Those who follow me on The Bad Place have heard me repeat this a thousand times, but once more won't hurt.

Election security is incredibly complex, full of seemingly impossible tradeoffs. But disinformation about supposed "rigged" elections is perhaps the most serious threat to election integrity today.

The best defense is to learn how elections actualy work! Becoming a poll worker is a great way to do that

Also, this National Academies study is a terrific resource:

https://nap.nationalacademies.org/catalog/25120/securing-the-vote-protecting-american-democracy