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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.
Jerusalem is a logic bomb DOS virus first detected at Hebrew University of Jerusalem, in October 1987. [1] On infection, the Jerusalem virus becomes memory resident (using 2kb of memory), and then infects every executable file run, except for COMMAND.COM. [2] COM files grow by 1,813 bytes when infected by Jerusalem and are not re-infected.
This is an accepted version of this page This is the latest accepted revision, reviewed on 2 February 2025. Computer program that modifies other programs to replicate itself and spread Hex dump of the Brain virus, generally regarded as the first computer virus for the IBM Personal Computer (IBM PC) and compatibles A computer virus is a type of malware that, when executed, replicates itself by ...
They claimed that they and other individuals "P_srim_asap", "Mrthanthomthebomber", "mister-handsomekai" and "RiansJohnson" had placed bombs at Chinese and Russian diplomatic facilities in Malaysia with the former containing a photo of Huanan Seafood Wholesale Market, Hong Kong's International Finance Centre and MTR Airport Station, and the ...
Stuxnet specifically targets programmable logic controllers (PLCs), which allow the automation of electromechanical processes such as those used to control machinery and industrial processes including gas centrifuges for separating nuclear material.
A famous example of a zip bomb is titled 42.zip, which is a zip file of unknown authorship [4] consisting of 42 kilobytes of compressed data, containing five layers of nested zip files in sets of 16, each bottom-layer archive containing a 4.3-gigabyte (4 294 967 295 bytes; 4 GiB − 1 B) file for a total of 4.5 petabytes (4 503 599 626 321 920 ...
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.
The bomb method, invented in the autumn of 1938, consisted largely in the automation and acceleration of the process of reconstructing daily keys. Each cryptologic bomb (six were built in Warsaw for the Biuro Szyfrów Cipher Bureau before September 1939) essentially constituted an electrically powered aggregate of six Enigmas.