What are the key features and capabilities of the leading Network Detection and Response (NDR) tools discussed in the article, and how do they help organizations monitor network traffic, detect suspicious behavior, and respond to cyber threats in real time? How do the pros and cons of solutions such as Darktrace, Vectra AI, Cisco Secure Network Analytics, and Corelight influence which platform is most suitable for different security environments like cloud, hybrid, or enterprise networks? In what practical scenarios—such as detecting ransomware spread, identifying insider threats, monitoring encrypted traffic, or investigating unusual network activity—would one NDR solution perform better than others?