get into the wrong hands

Từ điển tiếng Anh - Cambridge Advanced Learners Dictionary

get/fall into the wrong hands idiom
If something gets/falls into the wrong hands, a dangerous person or enemy starts to control it
• If this sort of information fell into the wrong hands, we could be in serious trouble.
Thesaurus⁺: ↑Controlling and being in charge
Main entry: wrong_idiom