October Surprise: What is Hillary Clinton warning Kamala Harris about as an 'October Surprise'?

Before the US election 2024 one may come in November Surprise in OctoberHillary Clinton warned Vice President Kamala Harris. “I expect something will happen in October, as it always does,” Hillary said on PBS News when asked to put on the Cassandra hat and talk about something she believes will happen in the near future will happen and should be taken more seriously.
“I expect there will be a full court press in October. The digital airwaves will be filled. And why is that important? Because the press, which is pro-Trump anyway, often spreads stories digitally that they then pick up.” Let’s say Fox and others. Then those stories are stories, so the mainstream press reports on them, and so that story then takes on a life of its own.”
“We know that the Russians are active in the elections, as is Iran. Chinese use TikTok; they certainly used it against Biden and for Trump. I think they're a little less pro-Trump right now. So look at where people are coming from.” “They get their information largely from social media and so the campaign is doing its best to combat this false disinformation at home and abroad,” Hillary said.
“There will be a concerted effort to distort and distort Kamala Harris who she is, what she stands for, what she has done. Listen, I mean the crazy story about me running a child trafficking operation out of the basement of a pizzeria. Don't laugh, don't laugh. And it caused a young man in North Carolina to pull up with his, you know, assault rifle to free these non-existent children and shoot up a pizza place in Washington DC,” Hillary said.
“This is dangerous stuff. It often starts online on the dark web. It wanders. It's being picked up by the pro-Trump media. Then it gets reported by everyone else, which ensures that it's about 100 percent covered and people believe it,” Hillary said.
What was the October surprise of 2016?
Both Clinton and Trump had an October surprise in the 2016 election campaign. The Washington Post published its “Access Hollywood Tape” story on October 7, which documented Trump bragging in extremely offensive terms about groping women. Hours earlier, Wikileaks began publishing hacked emails from Clinton's campaign that showed she had been leaked a debate question in advance