hackups.blogspot.in/2014/05/security-attacks-osi-security.html and a follow up to the Security Attacks post http://hackups.blogspot.in/2014/05/computer-security-overview.html . SECURITY MECHANISM Security mechanisms are used to implement security  services. A process (or a device incorporating such a process) that is Designed to detect, prevent, or recover from a security Attack . There is no single mechanism that will support all the services required. However ,one particular element underlies many of the security mechanisms in use and that Element is Cryptographic Techniques.  Under Security Mechanisms (X.800) the following two main mechanisms are known: SPECIFIC SECURITY MECHANISMS: The Specific Security Mechanisms include the following  Encipherment, Data signatures, Access control, Data Integrity, Authentication Exchang...

Security Attacks - The OSI Security Architecture

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The OSI Security Architecture As Introduced earlier to the OSI security Architecture in previous Blog Post http://hackups.blogspot.in/2014/05/computer-security-overview.html ·         Security Attack:  Any action that compromises the security of information owned by an organization ·         Security Mechanism:  A process (or a device incorporating such a process) that is Designed to detect, prevent, or recover from a security Attack. ·         Security Services:  A processing or communication service that enhances the security of the data processing systems and the information transfers of an organization. The services are intended to counter security attacks, and They make use of one or more security mechanisms to provide the services. SECURITY ATTACKS Useful way of classifying security attacks is in terms of Passive and Ac...

Computer Security - Overview

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Computer Security Generally referred to as The Collection of Tools that are Designed to Protect Us From Hackers. These tools are necessary as these Protect us from Hackers and make it Tough for them to Crack into Your System. Now the Transmission of Data That is Transmitted Over a Network has to be protected too. So, The Collection of Tools Designed To Protect us From Hackers in a Network is known as Network Secutiry The nowadays trend of Security has changed a lot. Top companies Invest a lot on Security they make it Very Clear that all data should be protected and secured by any Means and it should be, as things and plans are more secret, it means a lot to the companies. If any Information is leaked the Security is Compromised and it Can be of Great loss to the company. Thus providing Information Security Is a Need. No Boundary between Network Security and Computer Security. Talking about Security we also Deal with the Word Virus. Now, Virus can be executed in a c...

Penetration Testing Basics - 2

What is Penetration Testing? Penetration testing is the legal and authorized attempt to exploit a computer system with the intent of making a network or system more secure. The process includes scanning systems looking for weak spots, and launching attacks and prove that the system is vulnerable to attack from a real hacker. Penetration Testing has several names: -Pen Testing -Ethical Hacking -White Hat Hacking A penetration test, or the short form pentest, is an attack on a computer system with the intention of finding security weaknesses, potentially gaining access to it, its functionality and data. The process involves identifying the target systems and the goal, then reviewing the information available and undertaking available means to attain the goal. A penetration test target may be a white box (where all background and system information is provided) or black box (where only basic or no information is provided except the company name). A penetration...

Steganography [Implementation]

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Steganography Implementation Method 1 Step 1  Copy an image file to c: of your computer. Step 2   Copy the text(which you want to hide) to clipboard, by writing it in notepad and selecting it, right clicking it, then copy. Step 3   Open cmd, by going to Start — All Programs — Accessories — Command Prompt. Step 4   In cmd type : Step 5  Now right click on image.jpg — Open with — Notepad. You can see your hidden text at the end of your image file contents. Though all the comments attached to this post were negative with problems "access denied". This can be bypassed by Right clicking at CMD and choosing  Run as admin: Method 2 Step1:  Open your notepad and write whatever text you wanna hide and save the text file as text.txt (or any other name). Step2:  Now choose the image in which you would like to hide your text. Keep both the files in the same directory (i recommend C:). Now open your Command prompt. If you have ke...

Steganography - The Art Of Hiding [Conceptual Overview]

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Steganography Steganography  the Art of hiding a message such the only the sender and the receiver has the idea of it or can crack it. this is not a defination but a simple word explaition to the wage definations which end up nowhere. Now guys as we know we are talking about Message so the First thing to do is write a message or thing of it. now if you want to encrypt that message such that only the particular decrypter can decrypt it do it. now in order to hide the massage in any form there are many techniques and tools to do that not going into too lengthy list the main thing used is image steganography. Steganography can be used to cloak hidden messages in image, audio, and even text files. In a computer, images are represented as arrays of values. These values represent the intensities of the three colors R(ed) G(reen) and B(lue), where a value for each of the three colors describes a pixel. Large images are most desirable for steganography because they have the...

Passwords And Accounts [Reality]

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The Reality Behind Your Account Password is Being Revealed the miss conceptions are tackled so that users are more aware and careful with their accounts and passwords Okay talking in general ,  suppose you just have signed up for an account(gmail,yahoo or any other reputed website) Your password  is stored only at two places 1. In website's database 2. In your mind (Dont say a stupid thing that it is also saved in a text file on your PC or in your girlfriend's mind etc) Fetching your credentials (Id/password) from website's database is almost impossible. They are paynig millions of dollars for securing their systems. Here I should remind you that, I am talking only about the reputed companies like microsoft,google,facebook etc. Hard Core hackers might get success in compromising their systems. Now talking about your mind, its might be really very simple to do this. Shocked ? At this ponit, I must say that hacking  an email account depends strongl...

NSA Regular Security Breach

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National Security Agency of America Breaches Security Overseas NSA most renowned security Agency of America now has employed most of Hacker to develop and spread Viruses over Servers All Around the World in the name of Anti-Terrorist Spying. this is now a normal thing for a common man as they Don't Have Bothering For this Stuff but NSA is interfering on a large Scale which is disappointing they are even tracking and eavesdropping other countries High End Government agencies now do they Explain that and how is it an Anti Terrorist Thing, NSA has no Limit It's Also supported by Many of the popular MNC such as Apple, Microsoft, Google. the Point is All privacy Things Are BOOMED. They have Claimed to had Tracked Onion Router (tor) proxies also. The Recent Update By The apple i.e. IOS7 has a Back-door By NSA they can locate your i-phone anytime and can track your calls and do anything they want Full Administration Right of your Device so in Fact you can say that you are buy...

Protect Yourself [Priority]

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How to Protect Yourself First.  Note:  This is not an article is based on a hacker's point of view and not an ordinary school book lesson.  Here we are discussing about various threats and thier securities. Computer Protection Table of Contents: 1. Introduction 2. Anti Viruses    - Scantime    - Runtime 3. Malware 4. Internet protection 5. Firewalls 6. Phishing 7. Protecting Your Self   Introduction Computer protection is vital to have due to the amount of viruses and worms, rootkits going around. Computer protection is one of the most must have things when securing your computer. Computer protection is a sign of safety when you're using your computer so that viruses cannot access your network. This tutorial will address the areas of staying safe when using your computer. These will include anti viruses, malware, internet protection, security alerts. Anti Viruses Anti viruses are software used to prevent, de...