

How secure is an installation with with no non-free packages?

How secure is a Debian installation packages installed only from main,
none from contrib or non-free?

It will lack for example the firmware-linux-nonfree package and the
intel-microcode / amd-microcode package. At least the microcode one is
security relevant? Are there any other packages which might be important
to have installed for security reasons?

I mean, how secure is it in comparison with those packages installed vs
not having them installed?

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