# Review of Smart-Home Security Using the Internet of Things
## 3 Smart-Home Ecosystem
### IoT in Smart Homes
Moreover, in the case of AR, the user is experiencing augmented reality indoors during his/her daily activities and (remote) working hours. Therefore, in an augmented office environment, the glasses' camera would capture the computer's (or other device's) screen, including the user inputting his/her login information to various services and applications, as well as confidential and private conversations. Additionally, as a portable device, AR/VR glasses are easier to lose when the user takes them with him/her outside, or may even be stolen. Therefore, more advanced controls are required of the device-level security, e.g., remote deletion of data or blocking of the device. Smart locks are installed in doors and windows to control their shielding [54]. The lock itself can be materialized via physical means as an ordinary lock or with magnetic solutions. Usually, someone can freely open from inside (also complying with safety requirements for cases like building evacuation or when electricity or Internet connection are cut off). To enter the private space, someone can unlock the equipment via various means, including control through the Internet and a related mobile application, performing a wireless challenge-response protocol with a smart phone, prompting a code in a pad, authenticating via biometric sensors, or using a card or other access token, as well as the ordinary use of a physical key (again for safety and dependability reasons). Moreover, smart locks constitute a popular solution for short-term hiring apartments (e.g., for the Airbnb and Booking platforms), where the owner produces new access codes/keys/tokens for every new client, as well as the cleaners or other tenders. Hotels and cruise ships are mostly in favor of using magnetic cards as access tokens to rooms and cabins, respectively. The security of smart locks is of paramount importance. Mostly, attacks are originated by criminals who want to gain physical access to the private space. The attackers might try to exploit vulnerabilities in the communication link and transmission of data, tampering physically with the equipment, overcoming biometric authentication, or performing social-engineering attacks to gain the access credentials. Surveillance IP cameras are another popular feature of smart homes [55]. The cameras are gaining Internet access via the router (Ethernet or Wi-Fi connection) and are accessible from outside, usually via the user's smart phone and a related application. Ordinarily, the cameras record video and audio, and the communication is bidirectional, with the user being able to rotate the camera or talk through its speaker. However, most users are installing this system by themselves, leaving default configurations including default or no passwords to login and access the cameras [9]. Attackers may exploit this functionality to spot the residents' absence for physical assaults, record residents and violate or harm their privacy, or even talk to children and babies performing spooky pranks. The smart vacuum is a preliminary robotic device that can be found in modern houses [56]. Vacuums have autonomous operation to scan the area and clean the available space, and they can be controlled via an RF telecontrol. Smart vacuums may connect with the router for local Wi-Fi interaction or communication via the Internet. The user exploits these two options via his/her smart phone and a related application. Thereupon, the user can access more advance functionality, e.g., view a map of the scanned space and make adjustments, schedule cleaning operations, review historic data, etc. Thus, a vacuum may maintain sensitive information, like the house floor mapping and the indoor arrangement. In some cases, smart vacuums utilize a camera senor to navigate the floor and avoid obstacles, also capturing sensitive information from the home's inside, as well as the residents while living in their private space. Other devices and sensors can be found in a smart environment.