Google DeepMind Features Hirundo’s Security-Hardened Gemma 4 Model – Outperforms LLMs 170x Its Size on Security

[#item_full_content]TEL AVIV, Israel–(BUSINESS WIRE)–Google DeepMind has featured Hirundo’s security-hardened variant of Gemma 4 in its Gemmaverse – the official showcase for the Gemma open-model ecosystem. The feature validates Hirundo’s weight-level machine unlearning approach as a production-grade solution to one of the most persistent vulnerabilities in enterprise AI deployments: prompt injection attacks. The hardened model is built on Google’s Gemma 4 E4B instruction-tuned base. At 4 billion parameters, it