Official Ruling
No. Add up the total number of unsuspended Digimon and Tamer cards your opponent has in play, then divide by two to determine how many security cards to trash. For example, if your opponent has 3 unsuspended Digimon and 1 unsuspended Tamer, this adds up to 4 cards total, which means you get to trash 2 of your opponent’s security cards.
Source: BT9-069 Baihumon