Adversarial exploits and large language model (LLM) attacks are two distinct types of threats targeting multi-agent AI systems, requiring different defensive strategies. LLM attacks focus on specific entry points such as prompt parsers, decoding functions, or tokenization processes within individual agents, creating a replicated but contained threat surface that scales with the number of language model components. In contrast, adversarial exploits span coordination-level infrastructure, including shared databases, inter-agent messaging systems, and task synchronization logic, targeting fundamentally different layers of the stack. Defending against LLM attacks involves securing input processing through prompt filtering and semantic validation, detecting behavioral anomalies at the agent level, and continuously monitoring output quality. For adversarial exploits, defense requires securing whole infrastructure that supports multi-agent coordination, including applying Byzantine fault-tolerant consensus to prevent tampering with shared state across agents and enforcing multi-factor verification at all authentication points. Tools like Galileo provide real-time protection, comprehensive multi-agent observability, advanced behavioral monitoring and authentication, research-backed security metrics, proactive risk prevention, and compliance reporting to effectively defend against both types of threats.