The key points are in sections 5, 6, and 10. The comment is long because the issue is complex. That threat is in a different category, and there's no easy way to defend against it. It does not apply to software, such as keystroke loggers, that may be installed deliberately by an intruder who has hands-on access to the computer, or who has been able to take control of it remotely.
This is a comment on what you should-and should not-do to protect yourself from malicious software ('malware') that circulates on the Internet and gets onto a computer as an unintended consequence of the user's actions.
The answer usually given on ASC is 'no.' The answer is right, but it may give the wrong impression that there is no threat from what are loosely called 'viruses.' There is a threat, and you need to educate yourself about it.ġ. Mac users often ask whether they should install 'anti-virus' software.