Sakis's network begins to experience symptoms of slowness. Upon investigation, he realizes that the network is being bombarded with TCP SYN packets and believes that his organization is the victim of a denial-of-service attack. What principle of information security is being violated?

A SYN flood attack is an example of a denial-of-service attack, which jeopardizes the availability of a targeted network. SYN flood attacks do not target integrity or confidentiality. While this is a denial-of-service attack, denial is not the correct answer because you are asked which principle is being violated, not what type of attack took place. Denial-of-service attacks target resource availability.