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Tantalum Security is an employee-owned cybersecurity company operating as Tantalum Labs LLC. It focuses on offensive operations such as red and purple teaming, penetration testing, social engineering, hardware and OT/ICS testing, and AI red teaming. The firm also offers active defense, AI security, strategic cyber advisory, and cyber due
diligence for investment firms. Its in-house enterprise platform centralizes pentest results, risk assessments, remediation workflows, retesting, and integrations through REST APIs, MCP, SSO, and connectors to tools like Jira, ServiceNow, and major cloud and security platforms. Tantalum Security serves regulated and high-risk sectors including healthcare, financial services, critical infrastructure, manufacturing, SaaS, and alternative assets.