"Too Dangerous to Release" — Or Just Too Expensive? The Real Reason Anthropic Is Hiding Its Most Powerful AI - Kingy AI

Last month, Anthropic made a remarkable announcement about its new model, Claude Mythos Preview: it was so good at finding security vulnerabilities in software that the company would not release it to the general public. Instead, it would only be available to a select group of companies to scan and fix their own software. The announcement requires context—but it contained an essential truth. While Anthropic’s model is really good at finding software vulnerabilities, so are other models. The UK’s AI Security Institute found that OpenAI’s GPT-5.5, already generally available, is comparable in capability. The company Aisle ...

In this issue: Defense in Depth, Medieval Style Human Trust of AI Agents Mythos and Cybersecurity Is "Satoshi Nakamoto" Really Adam Back? Mexican Surveillance Company ICE Uses Graphite Spyware FBI Extracts Deleted Signal Messages from iPhone Notification Database Hiding Bluetooth Trackers in Mail Medieval Encrypted Letter Decoded What Anthropic’s Mythos Means for the Future of Cybersecurity Claude Mythos Has Found 271 Zero-Days in Firefox Fast16 Malware A Ransomware Negotiator Was Working for a Ransomware Gang Hacking Polymarket DarkSword Malware Rowhammer Attack Against NVIDIA Chips Smart Glasses for the Authorities Insider Betting on Polymarket LLMs and Text-in-Text Steganography Copy.Fail Linux Vulnerability OpenAI’s GPT-5.5 is as Good as Mythos at Finding Security Vulnerabilities How Dangerous Is Anthropic’s Mythos AI? Upcoming Speaking Engagements

Last month, Anthropic made a remarkable announcement about its new model, Claude Mythos Preview: it was so good at finding security vulnerabilities in software that the company would not release it to the general public. Instead, it would only be available to a select group of companies to scan and fix their own software. The announcement requires context—but it contained an essential truth. While Anthropic’s model is really good at finding software vulnerabilities, so are other models. The UK’s AI Security Institute found that OpenAI’s GPT-5.5, already generally available, is comparable in capability. The company Aisle ...

The system’s power is comparable to others – but it still has frightening implications for the future of hacking

Two weeks ago, Anthropic announced that its new model, Claude Mythos Preview, can autonomously find and weaponize software vulnerabilities, turning them into working exploits without expert guidance. These were vulnerabilities in key software like operating systems and internet infrastructure that thousands of software developers working on those systems failed to find. This capability will have major security implications, compromising the devices and services we use every day. As a result, Anthropic is not releasing the model to the general public, but instead to a ...

The new reality rewards systems that can be tested and patched continuously