Trend Micro's TrendAI has joined Nvidia as an inaugural partner in the Open Secure AI Alliance, a coalition focused on advancing open frontier AI models for cybersecurity defense. The alliance operates across four pillars: open models, open harnesses, open skills, and open research. A key argument is that defenders need the same access to frontier AI capabilities as attackers already have. The post highlights the importance of securing the AI 'harness' — the scaffolding around models — not just the models themselves, and introduces integrations like TrendAI Vision One governance policies within Nvidia's OpenShell runtime. The alliance also supports sovereign and private cloud deployments for regulated industries where data cannot leave controlled environments. TrendAI's Zero Day Initiative is cited as evidence that shared research accelerates vulnerability discovery and patching.