“Big letters in home security” crossword clue

Reveal the answer to see why it works and where this clue has appeared before.ADT is the answer to the New York Times crossword clue “Big letters in home security”. It was last seen in the puzzle of September 21, 2026, where it runs at 1 Down and fills 3 squares. It crosses 3 other entries in that grid — those are listed below and are the quickest way to confirm the letters you already have.