Autonomous defense refers to cybersecurity systems capable of independently detecting, analyzing, and responding to threats without human intervention. Leveraging artificial intelligence, machine learning, and automation, these systems continuously monitor networks and endpoints for suspicious activities. When a potential threat is identified, autonomous defense solutions can take immediate action, such as isolating affected devices, blocking malicious traffic, or deploying patches, all in real time. This approach significantly reduces response times and helps organizations cope with the increasing volume and sophistication of cyberattacks. While autonomous defense enhances security, it also raises concerns about false positives, system errors, and the need for oversight to ensure actions align with organizational policies.