The cTrader Grid-Hedge News Event Manager has the logic to pause trading before, during and after a major high-impact news event, this helps reduce massive draw-down spikes or from your account being wiped out. Unfortunately, cTrader Backtesting cannot include this logic, so if you run a backtest for a year and during that year you had positions open during a high-impact news event then these positions could easily blow your account or produce a large drawdown.
How To Manage News Events
If you wish to manage news events you will need to purchase the News Trade Manager Tool.
How to Configure the News Release Manager?