How did the spam come to acquire its current hateful meaning?

The term "spam" originally referred to a brand of canned meat but evolved in the digital realm to describe unsolicited and often irrelevant online messages. Its negative connotation emerged as users began associating excessive, unwanted communications—particularly in email and online forums—with annoyance and disruption. The comparison to the canned meat product, which is often seen as undesirable or excessive, further solidified this hateful meaning. Over time, "spam" has come to symbolize not just unwanted messages but also the broader issue of digital clutter and manipulation.