21. A security analyst received an alert regarding multiple successful MFA log-ins for a particular user. When reviewing the authentication logs, the analyst sees the following table of logins. Which of the following are most likely occurring, based on the MFA logs? (Select two)
Answer: B,C
Push phishing and Impossible geo-velocity are most likely occurring.
The analysis of the MFA logs indicates that the user is experiencing push phishing and impossible geo-velocity attacks. These types of attacks exploit user authentication methods in ways that can be observed through the patterns of logins.
A) Dictionary attack
A dictionary attack involves systematically entering every word in a predefined list (dictionary) to guess a password. While this can lead to successful logins, it does not specifically correlate with the patterns observed in the MFA logs, which suggest more sophisticated tactics like push phishing and impossible geo-velocity.
B) Push phishing
Push phishing involves tricking users into approving authentication requests without their knowledge, typically through social engineering. This is consistent with the scenario, as the multiple successful MFA logins could indicate that the user is unwittingly approving requests that are not initiated by them.
C) Impossible geo-velocity
Impossible geo-velocity refers to logins occurring from multiple locations in a timeframe that is not physically possible for a user to travel. This is also suggested by the MFA logs, as the successful logins are likely originating from geographically disparate locations, indicating a possible compromise of the user's account.
D) Subscriber identity module swapping
Subscriber identity module (SIM) swapping involves transferring a phone number to a new SIM card controlled by an attacker. Although this can lead to account compromise, it does not directly relate to the patterns seen in the MFA logs, which do not indicate a SIM card issue.
E) Rogue access point
A rogue access point is an unauthorized Wi-Fi access point that can be used to intercept data. While this poses a security risk, it does not explain the specific patterns seen in the MFA logs, which point more towards active login attempts rather than interception.
F) Password spray
Password spraying involves attempting a small number of commonly used passwords across many accounts. Although this can lead to successful logins, it does not account for the specific user behavior and authentication patterns reflected in the logs, which suggest targeted attacks like push phishing and impossible geo-velocity.
Conclusion
The correct answers, push phishing and impossible geo-velocity, are both supported by the evidence in the MFA logs, indicating targeted attempts to gain unauthorized access. Other options fail to connect with the specific behaviors observed, making them less relevant to the security incident at hand.