Cybersecurity leaders at major U.S. firms including Nvidia and Adobe have asked the Trump administration to lift restrictions on Anthropic's most powerful AI ‌models, arguing that the bans hamper efforts to prevent the spread of digital ‌attacks. The letter follows Washington's decision on Friday ordering Anthropic to suspend access to its Fable 5 and Mythos 5 ​models for any foreign nationals over national security concerns. The curbs that Washington has now placed on ‌the technology will limit the cybersecurity ⁠industry's ability to find and fix software flaws at a time when other AI tools are making it easier for hackers to exploit vulnerabilities, ⁠according to a letter on Sunday signed by more than 50 security leaders.