Which of the following is an example of a passive attack initiated through the Internet?
Denial of service
Internet security threats/vulnerabilities are divided into passive and active attacks. Examples of
passive attacks include network analysis, eavesdropping and traffic analysis. Active attacks include
brute force attacks, masquerading, packet replay, message modification, unauthorized access
through the Internet or web-based services, denial-of-service attacks, dial-in penetration attacks,
e-mail bombing and spamming, and e-mail spoofing.