hash buster

[ hash-buhs-ter ]

noun

Computers. a program that generates unique strings of text within a spam email, designed to fool a spam filter and appearing randomly as the email’s subject, sender, or message: All that spam in your inbox may be due to hash busters.

Origin of hash buster

First recorded in 2000–05; hash¹ (in the sense “in computers, a single number representing a message”) + buster

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