● Covered by 4 sources · 20 reportsMedium impact19 neutral1 positive
Three AI Security Startups Raise Over $228 Million in Funding Rounds
Key points
- Onyx Security raised $113 million in Series B funding, totaling $153 million.
- Obsidian Security secured $85 million in Series D, reaching a $1.1 billion valuation.
- Mindgard received $30 million in Series A funding, bringing its total to $42 million.
- Funds will expand AI agent control, agentic AI security, and AI red-teaming platforms.
- Investments address risks of AI agents and models in corporate systems.
- Alice raised $140 million, totaling $280 million.
- Apax Digital Funds led Alice's funding round.
- Alice partners with AI developers to stress-test foundational models.
- Alice offers continuous red-teaming and dynamic runtime guardrails for models in production.
- HiddenLayer raised $100 million in Series B funding.
- HiddenLayer previously raised $50 million in Series A funding.
- Gartner projects companies will spend $2.83 billion on AI security products this year.
- Gartner expects AI security spending to reach nearly $4.78 billion next year.
- Chris Sestito is the co-founder and CEO of HiddenLayer.
- HiddenLayer's total funding is over $155 million.
- HiddenLayer was founded in 2022.
- HiddenLayer is based in Austin.
- HiddenLayer's platform provides discovery, AI supply chain security, attack simulation, and runtime protection.
- HiddenLayer will focus on securing autonomous agents that write, review, and ship code.
- HelmGuard raised $7.3 million in seed funding.
- Infinity Ventures and Frontline co-led HelmGuard's funding round.
- HelmGuard was founded in 2024.
- John Daley is HelmGuard's CEO.
- Jack Miller is HelmGuard's CTO.
- HelmGuard is based in the UK.
- HelmGuard's platform automates risk management and assesses risk signals from source systems.
- HelmGuard's solution reduces assessment cycles to hours.
- Comp AI raised $34 million in Series A funding.
- Comp AI's total funding is over $36 million.
- Comp AI was founded in January 2025.
- Comp AI is based in Florida.
- Comp AI's platform automates GRC processes using AI.
- Comp AI's platform performs onboarding, evidence gathering, policy generation, control monitoring, and assessment.
- Comp AI will expand its platform into continuous cybersecurity.
- Roo Capital and Grand Ventures led Comp AI's funding round.
- Baselayer raised $35 million in Series A funding.
- Baselayer's total funding is about $40 million.
- Baselayer was founded in 2023.
- M13 led Baselayer's Series A funding round.
- Baselayer is based in San Francisco.
- Jonathan Awad is Baselayer's co-founder and CEO.
- Baselayer helps financial institutions verify businesses and assess fraud risk.
- Baselayer will extend its identity technology to verify AI agents.
- Baselayer's platform focuses on Know Your Business (KYB) identity verification, fraud detection, and risk management.
- Over 2,000 financial institutions use Baselayer's technology.
- Baselayer has about 50 employees.
- Outerlimit raised $16 million in pre-seed funding.
- Outerlimit is based in New York.
- Outerlimit was founded by Tony Pepper, Neil Larkins, and Peter Vincent.
- Outerlimit offers a decentralized security and authorization layer for autonomous agentic AI.
- AlbionVC, Evolution Equity Partners, and Crane Venture Partners led Outerlimit's funding round.
- Island raised $400 million in Series F funding.
- Island's valuation is $6.4 billion.
- Evolution Equity Partners led Island's funding round.
- Island's total investment is over $1 billion.
- Island plans to expand into Europe, Asia, and the Middle East.
- Island plans to increase its workforce from 1,000 to 1,500 employees by mid-next year.
- Island is based in Dallas.
- Island's platform provides an agentic control plane for human and automated workflows.
- Island's platform uses an endpoint-outward SASE architecture.
- Island's platform delivers zero trust network access (ZTNA), device posture assessment, and inline data loss prevention (DLP).
- Island's platform blocks unapproved clipboard transfers, downloads, and screen captures.
- Island's platform validates user credentials and environmental context for ZTNA.
- Island's solution provides guardrails to separate proprietary information from external language models.
- Kontext Security launched publicly with $4 million in seed funding.
- 42CAP led Kontext Security's funding round, with support from a16z CSX and HTGF.
- Jens Ernstberger and Michel Osswald co-founded Kontext Security.
- Kontext Security is based in Munich, Germany.
- Kontext Security's platform provides visibility and control over AI agent actions.
- Kontext Security's platform evaluates AI agents against security policies in real time.
- Kontext Security's platform considers agent identity, task, target resource, and requested action.
- Kontext Security's platform allows observation of agent behavior before enforcing policies.
- Kontext Security's solution records agent behavior and platform decisions.
- Kontext Security plans to expand its engineering team.
- Instinct raised $1 billion in Series C funding.
- Instinct's valuation is $10 billion.
- Instinct's previous valuation was $2.5 billion a month prior.
- Instinct launched its invite-only service in August 2026.
- Instinct uses its own phone number and computer.
- Instinct rolled out a "concierge" feature for phone calls.
- SiMa.ai raised $150 million in Series C funding.
- SiMa.ai's valuation is $1.45 billion.
- Fidelity Management & Research Company and Amplify co-led SiMa.ai's funding.
- SiMa.ai was founded in 2018 by Krishna Rangasayee.
- SiMa.ai's total capital raised is over $500 million.
- SiMa.ai was previously valued at $960 million after an $85 million Series B in July 2025.
- Rig Security emerged from stealth with $12 million in seed funding.
- Ten Eleven Ventures and Brightmind Partners led Rig Security's funding round.
- CrowdStrike Falcon Fund participated in Rig Security's funding round.
- Rig Security was founded in 2025 by Guy Kozliner.
- Rig Security is based in Tel Aviv.
- Rig Security's platform distinguishes between legitimate human actions and AI agent actions.
- Rig Security's platform addresses security gaps created by autonomous AI agents.
- Guy Kozliner was formerly a member of the CTO team at Wiz.
- Ami Luttwak is an angel investor in Rig Security.
- Reco raised $55 million in a strategic funding round.
- Reco's total funding is $140 million.
- AT&T Ventures led Reco's funding round.
- Forestay and Quadrille Capital are new investors in Reco.
- Reco was founded in 2020.
- Reco is based in New York.
- Reco integrates with OpenAI, Anthropic, Microsoft's Copilot, Salesforce, ServiceNow, and Workday.
- Reco will hire new talent across sales, partnerships, channels, and customer support.
- EliseAI raised $350 million, doubling its valuation to $4 billion.
- Andreessen Horowitz and Bessemer Ventures co-led EliseAI's funding round.
- EliseAI was founded in 2017.
- EliseAI automates administrative and operational tasks for housing and healthcare companies.
- EliseAI's software is used by 1 in 6 apartments across the country.
- EliseAI passed $200 million in ARR.
- EliseAI launched an AI "teammate" called Apollo.
- Apollo helps with tasks inside the EliseAI platform.
- Apollo acts across every role on a property team.
- EliseAI automates patient-related paperwork for specialty physician groups.
- Osavul raised $10 million in Series A funding.
- 33N Ventures led Osavul's funding round.
- Osavul's total funding is approximately —12 million.
- Osavul is based in Luxembourg.
- Osavul's AI platform analyzes open and privileged data.
- Osavul identifies who is targeting a customer and maps that intent.
- Osavul's assessments are evidence-traced and reviewed by analysts.
- Osavul's platform can run on-premises within sovereign infrastructure.
- Osavul was initially developed during Russia’s invasion of Ukraine.
- Osavul serves government, defense, and security institutions in over 10 countries.
- Osavul is one of the tech companies delivering NATO’s Information Environment Assessment Capability.
Significant Investments in AI Security
Three AI security startups, Onyx Security, Obsidian Security, and Mindgard, have collectively announced over $228 million in new funding. These investments are directed towards developing and scaling solutions for securing AI agents, models, and applications within enterprise settings, reflecting a growing need for oversight and protection in AI adoption.
Onyx Security's Funding for AI Agent Control
Onyx Security announced a $113 million Series B funding round, led by Bessemer Venture Partners, with participation from Cyberstarts, TCV, Conviction, FirstMark, Vintage, QuantumLight, and G Squared. This brings the Israeli company's total raised to $153 million since its founding two years ago. The new capital will be used to train its proprietary models and scale go-to-market efforts.
Onyx Security offers a centralized platform designed to identify and regulate the use of advanced AI tools across corporate networks. Its technology uses proprietary models to track AI agent decision-making, intervening to rectify unintended or malicious behavior across SaaS, cloud, and endpoint environments.
Obsidian Security Expands Agentic AI Security
Obsidian Security raised $85 million in a Series D funding round, led by Crescent Cove Advisors, with participation from Greylock Partners and Menlo Ventures. This investment values the company at $1.1 billion and brings its total raised to over $200 million. The funds will accelerate its expansion into agentic AI security.
Obsidian Security's platform governs AI agents and SaaS applications, monitoring access and execution within third-party enterprise systems like data warehouses, developer tools, CRMs, and collaboration apps. It includes a runtime governance layer to identify and stop privilege escalation, over-broad data access, and policy violations based on OWASP-aligned risk criteria.
Mindgard's Focus on AI Red-Teaming and Protection
Mindgard secured $30 million in a Series A funding round, led by Album VC, with additional support from Karma Ventures and previous investors .406 Ventures, Atlantic Bridge, IQ Capital, and Lakestar. This brings the total raised by the company to approximately $42 million. The funding will be used to scale its product, engineering, sales, and marketing teams.
Founded in 2022 and spun out of Lancaster University, Mindgard provides an automated AI security and red-teaming platform. The platform identifies and exploits psycho-technical attack surfaces within AI agents, models, and applications, delivering runtime protection. Mindgard has identified over 150 vulnerabilities in popular AI products, including a zero-day code execution flaw in Cursor IDE and security defects in Google Antigravity and ChatGPT.
Addressing AI Risks in the Enterprise
These investments underscore the industry's recognition of the security challenges posed by AI adoption. As enterprises increasingly integrate AI agents and models, solutions that provide oversight, governance, and protection against vulnerabilities and malicious behavior are becoming critical for safe deployment and operation.
Updates
- Osavul raised $10 million in Series A funding.
- 33N Ventures led Osavul's funding round.
- Osavul's total funding is approximately —12 million.
- Osavul is based in Luxembourg.
- Osavul's AI platform analyzes open and privileged data.
- Osavul identifies who is targeting a customer and maps that intent.
- Osavul's assessments are evidence-traced and reviewed by analysts.
- Osavul's platform can run on-premises within sovereign infrastructure.
- Osavul was initially developed during Russia’s invasion of Ukraine.
- Osavul serves government, defense, and security institutions in over 10 countries.
- Osavul is one of the tech companies delivering NATO’s Information Environment Assessment Capability.
- EliseAI raised $350 million, doubling its valuation to $4 billion.
- Andreessen Horowitz and Bessemer Ventures co-led EliseAI's funding round.
- EliseAI was founded in 2017.
- EliseAI automates administrative and operational tasks for housing and healthcare companies.
- EliseAI's software is used by 1 in 6 apartments across the country.
- EliseAI passed $200 million in ARR.
- EliseAI launched an AI "teammate" called Apollo.
- Apollo helps with tasks inside the EliseAI platform.
- Apollo acts across every role on a property team.
- EliseAI automates patient-related paperwork for specialty physician groups.
- Reco raised $55 million in a strategic funding round.
- Reco's total funding is $140 million.
- AT&T Ventures led Reco's funding round.
- Forestay and Quadrille Capital are new investors in Reco.
- Reco was founded in 2020.
- Reco is based in New York.
- Reco integrates with OpenAI, Anthropic, Microsoft's Copilot, Salesforce, ServiceNow, and Workday.
- Reco will hire new talent across sales, partnerships, channels, and customer support.
- Rig Security emerged from stealth with $12 million in seed funding.
- Ten Eleven Ventures and Brightmind Partners led Rig Security's funding round.
- CrowdStrike Falcon Fund participated in Rig Security's funding round.
- Rig Security was founded in 2025 by Guy Kozliner.
- Rig Security is based in Tel Aviv.
- Rig Security's platform distinguishes between legitimate human actions and AI agent actions.
- Rig Security's platform addresses security gaps created by autonomous AI agents.
- Guy Kozliner was formerly a member of the CTO team at Wiz.
- Ami Luttwak is an angel investor in Rig Security.
- Instinct raised $1 billion in Series C funding.
- Instinct's valuation is $10 billion.
- Instinct's previous valuation was $2.5 billion a month prior.
- Instinct launched its invite-only service in August 2026.
- Instinct uses its own phone number and computer.
- Instinct rolled out a "concierge" feature for phone calls.
- SiMa.ai raised $150 million in Series C funding.
- SiMa.ai's valuation is $1.45 billion.
- Fidelity Management & Research Company and Amplify co-led SiMa.ai's funding.
- SiMa.ai was founded in 2018 by Krishna Rangasayee.
- SiMa.ai's total capital raised is over $500 million.
- SiMa.ai was previously valued at $960 million after an $85 million Series B in July 2025.
- Kontext Security launched publicly with $4 million in seed funding.
- 42CAP led Kontext Security's funding round, with support from a16z CSX and HTGF.
- Jens Ernstberger and Michel Osswald co-founded Kontext Security.
- Kontext Security is based in Munich, Germany.
- Kontext Security's platform provides visibility and control over AI agent actions.
- Kontext Security's platform evaluates AI agents against security policies in real time.
- Kontext Security's platform considers agent identity, task, target resource, and requested action.
- Kontext Security's platform allows observation of agent behavior before enforcing policies.
- Kontext Security's solution records agent behavior and platform decisions.
- Kontext Security plans to expand its engineering team.
- Island raised $400 million in Series F funding.
- Island's valuation is $6.4 billion.
- Evolution Equity Partners led Island's funding round.
- Island's total investment is over $1 billion.
- Island plans to expand into Europe, Asia, and the Middle East.
- Island plans to increase its workforce from 1,000 to 1,500 employees by mid-next year.
- Island is based in Dallas.
- Island's platform provides an agentic control plane for human and automated workflows.
- Island's platform uses an endpoint-outward SASE architecture.
- Island's platform delivers zero trust network access (ZTNA), device posture assessment, and inline data loss prevention (DLP).
- Island's platform blocks unapproved clipboard transfers, downloads, and screen captures.
- Island's platform validates user credentials and environmental context for ZTNA.
- Island's solution provides guardrails to separate proprietary information from external language models.
- Outerlimit raised $16 million in pre-seed funding.
- Outerlimit is based in New York.
- Outerlimit was founded by Tony Pepper, Neil Larkins, and Peter Vincent.
- Outerlimit offers a decentralized security and authorization layer for autonomous agentic AI.
- AlbionVC, Evolution Equity Partners, and Crane Venture Partners led Outerlimit's funding round.
- Baselayer raised $35 million in Series A funding.
- Baselayer's total funding is about $40 million.
- Baselayer was founded in 2023.
- M13 led Baselayer's Series A funding round.
- Baselayer is based in San Francisco.
- Jonathan Awad is Baselayer's co-founder and CEO.
- Baselayer helps financial institutions verify businesses and assess fraud risk.
- Baselayer will extend its identity technology to verify AI agents.
- Baselayer's platform focuses on Know Your Business (KYB) identity verification, fraud detection, and risk management.
- Over 2,000 financial institutions use Baselayer's technology.
- Baselayer has about 50 employees.
- Comp AI raised $34 million in Series A funding.
- Comp AI's total funding is over $36 million.
- Comp AI was founded in January 2025.
- Comp AI is based in Florida.
- Comp AI's platform automates GRC processes using AI.
- Comp AI's platform performs onboarding, evidence gathering, policy generation, control monitoring, and assessment.
- Comp AI will expand its platform into continuous cybersecurity.
- Roo Capital and Grand Ventures led Comp AI's funding round.
- HelmGuard raised $7.3 million in seed funding.
- Infinity Ventures and Frontline co-led HelmGuard's funding round.
- HelmGuard was founded in 2024.
- John Daley is HelmGuard's CEO.
- Jack Miller is HelmGuard's CTO.
- HelmGuard is based in the UK.
- HelmGuard's platform automates risk management and assesses risk signals from source systems.
- HelmGuard's solution reduces assessment cycles to hours.
- HiddenLayer's total funding is over $155 million.
- HiddenLayer was founded in 2022.
- HiddenLayer is based in Austin.
- HiddenLayer's platform provides discovery, AI supply chain security, attack simulation, and runtime protection.
- HiddenLayer will focus on securing autonomous agents that write, review, and ship code.
- HiddenLayer raised $100 million in Series B funding.
- HiddenLayer previously raised $50 million in Series A funding.
- Gartner projects companies will spend $2.83 billion on AI security products this year.
- Gartner expects AI security spending to reach nearly $4.78 billion next year.
- Chris Sestito is the co-founder and CEO of HiddenLayer.
- Alice raised $140 million, totaling $280 million.
- Apax Digital Funds led Alice's funding round.
- Alice partners with AI developers to stress-test foundational models.
- Alice offers continuous red-teaming and dynamic runtime guardrails for models in production.
✨ This summary was generated by AI from the outlets' reporting listed below. It is not independently verified and may contain errors — check the original sources. How BrevFeed works →
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How outlets covered it
Osavul, a hybrid risk intelligence company, secured $10 million in Series A funding to expand its AI platform for detecting hostile intent across cyber, physical, and information domains. This funding will allow Osavul to extend its services to enterprises and critical infrastructure operators, addressing the increasing threat of hybrid attacks from adversarial states.
AI startup EliseAI secured $350 million in funding, doubling its valuation to $4 billion. The company provides AI solutions for administrative and operational tasks in the housing and healthcare sectors.
Reco, a cybersecurity firm specializing in agentic AI security, raised $55 million in a strategic funding round, bringing its total funding to $140 million. The company provides visibility and governance for AI agents interacting with business applications and data, addressing risks posed by AI agent activity in enterprise environments.
Reco, an AI security startup, raised $55 million as it broadens its focus from SaaS and AI platform security to securing the entire AI agent ecosystem. This shift addresses the rapid deployment of AI agents by enterprises, which creates new security challenges and a competitive market for AI agent security solutions.
Rig Security emerged from stealth with $12 million in seed funding to address security gaps created by autonomous AI agents. The company's platform aims to distinguish between legitimate human actions and those of AI agents operating under human identities, which current security tools cannot do.
SiMa.ai, a startup specializing in chips and software for on-device AI in robotics and other devices, secured $150 million in Series C funding, bringing its valuation to $1.45 billion. This funding will support the company's efforts to provide energy-efficient, low-latency AI processing solutions that compete with cloud-dependent alternatives and high-cost GPUs.
AI assistant startup Instinct secured an additional $1 billion in Series C funding, bringing its valuation to $10 billion. This rapid fundraising reflects investor interest in consumer AI agents capable of performing tasks like booking travel, making purchases, and managing appointments.
Kontext Security launched publicly with $4 million in seed funding to provide a runtime security platform for AI agents. The platform offers visibility and control over AI agent actions by evaluating them against security policies in real time.
Island, a cybersecurity company, announced a $400 million Series F funding round, bringing its valuation to $6.4 billion. This funding will support the expansion of its platform, which provides an agentic control plane for governing human and automated workflows across various endpoints and networks.
Island, a browser security startup, secured $400 million in funding, valuing the company at $6.4 billion. This investment will support research and development, market expansion, and workforce growth, driven by increased demand for security tools against AI-driven threats.
Outerlimit, a New York-based startup, has secured $16 million in pre-seed funding to develop a decentralized security and authorization layer for autonomous agentic AI. The company aims to address the challenge of controlling AI agents that can act independently and potentially cause harm, a problem not solvable by traditional cybersecurity methods.
Baselayer, a startup specializing in business verification and fraud assessment for financial institutions, raised $35 million in Series A funding. The company will use the capital to extend its identity technology to verify AI agents, addressing the challenge of distinguishing legitimate AI activity from fraudulent bot behavior.
Comp AI, an AI-native compliance and security startup, raised $34 million in Series A funding, bringing its total funding to over $36 million. The company uses AI to automate governance, risk, and compliance (GRC) processes, and the new capital will expand its platform into continuous cybersecurity.
HelmGuard, a UK-based AI risk and compliance startup, raised $7.3 million in seed funding to expand its agentic governance, risk, and compliance (GRC) and security platform. The platform uses AI agents to automate risk management and assess risk signals from source systems, aiming to reduce assessment cycles to hours.
HiddenLayer, an AI security company, secured $100 million in Series B funding, bringing its total raised to over $155 million. The company will use the funds to expand its platform with agentic runtime security capabilities, focusing on AI coding agents.
HiddenLayer, an AI security startup, raised $100 million in Series B funding to expand its offerings for protecting AI models, agents, and workflows. This funding round reflects the growing market for AI security tools, with Gartner projecting significant spending increases in the sector.
Alice, an AI trust, safety, and security company, raised $140 million in a funding round, bringing its total funding to $280 million. This capital will be used to advance its AI platform, expand its intelligence dataset team, and scale go-to-market efforts, addressing emerging vulnerabilities and adversarial attacks in AI systems.
Mindgard, an AI security startup, secured $30 million in Series A funding, bringing its total raised to $42 million. This investment will be used to scale its product, engineering, sales, and marketing teams, accelerating deployments across various sectors.
Obsidian Security secured $85 million in Series D funding, bringing its total raised to over $200 million and valuing the company at $1.1 billion. The funding will be used to expand its agentic AI security offerings, which govern AI agents and SaaS applications to prevent privilege escalation and policy violations.
Onyx Security secured $113 million in Series B funding, bringing its total raised to $153 million, to develop its AI agent control platform for enterprises. This funding will be used to train proprietary models and scale go-to-market efforts, addressing the need for oversight and security of AI tools in corporate environments.