CompTIA Security+

Answer: D - John is being subjected to a Blue jacking attack.

Key Takeaway: Blue jacking is the sending of unsolicited messages or spam over the Bluetooth connection. Bluesnarfing is gaining unauthorized access through a Bluetooth connection. This access can be gained through a phone, PDA, or any device using Bluetooth. Once access has been gained, the attacker can copy any data in the same way they would with any other unauthorized access.