Uncle Sam in action (Brent Crude Oil reacting)
https://www.tradingview.com/chart/Ptv41VXt/
https://twitter.com/marsxrobertson/status/1213085144250290177
Earlier in 2019
https://en.wikipedia.org/wiki/2019_Abqaiq%E2%80%93Khurais_attack
Someone who knew that, could make a lot of money
You can hack earnings announcement, or you can hack the company itself and announce the breach.
https://papers.ssrn.com/sol3/papers.cfm?abstract_id=3365024
Retail Insider Trading and Market Price Efficiency: Evidence from Hacked Earnings News.
Sounds like an interesting paper to read...