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OSI model

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OSI model OSI model is an acronym for Open Systems Interconnection is used to define how data is transferred from one system to another system in a computer network. Now you may ask how a network is formed? If two computers are connected to each other with LAN cables, connectors and Network Interface Card forms a network. Since the designing and infrastructure won't be similar of two computers the OSI model was introduced by ISO(International Organization for Standardization) in 1984 for a successful communication between computers or networks. OSI model consists of  7 different layers 1. Application layer 2. Presentation layer 3. Session layer 4. Transport layer 5. Network layer 6. Data link layer 7. Physical layer Now I'm going to give a mnemonic to remember the OSI model Please-Do-Not-Throw-Sausage-Pizza-Away, easy right? Application layer - Application layer does not include applications like chrome, firefox instead it incl...
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What is Hacking? Definition and Types

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What is Hacking ? Definition -  Hacking is an attempt to exploit a system, network, or a device using some tools or techniques to gain unauthorized access in a system to manipulate, corrupt, destroy the data for its own need or to seek a revenge. Most people think hacking is illegal, well that depends on an intent of a hacker. Hacking   can be legal or illegal, If a hacker has a permission to penetrate into a system it's said to be a legal practice because he/she is only securing a system by informing the vulnerabilities to the organization, which is known as ethical hacking If you are caught performing some illegal activities you will have to face the consequences because the result is going to be drastic, which is known as unethical hacking . Now that you got to learn what does hacking mean, let's see what are the types of hackers Black Hat Hacker : Black Hat Hackers are also known as crackers. These are the types ...
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Ethical hacking terminologies

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Ethical Hacking Terminologies  Following is the list of terms that are frequently used in the field of ethical hacking . If you are not aware of these terms then it would be difficult for you to understand the concept of ethical hacking properly. Thus knowing this will ease your process of going further in this domain. Vulnerability -  A weakness, flaw or loophole in a system, network or any device that can be exploited. Threat -  A danger that can exploit an existing bug or vulnerability to compromise the security of a network system. Attack - An action that is done to extract a sensitive data by getting unauthorized access of a system. Phishing - A process where an attacker creates fake website or url which looks like a legit page but it's to trap the user to get sensitive data. Backdoor -  A hidden entry point which can bypass the authentication process i.e logins and passwords also known as trapdoor. ...
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