D. Por el uso de tubos de vacio.
I am.
Explanation
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It's a malware, and it basically let's the person/hacker/culprit get information off your computer without the owner of the computer knowing that the person is doing it. It's often used to find keystrokes, passwords, online interaction, and other personal data.
Diong reasearch to know what your dion
Hello! Your answer is....
Secondary data is easier and less time consuming to fine.
I hope this helps, you are very pretty and have an awesome day!