Jason Steele made up for the gaff that let Newport County equalise in the sixth minute of added time by saving four penalties to earn Brighton a ticket into the fourth round of the FA Cup.
His acrobatics in saving penalties from Josh Sheehan, Micky Demetriou, Liam Shephard and Scot Bennett enabled Adam Webster to ram home the winner with the 14th spot kick to make it 4-3 to the Premier League outfit.
It was the second time this season that Newport had suffered penalty shoot-out heartbreak in cup ties at home against Premier League opposition having been beaten in the same way by Newcastle United in the Carabao Cup.