The rsync project, a widely-used open-source software for synchronizing files, has undergone significant changes with the help of an AI tool called Claude. The changes, totaling over 26,000 code modifications in two months, have raised concerns among users and developers about the potential impact on the software's reliability and stability. Some users have reported issues with the new versions of rsync, including data corruption and backup failures. The situation has sparked a debate about the use of AI in software development and maintenance.