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Scareware generates pop-ups that look like Microsoft Windows system warnings and alerts for anti-virus/anti-spyware software, registry cleaners or firewalls. These deceptive pop-ups create a user call to action to purchase scareware and repair alleged errors.
Scareware may include a clickjacking feature to redirect a user to an attacker’s website or initiate a malware download if a user tries to close the pop-up. Scareware also coerces users into uninstalling legitimate anti-virus software. If a suspicious pop-up appears, the user is advised to right click on the taskbar item and select close, or exit the browser by selecting Ctrl-Alt-Del to terminate the browser process.
Scareware infects users and their computers via any of the following methods: