The contest between AI-powered attack and defence has emerged as a key focus in the global cybersecurity industry, as hackers use AI to rapidly find gaps in IT systems and launch attacks while security firms deploy AI to identify flaws and build defences. Experts remain divided on which side has the advantage. Developments in AI coding tools and AI agents are lowering barriers for attackers, even as AI is also helping find and fix real bugs faster.

Fujitsu has launched a generative AI service that analyses legacy source code, including COBOL, and automatically produces design documents. The company said it aims to cut code understanding and documentation work from hours to minutes and reduce reliance on specialist staff. Fujitsu said it cut time needed to understand complex code by about 97 percent and improved document comprehensiveness and readability using enhanced retrieval linking large codebases via a knowledge graph.