Best AI Agent Security Platforms for GitHub Copilot

Prompt Security allows businesses to leverage Generative AI while safeguarding against various risks that could affect their applications, workforce, and clientele. It meticulously evaluates every interaction involving Generative AI—ranging from AI applications utilized by staff to GenAI features integrated into customer-facing services—ensuring the protection of sensitive information, the prevention of harmful outputs, and defense against GenAI-related threats. Furthermore, Prompt Security equips enterprise leaders with comprehensive insights and governance capabilities regarding the AI tools in use throughout their organization, enhancing overall operational transparency and security. This proactive approach not only fosters innovation but also builds trust with customers by prioritizing their safety.

Palo Alto Networks Cortex Agentic Endpoint Security (AES) is an endpoint protection and AI security governance platform designed to secure autonomous agents, developer tools, and software components across enterprise devices. The software provides continuous discovery of AI applications, local language models, MCP servers, browser extensions, IDE plugins, and open-source packages that may introduce security risks. Its AI-native visibility capabilities help security teams identify unauthorized software and previously unmanaged AI tools operating within their environments. Context-aware risk analysis evaluates application behavior, permissions, software supply chain relationships, and access to sensitive resources. The platform maintains an AI Context Graph that connects discovered assets with relevant security information to support risk assessment and investigation. Governance tools allow administrators to establish security policies, restrict unsafe interactions, and remove insecure packages or extensions. Runtime protection monitors autonomous agent activity and blocks prohibited actions, malicious downloads, prompt injection attempts, and potential data exfiltration. Cortex AES integrates with Cortex XDR and Prisma AIRS to combine endpoint monitoring with AI application security and threat prevention capabilities. Organizations can deploy the solution as a standalone security product or alongside existing endpoint security infrastructure, with optional managed protection and investigation services from Palo Alto Networks Unit 42.

Pillar Security serves as a comprehensive AI security platform designed to safeguard the agentic workforce throughout the entire AI lifecycle, encompassing stages from development to deployment and ongoing runtime protection. By integrating business context during phases of discovery, testing, and protection, it ensures that security intelligence accumulates across various AI applications, including agents, models, prompts, frameworks, tools, MCP servers, skills, coding agents, and both SaaS and cloud environments. The platform enables organizations to identify and manage AI assets effectively, even those that are unapproved or fall under shadow AI, while also evaluating risks related to supply chain and overall security posture. Additionally, it maps out the attack surfaces associated with agentic systems and verifies critical vulnerabilities that need addressing. With its AI Security Posture Management features, Pillar scrutinizes interconnected agents, tools, permissions, data sources, prompts, models, and supply chain elements to reveal high-risk pathways, policy breaches, misconfigurations, and potential threats posed by coding agents, all of which enhance the understanding of the impact when a single component encounters a breach. Ultimately, Pillar Security empowers organizations to maintain a robust security framework while navigating the complexities of AI technology.