How Do Keylog Files Show Up?
Keylog files are generated by programs known as keyloggers. Keyloggers log keystrokes into these keylog files. There are many ways a keylogger may store its files, thus the method for finding and opening them depends on the keylogger itself. Keyloggers may be illegal to use in certain locations and situations, especially when used for privacy invasion or identity theft.
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Text Files
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Some keyloggers save keylog files as text files. Text files end in a ".TXT" file extension, and open with programs such as Notepad. To remain undetected, keylog text files may be marked as hidden, and may even be encrypted. Setting Windows to show hidden files will expose any files marked as hidden.
HTML
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Keyloggers may also save their keylog files as HTML files. An HTML file is a text file with the ".HTML" extension and opens with a web browser, such as Internet Explorer or Safari. HTML keylog files may include JavaScript and require a password to view. They may also be hidden or encrypted.
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Email
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Certain keyloggers may send the keylog files to an email address, either as an attachement or within the body of the email. When sent as an attachment, the file may also be encrypted. Password-protected zip files may also be used to prevent access.
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