<P> Email spam, also known as junk email, is unsolicited messages sent in bulk by email (spamming). </P> <P> Most email spam messages are commercial in nature . Whether commercial or not, many contain disguised links that appear to be for familiar websites but in fact lead to phishing web sites or sites that are hosting malware . Spam email may also include malware as scripts or other executable file attachments (trojans). Spam is named after Spam luncheon meat by way of a Monty Python sketch in which Spam is ubiquitous, unavoidable and repetitive . </P>

What is email spam and how does it work