Multi-agent AI architectures introduce new security challenges beyond those found in single-agent deployments. Coordinated attacks can exploit the distributed nature of these systems, creating specialized attack surfaces that malicious actors can exploit. To detect and prevent these threats, behavioral analysis forms the foundation of a robust multi-agent security system, incorporating both unsupervised and supervised techniques. Monitoring key behavioral indicators such as communication patterns, decision-making sequences, and goal achievement rates is crucial for identifying early stages of agent compromise before attacks fully materialize. Implementing secure message passing protocols with end-to-end encryption and integrity verification, deploying network traffic analysis tools that examine communication patterns, and using temporal analysis to identify suspicious communication sequences are also essential strategies. Additionally, defense-in-depth strategies, component isolation, formal verification methods, zero-trust architectures, role-based access controls, authentication attestation chains, and specialized security frameworks like the MAESTRO Framework can help reduce vulnerability to coordinated attacks in multi-agent AI systems.