Multi-agent AI systems use distributed intelligence for better scalability, adaptability, and specialization, but this decentralized nature creates security blind spots that hackers are targeting. Detecting and preventing malicious agent behaviors is essential in these systems to prevent financial losses, privacy violations, or safety threats. To address this challenge, Galileo provides comprehensive security solutions tailored for multi-agent AI systems, including behavioral monitoring, trust and reputation systems, secure communication protocols, fine-grained access control, and robust agent verification mechanisms. These strategies aim to detect and prevent malicious behaviors in multi-agent systems by implementing continuous behavioral monitoring and anomaly detection, deploying trust and reputation systems, designing secure communication protocols with zero-trust principles, implementing fine-grained access control and permission boundaries, and creating robust agent verification and sandboxing mechanisms. By adopting these solutions, organizations can protect their multi-agent AI systems from threats and build more reliable, effective, and trustworthy AI applications.