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Computer Glossary - P

Phishing
Phishers attempt to fraudulently acquire sensitive information, such as usernames, passwords and credit card details, by masquerading as a trustworthy entity in an electronic communication.

Piggybacking
Piggybacking is a term used to refer to obtaining a wireless internet connection by bringing one's own computer within the range of another's wireless connection without that subscriber's explicit permission or knowledge.

Pop-Up Ads
Pop-up ads or popups are a form of online advertising on the World Wide Web intended to increase web traffic or capture email addresses. It works when certain web sites open a new web browser window to display advertisements. The pop-up window containing an advertisement is usually generated by JavaScript, but can be generated by other means as well.

Processor
A processor interprets computer program instructions and processes data.

Protocols
A communications protocol is the set of standard rules for data representation, signalling, authentication and error detection required to send information over a communications channel.

Proxy
In computer networks, a proxy server is a server (a computer system or an application program) which services the requests of its clients by forwarding requests to other servers. A client connects to the proxy server, requesting some service, such as a file, connection, web page, or other resource, available from a different server.