Sure they can. They are extremely smart entities. Demons know about us better than we know ourselves. They know our weakest areas and read our minds too. Let me tell you a story related to one of my clients (let’s call him Joe). Somehow demons opened Joe’s clairaudience ability and Joe was able to hear them. That was one of his biggest problems, driving him crazy. Joe heard distressing noises and voices constantly, everywhere he went. Joe said that every time he tried to contact me or even thought of contacting me for help, the demons yelled at him using profanities telling him “Don’t call Calvin (me)”. They didn’t want to be destroyed and cleared.
Demons can attach to another person, place, property, land, space, and tangible/intangible objects and attack you. They can also attach to the in-between connection between you and any of the above and influence you as if they were directly attached to you. I have found many demons that were attached to furniture, cell phones, Bluetooth devices, computers, and many other objects within a home. This is why whenever I am contacted for help, I ask the client for his/her address in order to scan more thoroughly for demons affecting him/her. When clearing a home, it is crucial to scan the land itself as well. Demons attach not only within/around a home space but attach to the building, the land, and any object within as well.