https://www.wired.com/2016/10/wireds-totally-legit-guide-rig... - from before the election, claiming it was basically impossible and would require a massive conspiracy
https://www.wired.com/2016/11/hacked-not-audit-election-rest... - from after the election, arguing the safeguards against hacking are ineffective and casting doubt on the security of the election
Both articles are backed up by a convincing-sounding set of facts and expert opinions, yet despite the available evidence not actually changing they come to completely opposite conclusions. All that changed was that before the election "hacking voting machines is impossible" was the better anti-Trump narrative, and after he won there was suddenly a reason to cast doubt on the results. It's all about the narrative. (Which is one reason you should question the endlessly-repeated claim that there's "no such thing as alternative facts". Careful selection of which facts to include and exclude is a great way to create a narrative.)