diff --git a/.github/workflows/python-ci.yml b/.github/workflows/python-ci.yml
index 536d0c3..de2b228 100644
--- a/.github/workflows/python-ci.yml
+++ b/.github/workflows/python-ci.yml
@@ -32,7 +32,7 @@ jobs:
     uses: notdodo/github-actions/.github/workflows/docker-build-and-push.yml@docker-build-and-push-v0
     with:
       image: digintlab/opencti-connector
-      platforms: linux/amd64, linux/arm64
+      platforms: linux/amd64
       egress-policy-allowlist: >
         deb.debian.org:443
         deb.debian.org:80
diff --git a/.gitignore b/.gitignore
index 9a043f6..7326edf 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,6 +1,7 @@
-config.yml
+__pycache__
+.cache
 .env
 .mypy_cache
 .ruff_cache
 .venv
-__pycache__
\ No newline at end of file
+config.yml
\ No newline at end of file
diff --git a/README.md b/README.md
index 2e24608..cca9346 100644
--- a/README.md
+++ b/README.md
@@ -59,6 +59,7 @@ All configuration values can be supplied via the `config.yml` file or through en
 | `dep.enable_site_indicator` | `DEP_ENABLE_SITE_INDICATOR` | `true`                                                    | Create a domain indicator per victim.                                               |
 | `dep.enable_hash_indicator` | `DEP_ENABLE_HASH_INDICATOR` | `true`                                                    | Create a hash indicator when a hash is provided.                                    |
 | `dep.skip_empty_victim`     | `DEP_SKIP_EMPTY_VICTIM`     | `true`                                                    | Skip items where victim is empty, `n/a`, or `none`.                                 |
+| `dep.create_sector_identities` | `DEP_CREATE_SECTOR_IDENTITIES` | `true`                                                | Create sector identities and link victims with a `part-of` relationship.            |
 
 ## Docker
 
@@ -86,6 +87,7 @@ docker run --rm \
 - The project uses [**uv**](https://docs.astral.sh/uv/) as the Python virtual environment and dependency management tool.
 - The connector stores `last_run` in OpenCTI worker state and fetches with an overlap (`DEP_OVERLAP_HOURS`) to catch delayed DEP changes. Delete the state in OpenCTI to force a full backfill window from `DEP_LOOKBACK_DAYS`.
 - Incidents are created with deterministic IDs derived from DEP `hashid`, and bundles are sent with `update=True`, so repeated records update existing incidents instead of creating duplicates.
+- Sector names are normalized before sector-identity generation to reduce duplicates caused by inconsistent casing or whitespace in DEP data.
 - The API occasionally URL-encodes announcement descriptions. The connector automatically decodes the description before sending it to OpenCTI.
 - Intrusion set creation is disabled by default because not every dataset represents a threat actor. If needed, adapt the logic in `DepConnector._process_item`.
 - To reload the connector code in the platform, run: `docker compose build dep-connector; docker compose up -d dep-connector; docker compose logs -f dep-connector`
diff --git a/config.yml.sample b/config.yml.sample
index 03f37c2..7f83967 100644
--- a/config.yml.sample
+++ b/config.yml.sample
@@ -29,3 +29,4 @@ dep:
   enable_site_indicator: true
   enable_hash_indicator: true
   skip_empty_victim: true
+  create_sector_identities: true
diff --git a/main.py b/main.py
index 35f305d..34a23ec 100644
--- a/main.py
+++ b/main.py
@@ -86,6 +86,14 @@ def indicator_domain(self) -> str | None:
             self.site
         )
 
+    @field_validator("sector")
+    @classmethod
+    def normalize_sector(cls, v: str | None) -> str | None:
+        if v is None:
+            return None
+        normalized = " ".join(v.split()).strip()
+        return normalized or None
+
 
 class DepConnector:
     def __init__(self) -> None:
@@ -185,6 +193,12 @@ def __init__(self) -> None:
             config,
             default=True,
         )
+        self.create_sector_identities = pycti.get_config_variable(
+            "DEP_CREATE_SECTOR_IDENTITIES",
+            ["dep", "create_sector_identities"],
+            config,
+            default=True,
+        )
 
     @staticmethod
     def _load_config() -> dict[str, Any]:
@@ -300,7 +314,7 @@ def _create_victim_identity(self, item: LeakRecord) -> stix2.Identity | None:
             )
 
         description_parts = []
-        if item.sector:
+        if item.sector and not self.create_sector_identities:
             description_parts.append(f"Industry sector: {item.sector}")
         if item.revenue:
             description_parts.append(f"Reported revenue: {item.revenue}")
@@ -317,6 +331,17 @@ def _create_victim_identity(self, item: LeakRecord) -> stix2.Identity | None:
             external_references=external_references or None,
         )
 
+    def _create_sector_identity(self, sector: str) -> stix2.Identity:
+        sector_key = sector.lower()
+        return stix2.Identity(
+            id=pycti.Identity.generate_id(sector_key, identity_class="class"),
+            name=sector,
+            identity_class="class",
+            created_by_ref=self.author_identity,
+            confidence=self.confidence,
+            labels=[self.label_value],
+        )
+
     def _create_incident(self, item: LeakRecord) -> stix2.Incident:
         victim_name = item.victim or item.victim_domain
         if not victim_name:
@@ -457,12 +482,22 @@ def _process_item(self, item: LeakRecord) -> None:
         if hash_indicator:
             indicators.append(hash_indicator)
 
+        sector_identity: stix2.Identity | None = None
+        sector = item.sector
+        if self.create_sector_identities and sector and victim:
+            sector_identity = self._create_sector_identity(sector)
+
         objects: list[stix2._STIXBase21] = [self.author_identity]
         if victim:
             objects.append(victim)
         objects.append(incident)
         if victim:
             objects.append(self._build_relationship("targets", incident.id, victim.id))
+        if sector_identity and victim:
+            objects.append(sector_identity)
+            objects.append(
+                self._build_relationship("part-of", victim.id, sector_identity.id)
+            )
         for indicator in indicators:
             objects.append(indicator)
             objects.append(