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Recently, a new DDOS attack tool was introduced dubbed as HOIC – High Orbit Ion Cannon. Although developed for testing purposes (according to the developer disclaimer)this tool is evidently used maliciously in the wild. HOIC is running as windows executables and has GUI control.
Dirt Jumper (previously known as RussKill) is a very popular Distributed Denial of Service Bot being heavily used in the DDOS-for-hire business online. By visiting underground forums, one can find many variants and versions of Dirt Jumper offered for sale. Since the source code for different versions of Dirt Jumper can now be found for free in some underground forums, Dirt Jumper continues to evolve and over time many versions and variants have come into play.
Low Orbit Ion Canon (LOIC) is an open source network stress testing and Denial of Service (DoS) attack application that was initially developed by Praetox Technologies and later released into the public domain. LOIC is a flooding tool that runs on Microsoft Windows and Mac OS X generating massive amounts of TCP, UDP and HTTP packets. It performs DoS attacks on the target site by flooding the server with non-legitimate packets in order to disrupt the service of a particular host.