![]() Setting up this attack involves a PHP server controlled by the attacker used to intercept exfiltrated data. ![]() Instead, they have found a way to remotely execute code on the target macOS device. In this scenario, the attacker only cares about exfiltrating the clipboard and hasn't backdoored the MacBook. The payload is instead designed to exfiltrate the clipboard to the attacker's server at intervals. Scenario: The attacker doesn't care to remotely access the MacBook. Option 2: Exfiltrate Passwords to a Remote Server You can spend a little time devising a robust, proper solution with this as the basic foundation. But it serves its purpose for this article and most scenarios. The if statement only compares the last line of the clipboard.txt file, so if there are multiple lines in the clipboard it'll fail to recognize it as a duplicate entry. However, this solution is somewhat flawed. Only if the current clipboard content is not equal ( !=) to the last entry ( tail -n1) in clipboard.txt will pbpaste update the file. ~$ while true do if ] then echo -e "\n$(pbpaste)" >/tmp/clipboard.txt fi
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