What is a Spam ? Why has it become a big Internet issue ?

Spam refers to electronic junk mail or junk newsgroup postings, as well as unsolicited, usually commercial email sent to a large number of addresses.

Spam has become a significant Internet issue because:

1. It reduces productivity — The billions of spam messages circulating across the Internet can disrupt email delivery, degrade system performance, and reduce overall productivity.

2. It consumes time — While deleting spam emails might seem like a simple solution, it consumes a significant amount of time and hampers productivity.

3. It can lead to worse things — Spam messages may contain offensive or fraudulent material and can even be used to spread viruses.