There was a recent interesting episode of the NPR Fresh Air podcast, https://www.npr.org/programs/fresh-air/2020/02/11/804828527/fresh-air-for-feb-11-2020-trumps-2020-disinformation-campaign. It is an interview with a journalist about his article in the Atlantic about how Trump is setting up to use social media disinformation (aka propaganda) in the upcoming election.
There are some interesting comments about Facebook policies early on.
The examples of methods he gives are illuminating. In the last bit, he mentions one newish method that I had never heard of. Web sites are springing up that look like local newspapers, complete with some stories about local parking or what now, but are actually created and run by entities set up for the purpose. Political candidates can basically plant stories (for pay) onto these sites and unless you examine them computer.carefully, they appear to be real local news and opinion pieces. It's part of a targeted campaign to go after local news outlets.
The podcast is about 45 min long.
Scams like that are ongoing on the web. They come from banks (that are not) and I have my suspicions about some sites that profess to be Amazon. I get messages on the cellphone that pretend to come from my bank. I dump it all. I refuse to bank online too, despite invitations to do so. I once checked out what my bank would consider due diligence on my part: I wonder if anyone has that kind of security on their computer.