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The concept behind a fork bomb — the processes continually replicate themselves, potentially causing a denial of service. In computing, a fork bomb (also called rabbit virus) is a denial-of-service (DoS) attack wherein a process continually replicates itself to deplete available system resources, slowing down or crashing the system due to resource starvation.
Fork bomb: a similar method to exhaust a system's resources through recursion; Zip bomb: a similar attack utilizing zip archives; XML external entity attack: an XML attack to return arbitrary server files; Document type definition: a template for validating XML files
Article mentions that bash fork bomb was created by Jaromil in 2002. I was able to find posts of a polish white hat - lcamtuf from 1999 in usenet, in which he had this fork bomb in his signature. Necc 17:25, 13 March 2008 (UTC) If you can cite a source of this update the page ;) You might want to tell Jaromil too!
The wait call may be executed in sequential code, but it is commonly executed in a handler for the SIGCHLD signal, which the parent receives whenever a child has died. After the zombie is removed, its process identifier (PID) and entry in the process table can then be reused.
The Rabbit (or Wabbit) virus, more a fork bomb than a virus, is written. The Rabbit virus makes multiple copies of itself on a single computer (and was named " rabbit " for the speed at which it did so) until it clogs the system, reducing system performance, before finally reaching a threshold and crashing the computer.
Fork and its variants are typically the only way of doing so in Unix-like systems. For a process to start the execution of a different program, it first forks to create a copy of itself. Then, the copy, called the " child process ", calls the exec system call to overlay itself with the other program: it ceases execution of its former program in ...
When starvation is impossible in a concurrent algorithm, the algorithm is called starvation-free, lockout-freed [2] or said to have finite bypass. [3] This property is an instance of liveness , and is one of the two requirements for any mutual exclusion algorithm; the other being correctness .
A logic bomb is a piece of code intentionally inserted into a software system that will set off a malicious function when specified conditions are met. For example, a programmer may hide a piece of code that starts deleting files (such as a salary database trigger ), should they ever be terminated from the company.