**4.2 Safety and security**

The issue of safety and security raises a question about how to ensure transfer of the correct data to the right address? As any connected device that uses internet, VR technology in online teaching does not ensure essential security mechanisms for data storage and sharing and communications between VR devices, servers might be sent unencrypted. Like smart phones that can secretly collect any kind of information from everywhere, if VR earphones become universal, everyday devices, then someone might be able to track what you are watching at any time [25]. However, what occurs if someone hacks VR earphones and introduces a visual attack that could cause harmful real-world reactions? There could be several ways hackers put personal information into harm's way if needed.
