CompTIA ITF+ Practice Test

Which of the following security concerns is a threat to confidentiality?

1. Brute-force attack

2. Replay attack

3. Denial-of-Service (DoS) attack

4. Phishing attack

The correct answer is: Replay attack

A brute-force attack involves repeatedly trying different combinations of characters in order to guess the correct password or encryption key. This can compromise confidentiality if successful, but it is not specifically targeted at confidentiality. A replay attack involves intercepting and retransmitting data, which can lead to unauthorized access to sensitive information and therefore a threat to confidentiality. A denial-of-service (DoS) attack disrupts a network or system, making it unavailable to users. While this can affect confidentiality if sensitive information is unable to be accessed, it is not specifically targeting confidentiality. A phishing attack involves tricking users into giving away sensitive information through fraudulent means. While this can also compromise confidentiality, it is not specifically aimed at confidentiality.