In an attempt to gather information for an article, harry secretly places a listening device in the principal's office. what type of privacy issue is this?

When Harry secretly places a listening device in their principal's office just to gather information for an article, he committed an invasion of privacy. He illegally interferes with his principal’s privacy and planned to publicize his private activity for his own personal gain.

In this case, Harry committed an invasion of privacy. Invasion of privacy is defined as entering someones personal matters without reason. If someone is listening to your conversation and they are not part of it and permitted to listen, they are invading your privacy. Every person is subject to have privacy and when that is interrupted someone can file a lawsuit against them if they cause any damage by intruding.