Peter, a malicious hacker, obtains e-mail addresses by harvesting them from postings, blogs, DNS listings, and Web pages. He then sends large number of unsolicited commercial e-mail (UCE) messages on

Email spam (also called UCE - Unsolicited Commercial Email) is characterized by two elements Peter demonstrates: collecting recipient addresses without consent via harvesting techniques (scraping blogs, DNS records, web pages), and then distributing bulk commercial messages to those addresses without the recipients' permission.

An email storm is a network event caused by a cascade of automatic reply-all responses flooding an email system, not the deliberate sending of unsolicited bulk messages.

Email spoofing involves forging the sender's address in the email header to impersonate a trusted source, which is not described in Peter's actions.

Email bombing targets a single specific recipient with a massive volume of messages to overwhelm their inbox, whereas Peter is distributing messages broadly across many harvested addresses.