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Rein Security Launches $25M Runtime Guard for AI Agents

Rein Security Launches $25M Runtime Guard for AI Agents

FIRST LOOK ATLAS OWASP MEDIUM Moderate risk · Monitor closely ▲ 7.2 SecurityWeek

Rein Security has raised $25 million to build runtime security controls for AI agents, targeting the largely unaddressed gap of monitoring and constraining agentic AI behaviour as it executes in production. This closes a meaningful defender blind spot: most existing security tooling was designed for static software and cannot observe or intervene in the dynamic, multi-step decision chains that AI agents produce. Residual gaps remain around what specific runtime signals Rein captures, how the platform integrates with diverse agent orchestration frameworks, and whether coverage extends to multi-agent pipelines.

doxx.net Launches ADN Platform to Govern AI Agents Online

doxx.net Launches ADN Platform to Govern AI Agents Online

FIRST LOOK ATLAS OWASP MEDIUM Moderate risk · Monitor closely ▲ 6.8 SecurityWeek

doxx.net has introduced its Agentic Defense Network (ADN) platform, designed to monitor and constrain AI agents operating on the internet under user-delegated authority, preventing unintended or out-of-scope actions. This closes a meaningful gap for defenders who currently lack runtime guardrails to supervise autonomous agents acting on behalf of users across external web surfaces. The platform's real-world maturity, integration breadth, and coverage of non-browser agentic channels remain open questions as the capability scales.

AI-Powered Adversarial Attacks Spark Artemis Defense

AI-Powered Adversarial Attacks Spark Artemis Defense

ATLAS OWASP MEDIUM Moderate risk · Monitor closely ▲ 6.2 SecurityWeek

Artemis, a cybersecurity startup focused on AI-powered threat defence, has emerged from stealth with $70 million in funding, positioning itself to counter AI-driven attacks across applications, users, endpoints, and cloud workloads. The emergence signals growing investor confidence in purpose-built AI security platforms designed to address the escalating threat landscape of adversarial AI. While details on specific technical capabilities remain sparse, the company's broad scope suggests coverage of multiple attack surfaces increasingly targeted by AI-enabled threat actors.

AGENTIC AISecurityWeekMEDIUMAI Agent Prompt Injection and Data LeakageThreats Rise

AI Agent Prompt Injection and Data Leakage Threats Rise

ATLAS OWASP MEDIUM Moderate risk · Monitor closely ▲ 6.5 SecurityWeek

Capsule Security, an Israeli startup, has emerged from stealth with $7 million in seed funding focused on runtime security for AI agents, continuously monitoring their behaviour to detect and prevent unsafe or malicious actions. This positions the company within the rapidly growing agentic AI security space, where autonomous agents executing actions on behalf of users represent a significant and underexplored attack surface. The funding signals growing investor recognition of the risks posed by unmonitored AI agent behaviour, including prompt injection, excessive agency, and unintended tool use.

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