Claude Cowork Expands to Web and Mobile With Background AI Agent Workflows

Claude Cowork has been expanded beyond desktop to web and mobile, enabling persistent, cross-device AI task sessions, offline background execution, and human-in-the-loop approval checkpoints. The release notes highlight architectural changes (cross-device continuity, offline task execution, and pause-for-approval checkpoints) and calls out security considerations for organizations—credential exposure, task audit trails, and permission scoping—without describing any incident, exploit, or active compromise.