Computer security, also known as cybersecurity or IT security, is the protection of information systems from theft or damage to the hardware, the software, and to the information on them, as well as from disruption or misdirection of the services they provide. It includes controlling physical access to the hardware, as well as protecting against harm that may come via network access, data and code injection, and due to malpractice by operators, whether intentional, accidental, or due to them being tricked into deviating from secure procedures.
The field is of growing importance due to the increasing reliance on computer systems in most societies. Computer systems now include a very wide variety of "smart" devices, including smartphones, televisions and tiny devices as part of the Internet of Things – and networks include not only the Internet and private data networks, but also Bluetooth, Wi-Fi and other wireless networks.
A vulnerability is a system susceptibility or flaw, and many vulnerabilities are documented in the Common Vulnerabilities and Exposures (CVE) database and vulnerability management is the cyclical practice of identifying, classifying, remediating, and mitigating vulnerabilities as they are discovered. An exploitable vulnerability is one for which at least one working attack or "exploit" exists.
Security is the degree of protection against danger, damage, loss, and crime.
Security may also refer to:
Security convergence refers to the convergence of two historically distinct security functions – physical security and information security – within enterprises; both are integral parts of any coherent risk management program.
Security convergence is motivated by the recognition that corporate assets are increasingly information-based. Whereas in the past physical assets demanded the bulk of protection efforts, today information assets demand equal (if not far more) attention.
Convergence is endorsed by the three leading international organizations for security professionals – ASIS, ISACA and ISSA – which together co-founded the Alliance for Enterprise Security Risk Management to, in part, promote it.
A photon is an elementary particle, the quantum of light and all other forms of electromagnetic radiation. It is the force carrier for the electromagnetic force, even when static via virtual photons. The effects of this force are easily observable at the microscopic and at the macroscopic level, because the photon has zero rest mass; this allows long distance interactions. Like all elementary particles, photons are currently best explained by quantum mechanics and exhibit wave–particle duality, exhibiting properties of waves and of particles. For example, a single photon may be refracted by a lens or exhibit wave interference with itself, but also act as a particle giving a definite result when its position is measured. Waves and quanta, being two observable aspects of a single phenomenon, cannot have their true nature described in terms of any mechanical model. A representation of this dual property of light, which assumes certain points on the wave front to be the seat of the energy, is also impossible. Thus, the quanta in a light wave cannot be spatially localized. Some defined physical parameters of a photon are listed.
Photon is the third studio album from Japanese electronica/rock duo Boom Boom Satellites, released on July 24, 2002.
Photon - Commin' 2 a Phase is an alternate version of the "Photon" album, released in the UK by Different Records. It features an adjusted tracklist, re-recorded versions of a number of tracks and different artwork. It was released on September 29, 2003.
Photon, in comics, may refer to: