diff --git a/backend/alembic/versions/b052_add_containment_result.py b/backend/alembic/versions/b052_add_containment_result.py
new file mode 100644
index 0000000..89ac866
--- /dev/null
+++ b/backend/alembic/versions/b052_add_containment_result.py
@@ -0,0 +1,31 @@
+"""Add containment_result to tests.
+
+Revision ID: b052
+Revises: b051
+Create Date: 2026-06-24
+"""
+from alembic import op
+import sqlalchemy as sa
+
+revision = "b052"
+down_revision = "b051"
+branch_labels = None
+depends_on = None
+
+containment_enum = sa.Enum(
+    "contained", "partially_contained", "not_contained",
+    name="containmentresult",
+)
+
+
+def upgrade() -> None:
+    containment_enum.create(op.get_bind(), checkfirst=True)
+    op.add_column(
+        "tests",
+        sa.Column("containment_result", containment_enum, nullable=True),
+    )
+
+
+def downgrade() -> None:
+    op.drop_column("tests", "containment_result")
+    containment_enum.drop(op.get_bind(), checkfirst=True)
diff --git a/backend/app/domain/enums.py b/backend/app/domain/enums.py
index 6161db8..b1b3782 100644
--- a/backend/app/domain/enums.py
+++ b/backend/app/domain/enums.py
@@ -68,6 +68,15 @@ class TestResult(str, enum.Enum):
     partially_detected = "partially_detected"
 
 
+# Define class ContainmentResult
+class ContainmentResult(str, enum.Enum):
+    """Outcome of the blue team's containment effort."""
+
+    contained = "contained"
+    partially_contained = "partially_contained"
+    not_contained = "not_contained"
+
+
 # Define class DataClassification
 class DataClassification(str, enum.Enum):
     """Data sensitivity classification levels for compliance and retention policies."""
diff --git a/backend/app/models/enums.py b/backend/app/models/enums.py
index 909110d..fd302ce 100644
--- a/backend/app/models/enums.py
+++ b/backend/app/models/enums.py
@@ -7,6 +7,7 @@ working with ``from app.models.enums import ...``.
 
 # Import # noqa: F401 from app.domain.enums
 from app.domain.enums import (  # noqa: F401
+    ContainmentResult,
     DataClassification,
     TeamSide,
     TechniqueStatus,
diff --git a/backend/app/models/test.py b/backend/app/models/test.py
index 77f65cd..928ba29 100644
--- a/backend/app/models/test.py
+++ b/backend/app/models/test.py
@@ -26,8 +26,8 @@ from sqlalchemy.orm import relationship
 # Import Base from app.database
 from app.database import Base
 
-# Import TestResult, TestState from app.models.enums
-from app.models.enums import TestResult, TestState
+# Import ContainmentResult, TestResult, TestState from app.models.enums
+from app.models.enums import ContainmentResult, TestResult, TestState
 
 
 # Define class Test
@@ -83,6 +83,7 @@ class Test(Base):
     blue_summary = Column(Text, nullable=True)
     # Assign detection_result = Column(Enum(TestResult, name="testresult"), nullable=True)
     detection_result = Column(Enum(TestResult, name="testresult"), nullable=True)
+    containment_result = Column(Enum(ContainmentResult, name="containmentresult"), nullable=True)
     # Assign blue_validated_by = Column(UUID(as_uuid=True), ForeignKey("users.id"), nullable=True)
     blue_validated_by = Column(UUID(as_uuid=True), ForeignKey("users.id"), nullable=True)
     # Assign blue_validated_at = Column(DateTime, nullable=True)
diff --git a/backend/app/schemas/test.py b/backend/app/schemas/test.py
index 3e030b1..e3bd95d 100644
--- a/backend/app/schemas/test.py
+++ b/backend/app/schemas/test.py
@@ -9,7 +9,7 @@ from datetime import datetime
 from pydantic import BaseModel, ConfigDict, model_validator
 
 # Import DataClassification from app.domain.enums
-from app.domain.enums import DataClassification
+from app.domain.enums import ContainmentResult, DataClassification
 from app.models.enums import TestResult, TestState
 from app.schemas.evidence import EvidenceOut
 
@@ -92,6 +92,7 @@ class TestBlueUpdate(BaseModel):
 
     # Assign detection_result = None
     detection_result: TestResult | None = None
+    containment_result: ContainmentResult | None = None
     # Assign blue_summary = None
     blue_summary: str | None = None
 
@@ -207,6 +208,7 @@ class TestOut(BaseModel):
     blue_summary: str | None = None
     # Assign detection_result = None
     detection_result: TestResult | None = None
+    containment_result: ContainmentResult | None = None
     # Assign blue_validated_by = None
     blue_validated_by: uuid.UUID | None = None
     # Assign blue_validated_at = None
diff --git a/frontend/src/api/tests.ts b/frontend/src/api/tests.ts
index 8eff4b9..ad8db99 100644
--- a/frontend/src/api/tests.ts
+++ b/frontend/src/api/tests.ts
@@ -2,6 +2,7 @@ import client from "./client";
 import type {
   Test,
   TestResult,
+  ContainmentResult,
   TestState,
   TestTimelineEntry,
 } from "../types/models";
@@ -37,6 +38,7 @@ export interface RedUpdatePayload {
 
 export interface BlueUpdatePayload {
   detection_result?: TestResult;
+  containment_result?: ContainmentResult;
   blue_summary?: string;
 }
 
diff --git a/frontend/src/components/test-detail/TeamTabs.tsx b/frontend/src/components/test-detail/TeamTabs.tsx
index ca2b4f6..8e8a665 100644
--- a/frontend/src/components/test-detail/TeamTabs.tsx
+++ b/frontend/src/components/test-detail/TeamTabs.tsx
@@ -17,6 +17,7 @@ import {
 import type {
   Test,
   TestResult,
+  ContainmentResult,
   TeamSide,
   Evidence,
   TestTimelineEntry,
@@ -59,6 +60,14 @@ const DETECTION_RESULTS: { value: TestResult; label: string; color: string }[] =
   },
 ];
 
+// ── Containment result options ─────────────────────────────────────
+
+const CONTAINMENT_RESULTS: { value: ContainmentResult; label: string; color: string }[] = [
+  { value: "contained", label: "Contained", color: "border-green-500 bg-green-500/10 text-green-400" },
+  { value: "partially_contained", label: "Partially Contained", color: "border-yellow-500 bg-yellow-500/10 text-yellow-400" },
+  { value: "not_contained", label: "Not Contained", color: "border-red-500 bg-red-500/10 text-red-400" },
+];
+
 // ── Props ──────────────────────────────────────────────────────────
 
 interface TeamTabsProps {
@@ -80,6 +89,7 @@ interface TeamTabsProps {
   onBlueFieldChange: (field: string, value: string) => void;
   blueDraft: {
     detection_result: TestResult | "";
+    containment_result: ContainmentResult | "";
     blue_summary: string;
   };
 
@@ -339,6 +349,53 @@ export default function TeamTabs({
         )}
       </div>
 
+      {/* Containment Result */}
+      <div>
+        <label className="mb-2 block text-sm font-medium text-gray-300">
+          Containment Result
+        </label>
+        {canEditBlue ? (
+          <div className={`flex flex-wrap gap-2 ${blueDraft.detection_result === "not_detected" ? "opacity-40 pointer-events-none" : ""}`}>
+            {CONTAINMENT_RESULTS.map((opt) => (
+              <button
+                key={opt.value}
+                onClick={() => onBlueFieldChange("containment_result", opt.value)}
+                className={`rounded-lg border px-3 py-2 text-sm font-medium transition-colors ${
+                  blueDraft.containment_result === opt.value
+                    ? opt.color
+                    : "border-gray-700 bg-gray-800 text-gray-400 hover:border-gray-600"
+                }`}
+              >
+                {opt.label}
+              </button>
+            ))}
+            {blueDraft.detection_result === "not_detected" && (
+              <span className="self-center text-xs text-gray-500">N/A — attack not detected</span>
+            )}
+          </div>
+        ) : (
+          <p className="text-sm">
+            {test.containment_result ? (
+              <span
+                className={`inline-flex rounded-full border px-2.5 py-0.5 text-xs font-medium ${
+                  test.containment_result === "contained"
+                    ? "border-green-500/30 bg-green-900/50 text-green-400"
+                    : test.containment_result === "not_contained"
+                      ? "border-red-500/30 bg-red-900/50 text-red-400"
+                      : "border-yellow-500/30 bg-yellow-900/50 text-yellow-400"
+                }`}
+              >
+                {test.containment_result.replace(/_/g, " ")}
+              </span>
+            ) : test.detection_result === "not_detected" ? (
+              <span className="text-gray-500">N/A</span>
+            ) : (
+              <span className="text-gray-500">Not evaluated yet</span>
+            )}
+          </p>
+        )}
+      </div>
+
       {/* Blue Summary */}
       <div>
         <label className="mb-1.5 block text-sm font-medium text-gray-300">
diff --git a/frontend/src/pages/TestDetailPage.tsx b/frontend/src/pages/TestDetailPage.tsx
index b46e045..1e116e0 100644
--- a/frontend/src/pages/TestDetailPage.tsx
+++ b/frontend/src/pages/TestDetailPage.tsx
@@ -24,7 +24,7 @@ import {
 } from "../api/tests";
 import { uploadEvidence, getEvidence } from "../api/evidence";
 import { useAuth } from "../context/AuthContext";
-import type { TestResult, TeamSide, TestTimelineEntry } from "../types/models";
+import type { TestResult, ContainmentResult, TeamSide, TestTimelineEntry } from "../types/models";
 
 import TestDetailHeader from "../components/test-detail/TestDetailHeader";
 import TeamTabs from "../components/test-detail/TeamTabs";
@@ -62,9 +62,11 @@ export default function TestDetailPage() {
 
   const [blueDraft, setBlueDraft] = useState<{
     detection_result: TestResult | "";
+    containment_result: ContainmentResult | "";
     blue_summary: string;
   }>({
     detection_result: "",
+    containment_result: "",
     blue_summary: "",
   });
 
@@ -109,6 +111,7 @@ export default function TestDetailPage() {
       });
       setBlueDraft({
         detection_result: test.detection_result || "",
+        containment_result: test.containment_result || "",
         blue_summary: test.blue_summary || "",
       });
     }
@@ -161,6 +164,7 @@ export default function TestDetailPage() {
     mutationFn: () =>
       updateTestBlue(testId!, {
         detection_result: (blueDraft.detection_result as TestResult) || undefined,
+        containment_result: (blueDraft.containment_result as ContainmentResult) || undefined,
         blue_summary: blueDraft.blue_summary || undefined,
       }),
     onSuccess: () => {
diff --git a/frontend/src/types/models.ts b/frontend/src/types/models.ts
index 595b77f..a6f5992 100644
--- a/frontend/src/types/models.ts
+++ b/frontend/src/types/models.ts
@@ -56,6 +56,8 @@ export type TestState =
 
 export type TestResult = "detected" | "not_detected" | "partially_detected";
 
+export type ContainmentResult = "contained" | "partially_contained" | "not_contained";
+
 export type ValidationStatus = "pending" | "approved" | "rejected";
 
 export type TeamSide = "red" | "blue";
@@ -92,6 +94,7 @@ export interface Test {
   // Blue Team fields
   blue_summary: string | null;
   detection_result: TestResult | null;
+  containment_result: ContainmentResult | null;
   blue_validated_by: string | null;
   blue_validated_at: string | null;
   blue_validation_status: ValidationStatus | null;