diff --git a/core/api_routers/source_groups.py b/core/api_routers/source_groups.py
index db1f5cb..489775c 100644
--- a/core/api_routers/source_groups.py
+++ b/core/api_routers/source_groups.py
@@ -1,13 +1,17 @@
+import logging
+
 from fastapi import APIRouter, Depends, HTTPException
 from sqlalchemy.orm import Session
 from typing import List, Optional, Any, Dict
 from pydantic import BaseModel
 from uuid import UUID
 
+from core.auth import get_current_user
 from core.db import get_db
 from core.db.models import SourceGroup
 
 router = APIRouter(prefix="/source_groups", tags=["source_groups"])
+logger = logging.getLogger(__name__)
 
 # Pydantic items
 class SourceGroupBase(BaseModel):
@@ -26,23 +30,51 @@ class SourceGroupRead(SourceGroupBase):
     class Config:
         orm_mode = True
 
+
+def require_source_group_write_access(current_user: Any = Depends(get_current_user)):
+    role = getattr(current_user, "role", None)
+    roles = getattr(current_user, "roles", None)
+
+    if isinstance(current_user, dict):
+        role = role or current_user.get("role")
+        roles = roles or current_user.get("roles")
+
+    if role in {"admin", "editor"}:
+        return current_user
+
+    if isinstance(roles, (list, set, tuple)) and any(r in {"admin", "editor"} for r in roles):
+        return current_user
+
+    raise HTTPException(status_code=403, detail="Insufficient permissions")
+
 @router.get("/", response_model=List[SourceGroupRead])
-def list_source_groups(db: Session = Depends(get_db)):
+def list_source_groups(
+    db: Session = Depends(get_db),
+    current_user: Any = Depends(get_current_user)
+):
     return db.query(SourceGroup).all()
 
 @router.get("/{group_id}", response_model=SourceGroupRead)
-def get_source_group(group_id: UUID, db: Session = Depends(get_db)):
+def get_source_group(
+    group_id: UUID,
+    db: Session = Depends(get_db),
+    current_user: Any = Depends(get_current_user)
+):
     sg = db.query(SourceGroup).filter(SourceGroup.id == group_id).first()
     if not sg:
         raise HTTPException(status_code=404, detail="SourceGroup not found")
     return sg
 
 @router.post("/", response_model=SourceGroupRead)
-def create_source_group(sg: SourceGroupCreate, db: Session = Depends(get_db)):
+def create_source_group(
+    sg: SourceGroupCreate,
+    db: Session = Depends(get_db),
+    current_user: Any = Depends(require_source_group_write_access)
+):
     existing = db.query(SourceGroup).filter(SourceGroup.slug == sg.slug).first()
     if existing:
         raise HTTPException(status_code=400, detail="SourceGroup with this slug already exists")
-    
+
     db_sg = SourceGroup(
         slug=sg.slug,
         description=sg.description,
@@ -51,17 +83,24 @@ def create_source_group(sg: SourceGroupCreate, db: Session = Depends(get_db)):
     db.add(db_sg)
     db.commit()
     db.refresh(db_sg)
+    logger.info("source_group_created", extra={"source_group_id": str(db_sg.id), "actor": str(getattr(current_user, "id", None) or current_user.get("id") if isinstance(current_user, dict) else None)})
     return db_sg
 
 @router.put("/{group_id}", response_model=SourceGroupRead)
-def update_source_group(group_id: UUID, sg: SourceGroupCreate, db: Session = Depends(get_db)):
+def update_source_group(
+    group_id: UUID,
+    sg: SourceGroupCreate,
+    db: Session = Depends(get_db),
+    current_user: Any = Depends(require_source_group_write_access)
+):
     db_sg = db.query(SourceGroup).filter(SourceGroup.id == group_id).first()
     if not db_sg:
         raise HTTPException(status_code=404, detail="SourceGroup not found")
-    
+
     db_sg.slug = sg.slug
     db_sg.description = sg.description
     db_sg.config = sg.config
     db.commit()
     db.refresh(db_sg)
+    logger.info("source_group_updated", extra={"source_group_id": str(db_sg.id), "actor": str(getattr(current_user, "id", None) or current_user.get("id") if isinstance(current_user, dict) else None)})
     return db_sg