What term describes a network of computers that have been compromised by hackers with malware?

The term that accurately describes a network of computers compromised by hackers through the installation of malware is "Botnet." A botnet consists of multiple infected devices that are remotely controlled by an attacker, allowing them to execute various automated tasks, such as sending spam, stealing data, or launching Distributed Denial of Service (DDoS) attacks. Each individual computer within this network is often referred to as a "bot" or "zombie."

While "zombie network" is a term related to botnets, it is not as widely used to describe the overall network of compromised computers as "botnet" is. "Phishing network" refers to a strategy used to deceive individuals into revealing personal information, and "Intrusion detection system" is a security technology designed to monitor network traffic for suspicious activity but does not describe a compromised network itself. Therefore, the term that best encapsulates the concept of a network of hacked computers is "botnet."