Phoenix Security has launched Blue Shield, a behavioural supply chain firewall that blocks malicious packages and AI agent skills at the point of install — across the developer workstation, CI/CD pipeline, and agent session. Built on the Phoenix Blue intelligence backbone, which has tracked 59 campaigns and 657 malicious package versions since June 2024 with zero CVEs assigned during active exploitation, Blue Shield’s free core tier is open today at phxintel.security