Mythos Model

• Singapore's Monetary Authority (MAS) met with chief executives of major financial institutions to discuss AI-related cyber threats, prompted by Anthropic's limited release of its Mythos model. • The Cyber Security Agency of Singapore issued a letter urging critical information infrastructure owners to commission board-level reviews of their cyber-risk posture in response to emerging AI security concerns. • The coordinated regulatory response underscores Singapore's proactive stance on managing AI-driven cybersecurity risks in the financial sector and critical infrastructure.

• Anthropic's Mythos AI model, which the company deemed too dangerous for public release, has reportedly been accessed by an unauthorized third party in a significant security breach. • The incident has raised global concerns about AI safety and the security protocols surrounding advanced AI systems, particularly models flagged as high-risk by their developers. • The breach underscores ongoing tensions between AI safety considerations and cybersecurity vulnerabilities in the management of cutting-edge language models.

• US Treasury Secretary Scott Bessent and Federal Reserve Chair Jerome Powell convened Wall Street leaders on April 7 to warn about Anthropic's new Mythos AI model, which can identify software vulnerabilities that have evaded decades of human review and millions of automated security tests. • Mythos is being released only to carefully selected partners for defensive security work, as Anthropic fears the tool could provide ransomware gangs and hostile governments with powerful weapons to steal data or disrupt critical infrastructure. • The model represents a significant leap in AI cybersecurity capabilities, with the potential to both protect systems through accelerated penetration testing and pose risks if misused by malicious actors.