A Trusted Execution Environment (TEE) is a secure area of a computing device, separate from the main operating system, that provides a secure and isolated environment for sensitive data and applications. The TEE is designed to protect sensitive information and processes from tampering, hacking, and other forms of unauthorized access.
A TEE can be a hardware-based solution, such as a secure element in a smartphone, or a software-based solution, such as a virtual TEE. The TEE provides an extra layer of security to protect sensitive information, such as financial data, personal information, and other confidential information.
TEEs are widely used in the mobile industry, where they are used to protect data in payment applications, secure messaging apps, and other sensitive applications. They are also used in other areas, such as automotive, healthcare, and the Internet of Things (IoT).
In summary, a TEE provides an additional layer of security to ensure that sensitive information and processes are protected and isolated from the rest of the system, thus maintaining their confidentiality and integrity.