Dorothy E. Denning in her essay “Framework and Principles for Active Cyber ​​Defense” highlights a broad view of active cyber defense drawn from the concept of active air and missile defense. It features a variety of cyber defenses, many of which are comprehensively implemented and considered a threatening environment today. Say no to plagiarism. Get a tailor-made essay on "Why Violent Video Games Shouldn't Be Banned"? Get an Original Essay The cybersecurity community has had a sore spot over the concept of active cyber defense. Gary McGraw, Citadel's Chief Technology Officer, called it "irresponsible," a recipe for disaster, and further added, "The last thing we need in cybersecurity is a bunch of yoo-hoos and lynch mobs." Even if his remarks are based on the concept of active defense based on "hacking back" or "attacking the attacker", if the safety of innocent people is at stake, then it should be stopped. This essay raised many legal and ethical issues whereby the author examined the concepts of active and passive air and missile defense, described a framework for differentiating the variety of cyber defense, and finally suggested the main legal and ethical principles for conducting an active cyber defense. and passive air and missile defense was distinguished from US military doctrine and called Active Air and Missile Defenses (AMD). Dorothy E. Denning cited a surface-to-air and missile defense system that uses an advanced interceptor air missile and a high-performance radar system to detect and shoot down hostile aircraft and tactical ballistic missiles. He suggested that active and passive air defense can be applied to the cyber domain by replacing the term "air and missile" with "cyber" which can be understood as active cyber defense. Active cyber defense consists of direct actions taken against specific threats, while passive cyber defense includes cryptography and steganography. The framework for active cyber defenses has been characterized by four characteristics such as scope of effects, degree of cooperation, types of effects and degree of automation. Dorothy also emphasized ethical and legal principles for active cyber defense. He advised that active cyber defenses should be implemented ethically and legally. Six different main objectives have been suggested to promote such authority, third party immunity, proportionality of necessity, human involvement and civil liberties. Wake Forest University also shared in its research paper called “Moving Ant-Based Cyber ​​Defense Defense” that conventional cyber defenses such as firewalls and intrusion detection system have been static and offer attackers feasibility, but the moving target defense like Ant based cyber defense proves to be a resilient defense that removes the defender. It has been revealed that ant-based cyber defense is not a new concept but is being applied in cybersecurity. It is a complex system with many inputs and sources of variability that includes Sergeants, Sentinels and Sensors are software agents, currently implemented as a new mobile agent framework written in Python. It has also been suggested that ant-based cyber defense employee agent hierarchy between the human supervisor and the asset to be protected. Setting the ABCD defense in motion allows for a moving target capability that the defense moves from machine to machine and is very difficult to subvert. The MITER Corporation imparted information on denial and deception in cyber defense..