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. )