A more thorough explanation:

Definition: Bugging is a type of electronic surveillance that involves secretly intercepting, overhearing, or recording conversations using electronic devices. It is a form of eavesdropping that is done without the knowledge or consent of the people being monitored. Bugging is also known as wiretapping.

Examples:

• A spy plant a hidden microphone in a room to listen to a private conversation.
• A law enforcement agency installs a listening device in a suspect's car to gather evidence.
• A company uses software to monitor the emails and phone calls of its employees without their knowledge.

The examples illustrate how bugging can be used to secretly listen in on conversations or monitor electronic communications. It is often done for surveillance or investigative purposes, but can also be used for nefarious purposes such as spying or corporate espionage.