Short for "malicious software," malware refers to software programs designed to damage or do other unwanted actions on a computer system.
Productivity software is a category of application programs that help users produce things such as documents, databases, graphs, worksheets and presentations.
Public Domain Software
Christensson, Per. "Public Domain Definition." TechTerms. Sharpened Productions, 25 September 2012. Web. 07 November 2016.
Public domain is a legal term that describes a work or product that is not protected by copyright. The copyright protection an item in the public domain may have 1) expired, 2) been released by the author, or 3) never existed in the first place. Public domain items are publicly available and can be freely accessed and redistributed.
Christensson, Per. "Shareware Definition." TechTerms. Sharpened Productions, 09 July 2012. Web. 07 November 2016. <http://techterms.com/definition/shareware>.
Shareware is software that you can use on a trial basis before paying for it. Unlike freeware, shareware often has limited functionality or may only be used for a limited time before requiring payment and registration.
Utility programs, commonly referred to as just "utilities," are software programs that add functionality to your computer or help your computer perform better.
Open Source Software
When a software program is open source, it means the program's source code is freely available to the public. Unlike commercial software, open source programs can be modified and distributed by anyone and are often developed as a community rather than by a single organization.
Christensson, Per. "Open Source Definition." TechTerms. Sharpened Productions, 30 October 2008. Web. 07 November 2016. <http://techterms.com/definition/opensource>.
Christensson, Per. "Proprietary Software Definition." TechTerms. Sharpened Productions, 20 June 2015. Web. 07 November 2016.
Proprietary is an adjective that describes something owned by a specific company or individual. In the computing world, proprietary is often used to describe software that is not open source or freely licensed.
Pharming is yet another way hackers attempt to manipulate users on the Internet. While phishing attempts to capture personal information by getting users to visit a fake website, pharming redirects users to false websites without them even knowing it.