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HMG IA Policy No. 5
HMG Infosec Standard 5, or IS5, is a data destruction standard used by the British government. Context IS5 is part of a larger family of IT security standards published by CESG; it is referred to by the more general Infosec Standard No.1. IS5 is similar to DOD 5220.22-M (used in the USA). Requirements IS5 sets a wide range of requirements—not just the technical detail of overwriting data, but also the policies and processes that organisations should have in place, to ensure that media are disposed of securely. IS5 also touches on risk management accreditation, because secure reuse and disposal of media is an important control for organisations handling high-impact data. It's not sufficient just to sanitise media; the sanitisation should also be ''auditable'', and records must be kept. IS5 defines two different levels of overwriting: * Baseline overwriting of data involves one pass, overwriting every sector of the storage medium once with zeros. * Enhanced overwriting involves t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Data Destruction
Data erasure (sometimes referred to as data clearing, data wiping, or data destruction) is a software-based method of data sanitization that aims to completely destroy all electronic data residing on a hard disk drive or other digital media by overwriting data onto all sectors of the device in an irreversible process. By overwriting the data on the storage device, the data is rendered irrecoverable. Ideally, software designed for data erasure should: #Allow for selection of a specific standard, based on unique needs, and #Verify the overwriting method has been successful and removed data across the entire device. Permanent data erasure goes beyond basic file deletion commands, which only remove direct pointers to the data disk sectors and make the data recovery possible with common software tools. Unlike degaussing and physical destruction, which render the storage media unusable, data erasure removes all information while leaving the disk operable. New flash memory-based med ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Communications-Electronics Security Group
Government Communications Headquarters (GCHQ) is an intelligence and security organisation responsible for providing signals intelligence (SIGINT) and information assurance (IA) to the government and armed forces of the United Kingdom. Primarily based at The Doughnut in the suburbs of Cheltenham, GCHQ is the responsibility of the country's Secretary of State for Foreign and Commonwealth Affairs (Foreign Secretary), but it is not a part of the Foreign Office and its director ranks as a Permanent Secretary. GCHQ was originally established after the First World War as the Government Code and Cypher School (GC&CS) and was known under that name until 1946. During the Second World War it was located at Bletchley Park, where it was responsible for breaking the German Enigma codes. There are two main components of GCHQ, the Composite Signals Organisation (CSO), which is responsible for gathering information, and the National Cyber Security Centre (NCSC), which is responsible for secur ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Infosec Standard No
Information security is the practice of protecting information by mitigating information risks. It is part of information risk management. It typically involves preventing or reducing the probability of unauthorized or inappropriate access to data or the unlawful use, disclosure, disruption, deletion, corruption, modification, inspection, recording, or devaluation of information. It also involves actions intended to reduce the adverse impacts of such incidents. Protected information may take any form, e.g., electronic or physical, tangible (e.g., paperwork), or intangible (e.g., knowledge). Information security's primary focus is the balanced protection of data confidentiality, integrity, and availability (also known as the 'CIA' triad) while maintaining a focus on efficient policy implementation, all without hampering organization productivity. This is largely achieved through a structured risk management process. To standardize this discipline, academics and professionals collab ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
