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Traditionally, keyloggers were either software that needed to be installed on the target computer or devices that were connected to the target computer. With the advent of wireless keyboards and due to their popularity, keyloggers no longer have to be installed or attached to the target computers.

Almost every regulation and standard has logging requirements. This requirement is there to ensure that there is data that can show attacks and breaches. But there have been numerous breaches in which the the breach happened over a period of time and they were not discovered for a long time after.