FIS has expanded its partnership with Anthropic by joining Project Glasswing, an initiative that uses advanced artificial intelligence models to identify and address potential vulnerabilities in software supporting critical infrastructure. Through the initiative, FIS is testing Mythos 5, Anthropic’s most advanced AI model, as an additional component of its internal cybersecurity program. The company is using the model to scan and evaluate its systems for security weaknesses that could affect financial institutions and businesses relying on its technology. Project Glasswing is a controlled-access program for organizations that develop or maintain foundational software. Participants use Anthropic’s frontier AI models for defensive security work, including reviewing complex codebases and identifying vulnerabilities that may be difficult to detect through conventional methods. FIS operates technology that supports core banking, payment processing and money movement for thousands of institutions worldwide. Mythos 5 will function as an additional layer within FIS’ broader security program rather than replacing existing cybersecurity teams, controls or testing processes. FIS’ participation in Project Glasswing is separate from its commercial AI partnership with Anthropic, which involves the use of Anthropic-powered AI agents within financial services products. The Project Glasswing collaboration is focused on defensive cybersecurity and strengthening the software infrastructure operated by FIS.