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In computing, a hang or freeze occurs when either a process or system ceases to respond to inputs. A typical example is when computer's graphical user interface (such as Microsoft Windows [ a ] ) no longer responds to the user typing on the keyboard or moving the mouse.
System-level soft errors occur when the data being processed is hit with a noise phenomenon, typically when the data is on a data bus. The computer tries to interpret the noise as a data bit, which can cause errors in addressing or processing program code. The bad data bit can even be saved in memory and cause problems at a later time.
The Spanish regional governments of Aragon, Basque Country, Castilla-La Mancha, Catalonia, and Galicia reported problems with their healthcare services. [212] Hospital Fernando Fonseca [ pt ] in Portugal reported problems, [ 213 ] while the Catholic Health system in New York experienced outages that caused delays in services.
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Examples of computer glitches causing disruption include an unexpected shutdown of a water filtration plant in New Canaan, 2010, [7] failures in the Computer Aided Dispatch system used by the police in Austin, resulting in unresponded 911 calls, [8] and an unexpected bit flip causing the Cassini spacecraft to enter "safe mode" in November 2010. [9]
In computer security, a cold boot attack (or to a lesser extent, a platform reset attack) is a type of side channel attack in which an attacker with physical access to a computer performs a memory dump of a computer's random-access memory (RAM) by performing a hard reset of the target machine.