diff --git a/_INDEX.md b/_INDEX.md
index 28c8182..fc82e75 100644
--- a/_INDEX.md
+++ b/_INDEX.md
@@ -67,3 +67,4 @@
 | [Cache SSD write-back en fin de vie + backup USB urgence](common/ssd-cache-endurance-usb-backup.md) | 2026-07-04 | infra, ssd, cache, backup, usb, mcp-nas |
 | [Ports Registry NAS (source de verite etat des services)](common/ports-registry.md) | 2026-07-04 | infra, ports, registry, nas |
 | [Skill sobriete-code (7 regles Ponytail, hermes-tt + hermes-nyora)](common/sobriete-code-ponytail.md) | 2026-07-05 | dev, skill, code, tokens, couts, hermes-tt, hermes-nyora |
+| [Permissions credentials/cles - piege 777 et regle transverse (skill nas-ops)](common/permissions-credentials-cles-chmod.md) | 2026-07-05 | infra, securite, credentials, permissions, chmod |