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UNIX and Linux Based Rootkits Techniques and Countermeasures

Overview A rootkit enables an attacker to stay unnoticed on a compromised system and to use it for his purposes. This paper reviews techniques currently used by attackers on UNIX and Linux systems with a focus on kernel rootkits. Example rootkits are classified according to code injection and how the flow of execution is diverted within the kernel. The efficiency of different countermeasures is discussed for these examples.

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Publisher
DFN-CERT
File Format
PDF
Date Published
Oct 1, 2008
Format
White Papers
Topics
UNIX, Linux - Open Source

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