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Data corruption is a when data becomes unusable, unreadable or in some other way inaccessible to a user or application. Data corruption occurs when a data element or instance loses its base integrity and transforms into a form that is not meaningful for the user or the application accessing it.
Techopedia Explains Data Corruption
Although there are many factors that trigger data corruption, it is often enabled through an external virus stored or installed within the target computer or device. The virus overwrites the original data, modifies the code or permanently deletes it. Besides viruses, data corruption may also occur as a result of hardware or software malfunctions, errors and environmental calamities such as power outages, storms or other disasters. Data can be restored through a backup copy or it can be rebuilt using various data integrity checking algorithms.
