Authentication

Correct Answer: Implement Mobile Device Management (MDM)

Implementing Mobile Device Management (MDM) is the best approach to protect sensitive data on devices in a BYOD (Bring Your Own Device) environment. MDM allows organizations to enforce security policies, encrypt data, remotely wipe lost or stolen devices, and control which apps can access corporate data. Disallowing password-protected devices would reduce security. Permitting only company-owned devices goes against the BYOD policy. Adding stickers with login information is insecure and impractical.

Correct Answer: Multi-factor authentication

Multi-factor authentication is considered the most secure method for accessing high-risk systems. Here's why:

1. It combines multiple authentication factors, typically something you know (password), something you have (token or device), and/or something you are (biometric).

2. This layered approach significantly increases security by requiring an attacker to compromise multiple independent authentication methods.

3. Even if one factor is compromised, the others still protect the account.

Regarding the other options:

Single sign-on (SSO) is convenient but relies on a single point of authentication, which can be a security risk if compromised.

Biometric authentication is secure but can be subject to spoofing or replay attacks if used alone. It's most effective when combined with other factors.

Time-based one-time password (TOTP) is a strong second factor but is not considered the most secure when used alone. It's typically part of a multi-factor authentication system.

Multi-factor authentication combines the strengths of multiple methods, making it the most secure option for high-risk systems.

Correct Answer: Check for any time-based access control policies

Checking for time-based access control policies is the best approach to resolve the issue of an employee being unable to authenticate on certain days of the week. Time-based access control policies can restrict access to systems or applications based on specific days or times, which could explain the employee's authentication issues. Disabling the employee's account or changing their password would not address the root cause of the problem and could potentially hinder their ability to work. Granting the employee administrator access is unnecessary and violates the principle of least privilege, which states that users should only have the minimum level of access required to perform their job functions.