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Spyware’s primary objective is to collect data about the computer system. This includes Internet browsing patterns, email addresses and account information. It also contains bank information, personal data and other information that hackers are able to use to take identities. It can also change the homepage of browsers, redirect web searches and alter computer settings.

Users can avoid infections with spyware by avoiding free downloadable programs, apps, toolbars and add-ons that usually come with malware. Before downloading any software users should check the privacy policies and terms of service of the site. It is also recommended to avoid clicking on links in pop-up windows. They should also choose “no” when a pop-up window asks if they wish to run a particular program or perform a specific task.

Antispyware programs can detect and remove spyware that is already present on a mobile or computer device, as well as stop it from infecting new devices. Certain programs provide real-time protection that scans all network data, and blocks attempts to install malicious software. They also block spyware from tracking a user’s online activities and recording keystrokes.

The main disadvantage to spyware is that it slows down computers and consumes large amounts of Internet bandwidth processing power, memory and processing power. It also can cause crashes to applications and cause the device to overheat. Additionally, certain types of spyware are able to hide from antispyware programs and blend in with the operating anatomy’s data files.