I understand what they are supposed to be, but how did Mike get his hands on them? And how does he know what he has are legit?
To go along with that, does he have anyway of proving these are legit captures? or is that what this is supposed to prove?
any text/file/data can be altered, yes, but when there are corresponding matching text/file/data elsewhere any alteration would be detectable by comparing them. ipso facto they cannot be altered (without detection).
IF you have packets of info that change an election result, and the election result was changed, then the packets are real. If they are not real, and faked, then the results which tally with them are also fake. So by discrediting the packets, you discredit the election result. If you accept the packets are real, and they do not tally with the audited results, then you prove the election was tampered with. It is a double bind.