In a striking move, dozens of cybersecurity veterans have penned a letter to the US government, expressing serious concerns over the recent export-control ban on Anthropic's powerful AI models, Fable and Mythos. The experts contend that this prohibition is counterproductive, potentially weakening the global cybersecurity landscape. Their argument centers on the idea that these advanced AI tools are crucial for defense. By restricting access, the US risks limiting the capabilities of cybersecurity defenders worldwide who rely on cutting-edge technology to identify vulnerabilities, develop robust security measures, and protect software and products from increasingly sophisticated threats. The letter highlights a critical paradox: while the government aims to control the spread of powerful AI, the ban may inadvertently leave critical digital infrastructure more exposed. The cybersecurity community is calling for a re-evaluation, emphasizing that collaborative development and access to advanced AI are vital for staying ahead in the perpetual arms race against cyber adversaries.