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Spyware

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1)Spyware Software that monitors the activities of a user (such as their browsing habits) or gathers information about a user (such as stored credit card details) without the user's knowledge or permission. This information is collected so that it can be relayed to a third party. Spyware is typically used as a prelude to theft or fraud. Once credit card or personal information has been collected and relayed to a third party that third party is able to use the information to commit a theft or fraud. 2)Spyware is a type of software intended to collect information from computers without permission of the user and then send that stolen information over the Internet to the spyware designer. The type of information collected varies greatly. It can be something as simple and harmless as transmitting your browsing habits to compromising your security by retrieving your passwords and credit card numbers. The program usually tries to hide itself from the user in an attempt to gather as much personal information before the user realizes that his security was compromised. ALL spyware programs are dangerous and should be removed immediately upon detection.

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Adware
1) Advertisement supported software. Adware A collective name for software which displays advertising banners or pop-ups while the user is using the application. Typically the software may be free at the point of use and is supported by the revenue generated from displaying advertisements. Sometimes the advertisements are independent of the application the user originally installed. Adware can be distracting and sometimes annoying, but other than taking up bandwidth (because the application will typically download new adverts) it is not in itself harmful. 2)Adware is a program module bundled with another program or part of a program itself that is designed to display advertisements. Adware programs are usually distributed at a lower cost (or no cost at all), because the main source of revenue is displaying ads, not the program itself. While many adware programs exist only to flood our computers with ads (a lot of them are installed in direct violation of existing laws), some of them are parts of legal or even helpful tools. Well-known example of such software was the popular Opera Web Browser, which displayed a small advertisement window until it was registered. Although Opera has recently become freeware, adware-sponsored applications are still relatively common. Most of the time, however, adware remains an unwanted and potentially dangerous kind of software, often bundled not with an excellent web browser, but with spyware keyloggers.