Attacks

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Introduction to attacks
Any computer connected to a computing network is potentially vulnerable to an attack. An "attack" is the exploitation of a flaw in a...
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Assessment security and types of hackers
The term "hacker" is often used to refer to a computer pirate. Victims of piracy on computer networks like to think they have been...
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Security - Network intrusion methodology
The goal of this article is to explain the methodology that pirates generally use to infiltrate a computer system. Its purpose is not...
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Exploits
An "exploit" is a computer program that "exploits" a vulnerability, whether or not it is published. Each exploit is specific to a...
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Passwords
When connecting to a computer system, you usually have to enter a log in or username and a password to access it. This login/password...
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Man in the middle attack
The "man in the middle" attack, sometimes abbreviated MITM, is an attack scenario where an attacker monitors a communication between...
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Replay attack
"Replay" attacks are "Man in the middle" attacks that involve intercepting data packets and replaying them, that is, resending them as...
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Denial of service attack
A "denial-of-service attack" (abbreviated DoS) is a type of attack that aims to make an organization's services or resources...
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Smurf attack
The so-called "smurf" technique is based on the use of broadcast servers to paralyze a network. A broadcast server is a server capable...
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Ping of death attack
The ping of death attack is one of the oldest network attacks. The principle of ping of death simply involves creating an IP datagram...
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Teardrop attack
A "fragment attack" is a network saturation (denial-of-service) attack that exploits the fragmentation principle of the IP protocol....
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LAND attack
The "LAND attack" is a network attack dating from 1997 using IP address spoofing to exploit a flaw on some TCP/IP protocol...
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SYN attack
The "SYN attack" (also called "TCP/SYN Flooding") is a network saturation (denial-of-service) attack that exploits the Three-way...
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IP address spoofing
"IP address spoofing" is a technique that involves replacing the IP address of an IP packet's sender with another machine's IP...
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TCP session hijacking
"TCP session hijacking" is a technique that involves intercepting a TCP session initiated between two machines in order to hijack it....
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Man in the middle attack
One of the most famous man in the middle attacks involves exploiting a weakness in the ARP (Address Resolution Protocol), the goal of...
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Network analyzers (sniffers)
A "network analyzer" (also called a sniffer), is a device that makes it possible to "monitor" a network's traffic, that is, to capture...
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Vulnerability scanners - Port scanning
A "vulnerability scanner" (sometimes called a "network analyzer") is a utility program that makes it possible to perform a security...
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Buffer overflow attacks
"Buffer overflow" (sometimes called buffer overrun) attacks are designed to trigger arbitrary code execution by a program by sending...
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Spam
Since the World Wide Web was created, resources have become more accessible and flows of information circulating on the network of...
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