Secondly used in a sentence

Secondly in a sentence as an adverb

As a technical lead / director, my questions are "how the **** do I make this thing work", and if you can't tell me• It's been observed many times that those who have the best appreciation for how a product works are those who use it directly, and secondly, those who either service it or support those using it.

This means that we will continue to collect entropy even if the input pool is apparently "full".This is critical, because secondly their hypothetical attacks presume certain input distributions which have an incorrect entropy estimate --- that is, either zero actual entropy but a high entropy estimate, or a high entropy, but a low entropy estimate.