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Computer Security Compromised By Hardware Failure
Computer security compromised by hardware failure is a branch of computer security applied to hardware. The objective of computer security includes protection of information and property from theft, corruption, or natural disaster, while allowing the information and property to remain accessible and productive to its intended users.Computer security Such secret information could be retrieved by different ways. This article focus on the retrieval of data thanks to misused hardware or hardware failure. Hardware could be misused or exploited to get secret data. This article collects main types of attack that can lead to data theft. Computer security can be comprised by devices, such as keyboards, monitors or printers (thanks to electromagnetic or acoustic emanation for example) or by components of the computer, such as the memory, the network card or the processor (thanks to time or temperature analysis for example). Devices Monitor The monitor is the main device used to access ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Computer Security
Computer security, cybersecurity (cyber security), or information technology security (IT security) is the protection of computer systems and networks from attack by malicious actors that may result in unauthorized information disclosure, theft of, or damage to hardware, software, or data, as well as from the disruption or misdirection of the services they provide. The field has become of significance due to the expanded reliance on computer systems, the Internet, and wireless network standards such as Bluetooth and Wi-Fi, and due to the growth of smart devices, including smartphones, televisions, and the various devices that constitute the Internet of things (IoT). Cybersecurity is one of the most significant challenges of the contemporary world, due to both the complexity of information systems and the societies they support. Security is of especially high importance for systems that govern large-scale systems with far-reaching physical effects, such as power distribu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Processor CacheL2
Processor may refer to: Computing Hardware * Processor (computing) **Central processing unit (CPU), the hardware within a computer that executes a program *** Microprocessor, a central processing unit contained on a single integrated circuit (IC) **** Application-specific instruction set processor (ASIP), a component used in system-on-a-chip design **** Graphics processing unit (GPU), a processor designed for doing dedicated graphics-rendering computations **** Physics processing unit (PPU), a dedicated microprocessor designed to handle the calculations of physics **** Digital signal processor (DSP), a specialized microprocessor designed specifically for digital signal processing ***** Image processor, a specialized DSP used for image processing in digital cameras, mobile phones or other devices **** Coprocessor **** Floating-point unit **** Network processor, a microprocessor specifically targeted at the networking application domain ** Multi-core processor, single component wi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mem Cache
Mem (also spelled Meem, Meme, or Mim) is the thirteenth letter of the Semitic abjads, including Hebrew mēm , Aramaic Mem , Syriac mīm ܡ, Arabic mīm and Phoenician mēm . Its sound value is . The Phoenician letter gave rise to the Greek mu (Μ), Etruscan , Latin M, and Cyrillic М. Origins Mem is believed to derive from the Egyptian hieroglyphic symbol for water, N35 which had been simplified by the Phoenicians and named after their word for “water”, ''mem'' (), ultimately coming from Proto-Semitic *maʾ-/*may-. Hebrew Mem Hebrew spelling: Hebrew pronunciation Mem represents a bilabial nasal . Variations on written form/pronunciation In Hebrew, Mem, like Kaph, Nun, Pe, and Tzadi, has a final form, used at the end of words: its shape changes from to . Significance In gematria, Mem represents the number 40 in both the Standard and Mispar Gadol Methods of Gematria; However, (mem sofit) final mem's value is 40 in the Standard Method and 600 in the Misp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
CPU Cache
A CPU cache is a hardware cache used by the central processing unit (CPU) of a computer to reduce the average cost (time or energy) to access data from the main memory. A cache is a smaller, faster memory, located closer to a processor core, which stores copies of the data from frequently used main memory locations. Most CPUs have a hierarchy of multiple cache levels (L1, L2, often L3, and rarely even L4), with different instruction-specific and data-specific caches at level 1. The cache memory is typically implemented with static random-access memory (SRAM), in modern CPUs by far the largest part of them by chip area, but SRAM is not always used for all levels (of I- or D-cache), or even any level, sometimes some latter or all levels are implemented with eDRAM. Other types of caches exist (that are not counted towards the "cache size" of the most important caches mentioned above), such as the translation lookaside buffer (TLB) which is part of the memory management unit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dorn1
DORN1 refers to a purinergic receptor found in green plants, which is involved in extracellular ATP detection. Through the process of signal transduction, DORN1 couples extracellular ATP binding (which occurs during cellular stress) to downstream signalling and ultimately gene expression, which is thought to aid in plant survival. Molecular properties In contrast to animal purinergic receptors (which are G protein-coupled receptors), DORN1 is a lectin receptor kinase (LecRK), and is part of the L type lectin receptor kinases, due to its legume-like extracellular domain. In green plants such as ''Arabidopsis thaliana'', several mutants lacking the DORN1 receptors are unable to phosphorylate mitogen-activated protein kinases after ATP stimulation. Function DORN1 receptors may play a role in mediating wound-induced inflammatory responses in green plants, with ATP acting as a damage-associated molecular pattern molecule. In response to cell lysis, ATP is discharged and binds ont ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Void Formation
Void may refer to: Science, engineering, and technology * Void (astronomy), the spaces between galaxy filaments that contain no galaxies * Void (composites), a pore that remains unoccupied in a composite material * Void, synonym for vacuum, a space containing no matter * Void, a bubble within a mechanical part that causes cavitation when it collapses * Void, an unwanted air pocket formed during injection moulding * VoID or Vocabulary of Interlinked Datasets, an RDF vocabulary to enable the discovery and use of linked data sets * Void coefficient, the change in the reactivity of a nuclear reactor when voids form in moderator or coolant fluids * Void Linux, a Linux distribution * Void ratio, the volume of void-space to solid space in a material * Void safety, in object-oriented programming, a guarantee that no object references will have null values * Void type, in programming languages, a keyword indicating the absence of data * Void set or empty set, the mathematical set with n ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Whisker Growth
Vibrissae (; singular: vibrissa; ), more generally called Whiskers, are a type of stiff, functional hair used by mammals to sense their environment. These hairs are finely specialised for this purpose, whereas other types of hair are coarser as tactile sensors. Although whiskers are specifically those found around the face, vibrissae are known to grow in clusters at various places around the body. Most mammals have them, including all non-human primates and especially nocturnal mammals. Whiskers are sensitive tactile hairs that aid navigation, locomotion, exploration, hunting, social touch and perform other functions. This article is primarily about the specialised sensing hairs of mammals, but some birds, fish, insects, crustaceans and other arthropods are known to have similar structures also used to sense the environment. Etymology Vibrissae (from Latin 'to vibrate') from the characteristic motion seen in a small rodent that is otherwise sitting still. In medicine, the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
