Spam: Spam is unsolicited or junk email that clogs up your email inbox. The best way to deal with spam is not to open it or reply to it. While the most widely recognized form of spam is e-mail spam, the term is applied to similar abuses in other media: instant messaging spam, Usenet newsgroup spam, Web search engine spam, spam in blogs, wiki spam, online classified ads spam, mobile phone messaging spam, Internet forum spam, junk fax transmissions, social networking spam, social spam, television advertising and file sharing spam. It is named for Spam, a luncheon meat, by way of a Monty Python sketch in which Spam is included in almost every dish. A person who creates electronic spam is called a spammer.
Spyware: Spyware is a software which gathers information about you and transmits it to an unauthorized third party.
This can cover everything from what sites you go to on the web to logging your keystrokes and finding out passwords
and
PINs. "Spyware" is mostly classified into four
types:
system monitors,
Trojans, adware, and tracking
cookies. Spyware is mostly used for the purposes such as; tracking and storing internet users' movements on the web; serving up
pop-up ads to internet users. Whenever spyware is used
for malicious purposes, its presence is typically hidden from the
user and can be difficult to detect. Some spyware, such as key loggers, may be installed by the owner of a shared, corporate, or public computer
intentionally in order to monitor users.