Rather than protect against viruses, Mac Defender hijacks the user's Internet browser to display sites related to pornography, and also exposes the user to identity theft (by passing on credit card information to the cracker). The user is then prompted to download a file that installs Mac Defender, and is then asked to pay US$59.95 to US$79.95 for a license for the software. The program falsely appears to scan the system's hard drive. When a user accesses such a malicious link, a fake scanning window appears, originally in the style of a Windows XP application, but later in the form of an "Apple-type interface". The program appears in malicious links spread by search engine optimization poisoning on sites such as Google Image Search. ![]() It appears as a pop-up indicating that viruses have been detected on the users' computer and suggests they download a program which, if installed, provides the users' personal information to unauthorized third parties. ![]() Users typically encounter the program when opening an image found on a search engine.
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