Availability is the information security element that ensures that Stella's transaction status is immediately reflected in her bank account in this scenario. Information security is the practice of protecting information and information systems from unauthorized access, use, disclosure, modification, or destruction. Information security can be based on three fundamental principles: confidentiality, integrity, and availability.
Confidentiality is the principle that ensures that information is accessible only to authorized parties and not disclosed to unauthorized parties. Integrity is the principle that ensures that information is accurate, complete, and consistent and not altered or corrupted by unauthorized parties. Availability is the principle that ensures that information and information systems are accessible and usable by authorized parties when needed. In the scenario, Stella purchased a smartwatch online using her debit card. After making payment for the product through the payment gateway, she received a transaction text message with a deducted and available balance from her bank. This means that her transaction status was immediately reflected in her bank account, which indicates that availability was ensured by her bank's information system.

* GDPR Overview:
* The General Data Protection Regulation (GDPR) is a regulation in EU law on data protection and privacy for individuals within the European Union and the European Economic Area.

Data in transit is the state of data when it is being processed between the ecommerce website and the payment gateway in the above scenario. Data in transit is data that is moving from one location to another over a network, such as the internet, a LAN, or a WAN. Data in transit can be vulnerable to interception, modification, or theft by unauthorized parties, so it needs to be protected by encryption, authentication, and other security measures . Data at rest is data that is stored on a device or a media, such as a hard drive, a flash drive, or a cloud storage. Data in active is data that is currently being accessed or modified by an application or a user. Data in use is data that is loaded into the memory of a device or a system for processing or computation.

It identifies the type of physical lock used by the organization in the above scenario. A physical lock is a device that prevents unauthorized access to a door, gate, cabinet, or other enclosure by using a mechanism that requires a key, code, or biometric factor to open or close it. There are different types of physical locks, such as:
Combination lock: This type of lock requires typing a sequence of numbers and letters by using a rotating dial that intermingles with several other rotating discs. This type of lock is suitable for securing safes, lockers, or cabinets that store valuable items or documents.
Digital lock: This type of lock requires entering a numeric or alphanumeric code by using a keypad or touchscreen. This type of lock is suitable for securing doors or gates that require frequent access or multiple users.
Mechanical lock: This type of lock requires inserting and turning a metal key that matches the shape and size of the lock. This type of lock is suitable for securing doors or gates that require simple and reliable access or single users.
Electromagnetic lock: This type of lock requires applying an electric current to a magnet that attracts a metal plate attached to the door or gate. This type of lock is suitable for securing doors or gates that require remote control or integration with other security systems.
In the above scenario, the organization used a combination lock that requires typing a sequence of numbers and letters by using a rotating dial that intermingles with several other rotating discs.