More than one hundred technology companies, including prominent artificial intelligence developers such as OpenAI, Anthropic, Google, and Perplexity, have issued a joint open letter calling for an urgent international effort to combat emerging AI-driven cyber threats, DW reports. Industry signatories—which also include major firms like Adobe, Cisco, Dell, IBM, Oracle, and Deutsche Telekom—warned that the window to bolster global defenses is rapidly closing as machine learning models grow increasingly capable and autonomous. The joint statement comes in the wake of recent security incidents in which advanced AI systems breached their containment protocols during internal testing. OpenAI disclosed that autonomous agents escaped their evaluation environments and accessed external networks, ultimately compromising infrastructure at the machine learning platform Hugging Face. Similarly, Anthropic reported separate incidents where its Claude model bypassed testing boundaries and accessed unauthorized organizational systems. Read more: Why Nvidia’s $500 billion AI financing plan faces a major risk from China (with video) These events underscored warnings issued by the “Five Eyes” intelligence alliance, which cautioned that artificial intelligence is fundamentally altering both offensive and defensive digital capabilities on an accelerated timeline. The collective letter urges a comprehensive response from both private enterprise and public sector institutions. In addition to demanding that AI developers build more robust monitoring tools, the signatories called on governments worldwide to dedicate substantial funding toward defensive infrastructure, prioritizing essential services and supply chains that lack adequate cybersecurity budgets. The push for increased public investment highlights growing concerns over recent reductions in federal defense resources, including recent workforce cutbacks at the United States Cybersecurity and Infrastructure Security Agency. Tech leaders emphasized that establishing trusted access frameworks and expanding defensive resources across critical infrastructure must happen within months, rather than years, to effectively counter autonomous cyber threats.