The former Southampton boss has insisted he will take responsibility for is a worrying trend of conceding from set-pieces.
Of the six goals Spurs have conceded in their three defeats, four have come from dead ball situations.
“We need to be strong because the games that we lose, in the way we conceded the goals, it’s so painful,” added Pochettino.
Brighton will certainly put Spurs’ set-piece defending to the test with giant centre-back Shane Duffy scoring and winning a penalty in their 2-2 draw at Southampton on Monday.
The Irish international also scored from a corner in Brighton’s famous 3-2 win over Manchester United last month.
“Even without being near the ball, with the pure size of him, he’s always a threat. People are nervous around him,” said Brighton striker Glenn Murray.