hash buster

[ hash buhs-ter ]

noun

1. 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.

Word History and Origins

Origin of hash buster¹

First recorded in 2000–05; hash ¹ (in the sense “in computers, a single number representing a message”) + buster ( def )