Defense in depth
Named by 5 kept items in this workspace.
The items that name it 5
Layers access policy, WAF inspection and origin restrictions so no single software flaw leads to a critical compromise
Layered controls limiting what an attacker can do when not every vulnerability is patched in time
Layering controls and assuming some will fail; Anthropic said it built Fable 5 to make jailbreaks narrow or expensive to produce, combined with monitoring to detect and shut down successful attacks
Agent code runs in a V8 isolate with no direct host access; only egress is via semantically meaningful, policy-checked MCP tool calls
In every workspace you can read 7
Security
All techniques in this workspace.