Infosec is the practice of defending information from unauthorized access, use, disclosure, disruption, modification, perusal, inspection, recording or destruction. It is a general term that can be used regardless of the form the data may take (e.g. electronic, physical).
Cryptography is the practice and study of techniques for secure communication in the presence of third parties.
Locksport is the sport or recreation of defeating locking systems.
Electronics is the science of how to control electric energy, energy in which the electrons have a fundamental role.
Amateur radio (also called "ham" radio) describes the use of radio frequency spectra for purposes of non-commercial exchange of messages, wireless experimentation, self-training, private recreation and emergency communication.
More is a command to view (but not modify) the contents of a text file one screen at a time.
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