It is refreshing to see that main stream media is beginning to recognize the threat of insiders to elections. I agree that election officials are by and large of high integrity, however just like other officials a few are not. Insiders can have access to a wide range of election equipment, ballots, and other data that create and verify election results. A recent Associated Press article by Christia A. Cassidy points that out:
In a handful of states, authorities are investigating whether local officials directed or aided in suspected security breaches at their own election offices. At least some have expressed doubt about the 2020 presidential election, and information gleaned from the breaches has surfaced in conspiracy theories pushed by allies of former President Donald Trump.
Insiders are not just election officials, other insiders include town hall employees in the mail room and network/computer staff, janitors with access to storage areas and election offices; They include post office workers and various vendor personal with access to networks or to repair election equipment. Here are some examples from Connecticut and elsewhere: