This is the final piece of my three-part blog on the topic human intelligence vs. AI, and how AI is being used successfully to address various problems in cybersecurity. In the first part of the blog, I offered a definition of intelligence and its three components: a store of knowledge, mechanisms to acquire knowledge, and the ability to use knowledge for problem-solving. We differentiated between the notions of general AI (which does not exist today) and narrow AI (which certainly does). In Part 2, we reviewed the relationship between the terms AI, machine learning, expert systems, and deep learning, and looked at several narrow AI systems in domains outside of cybersecurity. Now, let's look at the application of AI in cybersecurity.