Artemis Secures $70M to Automate Cybersecurity With AI Agents
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Artemis Secures $70 Million to Automate Cybersecurity With AI Agents

Founded by a former AWS GuardDuty leader, the startup aims to replace traditional SIEM tools.

4/18/2026
Ghita Khalfaoui
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Cybersecurity startup Artemis has emerged from stealth with $70 million in funding to challenge the security information and event management (SIEM) market. Led by a former Amazon GuardDuty product leader, the company leverages AI to provide a more cohesive understanding of threats. The platform aims to automate threat detection and response, dramatically reducing investigation times for security teams.


Addressing Modern Security Challenges

Security teams are overwhelmed with data from disparate tools, creating a gap between knowing about a threat and understanding its context. Traditional systems generate a high volume of generic alerts that require extensive manual investigation. This reactive approach is too slow to keep pace with sophisticated, fast-moving attackers.

Modern cyberattacks unfold across multiple environments, including cloud infrastructure, identity systems, and endpoints. Existing security tools operate in silos, failing to connect the dots and provide a unified view of an attacker's behavior. This fragmentation leaves organizations vulnerable as they struggle to piece together an incident's full story.

An AI-Driven, Contextual Approach

Artemis addresses these issues by using AI to continuously model each customer's unique IT environment. The platform learns the normal patterns of interaction between users, machines, and applications across all log sources. This foundational understanding provides the context to accurately identify and evaluate potential threats.

This contextual model powers what the company calls "agentic protection," where AI agents autonomously handle the threat lifecycle. These agents proactively hunt for suspicious activity and generate highly accurate, environment-specific detections. This automation transforms the security analyst's role from data assembly to strategic decision-making.

The platform further streamlines operations with a natural language interface, allowing analysts to conduct investigations using simple questions. This eliminates the need for complex query languages, making security operations more accessible and efficient. Tasks that once took weeks can now be completed in just minutes.

Significant Funding and Industry Backing

The company's $70 million in capital consists of a $55 million Series A round led by Felicis and a $15 million seed round. The seed funding was co-led by First Round Capital and Brightmind. This investment will be used to scale operations and further develop the platform's capabilities.

Artemis was founded seven months ago by CEO Shachar Hirshberg, who previously led product for AWS GuardDuty, and AI leader Dan Ring. The venture has attracted support from prominent industry figures, including founders from Abnormal AI and Demisto. This backing signals strong confidence in the company's vision.

Early Success and Future Outlook

Despite its recent launch, Artemis is already in production with major companies in the financial and technology sectors. The company reports that its early customers have achieved a 94% reduction in their mean time to detect and respond. This demonstrates the platform's immediate impact on security operations.

Looking ahead, Artemis aims to shift the cybersecurity paradigm from reactive alert chasing to proactive, intelligent defense. The company's vision is to create a security system that functions like a biological immune system, constantly learning and adapting. This approach is designed to protect enterprises in the new era of AI-driven threats.


With its significant new funding and a leadership team with deep industry expertise, Artemis is well-positioned to disrupt the cybersecurity market. Its AI-driven platform offers a compelling alternative to legacy SIEMs by focusing on contextual understanding and autonomous response. The company's launch marks a step toward a more adaptive future for enterprise security.