Tenet open-sources agent-jackstop, hardening Cursor and Claude Code against Agentjacking

Tenet Security open-sourced agent-jackstop, providing hardened configurations for coding agents, aimed at reducing the risk of prompt injection from untrusted tool outputs. The project emphasizes runtime protections such as network egress control, sensitive data access restrictions, and execution approval. The related protective effects are the project's claims; the release of a configuration alone cannot be regarded as having obtained independent security assurance.