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W

Worm:

A self-replicating, self-propagating, self-contained program that uses networking mechanisms to spread itself.

Work factor:

An estimate of the effort or time needed by a potential adversary, with specified expertise and resources, to overcome a protective measure.

Whitelist:

A list of entities that are considered trustworthy and are granted access or privileges.

White Team:

A group responsible for refereeing an engagement between a Red Team of mock attackers and a Blue Team of actual defenders of information systems

Weakness:

A shortcoming or imperfection in software code, design, architecture, or deployment that, under proper conditions, could become a vulnerability or contribute to the introduction of vulnerabilities.