Best AI Security Companies

Lakera focuses on security for generative artificial intelligence (GenAI) applications within the artificial intelligence (AI) security industry. The company has products that aim to protect AI applications from prompt attacks, prevent data loss, and comply with privacy regulations. It's solutions address security teams, product teams, and large language model (LLM) builders, offering resources related to threat detection and response. It was founded in 2021 and is based in San Francisco, California. In September 2025, Lakera was acquired by Check Point.

HiddenLayer specializes in providing security for artificial intelligence, operating within the cybersecurity and AI industries. The company offers a security platform that helps enterprises protect their machine learning models from adversarial attacks without adding complexity or requiring access to sensitive data. HiddenLayer's solutions are designed to safeguard proprietary AI models, prevent data exposure, and ensure the integrity of model performance. It was founded in 2022 and is based in Leander, Texas.

Patronus AI focuses on automated AI evaluation and security within the AI development sector. The company provides a platform that allows enterprise teams to score the performance of large language models (LLMs), generate adversarial test cases, and benchmark AI systems. Patronus AI serves sectors that require AI evaluation and security measures, including the tech and enterprise AI industries. Patronus AI was formerly known as Zeno AI. It was founded in 2023 and is based in Dublin, California.

Prompt Security provides security solutions for generative artificial intelligence (AI) across various sectors. The company offers a platform that addresses risks associated with Generative AI, including prompt injections, data leaks, and harmful content, through the inspection and regulation of GenAI tool usage. Prompt Security serves sectors that utilize Generative AI in their operations, with a focus on safeguarding applications and employees and maintaining governance. It was founded in 2023 and is based in New York, New York. In August 2025, Prompt Security was acquired by SentinelOne at a valuation between $250M and $300M.

Apex focuses on AI security, with an emphasis on the protection and enablement of generative AI technologies within organizations. The company provides a platform that offers visibility, detection, and remediation of AI-related risks. Apex serves sectors that require secure AI adoption, including regulated industries and large enterprises. It was founded in 2023 and is based in Tel Aviv, Israel.

Aporia provides AI security, reliability, and observability within the technology sector. The company offers guardrails for AI applications, including solutions for prompt injection detection, data leakage prevention, and customizable AI policies. Aporia's offerings are intended for enterprises looking to improve the security and reliability of their AI systems. It was founded in 2019 and is based in Tel Aviv, Israel. In December 2024, Aporia was acquired by Coralogix at a valuation of $50M.

Arthur focuses on artificial intelligence (AI) performance monitoring and management within the machine learning operations (MLOps) sector. It offers solutions for deploying, monitoring, and optimizing machine learning models, ensuring scalability, security, and compliance for enterprise use. Its products include tools for evaluating large language models (LLMs), providing a firewall for LLMs, and enhancing AI model observability. It was founded in 2018 and is based in New York, New York.

CalypsoAI focuses on artificial intelligence (AI) security and offers services related to the AI lifecycle, including model selection and deployment. The platform includes red-teaming, protection mechanisms, and oversight for AI applications and agents. CalypsoAI works with sectors that use AI-driven technology and aims to address associated risks. It was founded in 2018 and is based in Dublin, Ireland. In September 2025, CalypsoAI was acquired by F5 at a valuation of $180M.

Chainguard operates within the cybersecurity and software supply chain security sectors. The company offers hardened container images that aim to reduce vulnerabilities and integrate into security processes. Its solutions provide tools for vulnerability remediation, compliance, and risk mitigation, and the security of artificial intelligence and machine language workloads. It was founded in 2021 and is based in Kirkland, Washington.

Cranium focuses on AI security within the cybersecurity and artificial intelligence sectors. The company offers a platform that helps organizations secure their AI and machine learning systems, ensuring compliance and trustworthiness without disrupting existing workflows. Cranium primarily serves sectors that require stringent AI compliance and security measures, such as healthcare and finance. It was founded in 2022 and is based in Short Hills, New Jersey.

Enveil is a privacy-enhancing technology company that focuses on protecting data in use across various sectors. The company offers ZeroReveal solutions that enable secure data usage, collaboration, and monetization without compromising data privacy or security. Enveil's products are designed to allow organizations to extract insights and analyze data across boundaries and silos while maintaining the confidentiality and ownership of the underlying data. It was founded in 2016 and is based in Fulton, Maryland.

Lasso Security addresses interactions with generative artificial intelligence (AI) and large language model technologies. The company offers a generative artificial intelligence (GenAI) security platform that monitors GenAI interactions, detects risks, and helps organizations manage their GenAI activities. Lasso Security's solutions aim to comply with AI regulations and assist with risk and governance, including data breach prevention and security policy implementation. It was founded in 2023 and is based in Tel Aviv, Israel.

Protect AI provides artificial intelligence (AI) security solutions within the cybersecurity domain. The company offers products to secure AI applications throughout their lifecycle, from model selection and testing to runtime monitoring and protection. Protect AI serves sectors that require AI security measures, including tech companies and enterprises integrating AI into their operations. It was founded in 2022 and is based in Seattle, Washington. In April 2025, Protect AI was acquired by Palo Alto Networks.

Protecto provides privacy and data protection within the data security industry. The company offers services that use privacy engineering and artificial intelligence to automate the discovery of risks associated with enterprise data, enabling quick visibility into data usage and access. It was founded in 2021 and is based in Cupertino, California.

WitnessAI focuses on artificial intelligence (AI) security and governance within the enterprise software industry. The company offers a platform that provides monitoring, policy enforcement, and protection for AI applications in business environments. WitnessAI primarily serves sectors that require robust AI security and governance solutions. It was founded in 2023 and is based in Mountain View, California.