Spyware is a general term used to describe software that performs certain behaviors, such as advertisements, collecting personal information, or changing computer configurations, usually without prior consent to consent.
Spyware is often associated with software that includes ads (such as Adware) or software that is sensitive to personal or sensitive information.
This does not mean that all programs that provide ads or track online activities are bad. For example, you can subscribe to a free music service, but you'll "pay" for the service by accepting targeted ads. If you understand the terms and accept them, you have decided that it is fair trade. Your business may be monitoring your online activities to determine which ads to show.
Other types of spyware change your computer, which can be annoying and your computer may slow down or crash.
These programs can change the homepage of the web browsers or the search page, or add additional elements to the browser that you do not need or want. These programs also make it very difficult to restore settings in the original way.
The key is in any case (or someone using the computer) to understand what the software will do and agree to install the software on your computer.
There are many ways to use spyware or other unwanted software on your computer. A common trick is to install the software secretly when installing other software for such a music or video file sharing program.
Software that securely collects user data through the user's Internet connection without their knowledge, usually for advertising purposes. Used as a hidden component of spyware applications as a hidden part of freeware or shareware programs that can be downloaded from the Internet; however, it should be noted that most of the shareware and freeware applications do not come to SpyWare. After installation, Spyware monitors user activity on the Internet and passes this information to someone else's background. Spyware can collect information about e-mail addresses, even passwords and number of credit cards.
Apart from ethics and privacy, SpyWare uses computer memory resources and bandwidth to send information back to the spy cloud base via the user's Internet connection. Because SpyWare uses memory and system resources, background applications can lead to system failures or general system instability.
As SpyWare runs as an independent, executable program, you can track keystrokes, scan files stored on your hard disk, scan other applications, such as chat or word processors, install other SpyWare programs, read cookies, and keep them permanently information to the SpyWare Author who uses it for advertising / marketing or sells the information to another party.
License agreements accompany software downloads sometimes alert the user that they are installing SpyWare with the requested software, but the license agreements are not always fully legible, since SpyWare's notification of installing is often soft and hard – read legal statements.
Examples of SpyWare
These common SpyWare programs illustrate the diversity of behaviors encountered in such attacks. Keep in mind that as a computer virus, researchers provide SpyWare programs that their creators can not use. Programs can not be grouped into "families" by common "habits" or by "financial tracking" of financial or business relationships. For example, many of the SpyWare programs distributed by Claria are commonly referred to as "Gatorns". Likewise, frequently-installed programs may be part of the same SpyWare suite, even if they work separately.
o The CoolWebSearch program group exploits vulnerabilities in Internet Explorer. This packets traffic traffic to ads on sites including coolwebsearch.com. It displays popup ads, rewrite the search engine results, and change the infected computer host files to directly control DNS queries on these sites.
o The Web Optimizer, also known as DyFuCa, redirects Internet Explorer error pages to ads. When users are tracking a bad URL or typing an incorrect URL, they see an ad page. Because password-protected sites (HTTP authentication) use the same mechanism as HTTP errors, the Internet Optimizer makes it impossible for the user to access the password-protected sites.
o Zango (previously 180 solutions) provides detailed information to advertisers about sites visited by visitors. It also alters HTTP requests for affiliate ads associated with the site, so ads will result in profits not achieving the 180 Solutions Company. It opens up pop-up ads that are on the Competitiveness Web site.
o HuntBar, also known as WinTools or Adware, installed WebSearch with an ActiveX Drive download on Affiliate Sites or other SpyWare-featured ads – for example, how SpyWare can install more SpyWare. These programs use IE toolbars, tracking aggregate browsing behavior, redirect affiliate references, and display ads.
oZlob Trojan or just Zlob, uploads itself to your computer with the ActiveX codec and sends feedback to the Control Server. Certain information may include search history, visited sites, and Key Strokes.