Senator Elizabeth Warren, Ranking Member of the U.S. Senate Committee on Banking, Housing and Urban Affairs, published a letter to Treasury Secretary Scott Bessent urging the Trump Administration to strengthen the financial sector's cybersecurity resilience and reverse what she described as a deregulatory approach to cyber oversight. The letter argues that emerging AI systems, including Anthropic's Claude Mythos, could significantly improve attackers' ability to identify and exploit software vulnerabilities, increasing the risk of breaches of sensitive financial data and broader destabilizing cyberattacks. Warren called for stronger rules on bank supervision, vulnerability identification and remediation, third party vendor oversight, and threat information sharing. The letter cites 2025 data showing that financial services institutions suffered the most data breaches of any industry for the second consecutive year, and argues that cuts to government cyber resources, including technologist layoffs and a reduction of the Cybersecurity and Infrastructure Security Agency workforce by almost one-third in 2025, have weakened defenses. She asked Treasury to respond by June 16, 2026 to support her oversight and legislative work on the banking system.
U.S. Senate Committee on Banking, Housing and Urban Affairs2026-06-04
U.S. Senate Committee on Banking, Housing and Urban Affairs Ranking Member Elizabeth Warren urges Treasury to strengthen financial sector cybersecurity over Mythos-class AI threats
Senator Elizabeth Warren, Ranking Member of the Senate Banking Committee, sent a letter urging Treasury Secretary Scott Bessent to strengthen financial sector cybersecurity and reverse what she called a deregulatory approach. She warned that emerging AI systems, including Anthropic’s Claude Mythos, could help attackers exploit vulnerabilities, and called for stronger rules on bank supervision, vendor oversight, and threat information sharing, citing rising data breaches and cuts to government cyber resources.