How many E-Authentication Levels are there according to the provided classifications?

The classification of E-Authentication levels is based on the National Institute of Standards and Technology (NIST) framework, which defines a systematic approach to ensure secure electronic authentication for users accessing government services. According to the NIST guidelines, there are four distinct levels of E-Authentication, each representing a different risk level and corresponding requirements for identity proofing, credential management, and authentication mechanisms.

These four levels range from low-risk to high-risk scenarios. The lower levels involve simpler authentication methods suitable for less sensitive transactions, while the higher levels require more robust identity verification processes for transactions that involve sensitive data or higher security requirements.

Understanding this classification is important for implementing appropriate measures for securing access to systems and ensuring that the authentication process aligns with the risk associated with the information or services being accessed.