to plant a bug
instalovat štěnici, odposlech
1. Detectives had planted a bug in his hotel room.(Cambridge Advanced Dictionary)
2. Or perhaps the DTI anticipated their wrong-doing and so planted a bug to record the conversation at which the agreement was struck.(BNCI)
3. Someone tampered with IBM systems by planting a dormant bug due to wipe out whole data banks as soon as the calendar hits Friday 13 October. (WASPS)