Trusted Execution Environment (TEE)

A Trusted Execution Environment (TEE) is a secure area of a computer or mobile device that is isolated from the main operating system and is designed to protect sensitive information and operations. The TEE provides a secure environment for executing sensitive operations, such as storing and processing sensitive data, such as encryption keys, and performing secure boot.

A TEE typically uses hardware-based security features to protect against tampering and unauthorized access. It is also isolated from the rest of the system, so that even if an attacker gains access to the operating system or other parts of the device, the TEE remains protected.

In a mobile device, the TEE is typically implemented as a separate processor or co-processor that runs its own operating system. This allows the TEE to provide a secure environment for executing sensitive operations, even if the main operating system is compromised.

TEEs are commonly used in mobile devices to protect sensitive information, such as biometric data and payment information. They are also used in servers and other types of devices to provide a secure environment for executing sensitive operations, such as encryption and secure boot.

By providing a secure environment for sensitive data and operations, TEEs help to protect against data theft and other security threats, and provide users with greater privacy and security. They are also a recommended method for meeting the requirements of various security standards, such as the Payment Card Industry Data Security Standard (PCI DSS).