diff --git a/x-pack/plugins/security_solution/public/common/components/event_details/__mocks__/index.ts b/x-pack/plugins/security_solution/public/common/components/event_details/__mocks__/index.ts
index a6e1a9875bd62..4183f12eec72a 100644
--- a/x-pack/plugins/security_solution/public/common/components/event_details/__mocks__/index.ts
+++ b/x-pack/plugins/security_solution/public/common/components/event_details/__mocks__/index.ts
@@ -477,6 +477,12 @@ export const mockAlertDetailsData = [
     values: ['2020-11-25T15:36:40.924914552Z'],
     originalValue: '2020-11-25T15:36:40.924914552Z',
   },
+  {
+    category: 'kibana',
+    field: 'kibana.alert.original_event.id',
+    values: ['f7bc2422-cb1e-4427-ba33-6f496ee8360c'],
+    originalValue: 'f7bc2422-cb1e-4427-ba33-6f496ee8360c',
+  },
   {
     category: 'kibana',
     field: 'kibana.alert.original_event.code',
diff --git a/x-pack/plugins/security_solution/public/common/components/event_details/alert_summary_view.test.tsx b/x-pack/plugins/security_solution/public/common/components/event_details/alert_summary_view.test.tsx
index 53c0d143600fb..650b915f50214 100644
--- a/x-pack/plugins/security_solution/public/common/components/event_details/alert_summary_view.test.tsx
+++ b/x-pack/plugins/security_solution/public/common/components/event_details/alert_summary_view.test.tsx
@@ -68,7 +68,7 @@ describe('AlertSummaryView', () => {
       </TestProviders>
     );
 
-    ['host.name', 'user.name', 'Rule type', 'query'].forEach((fieldId) => {
+    ['host.name', 'user.name', 'Rule type', 'query', 'Source event id'].forEach((fieldId) => {
       expect(getByText(fieldId));
     });
   });
diff --git a/x-pack/plugins/security_solution/public/common/components/event_details/get_alert_summary_rows.tsx b/x-pack/plugins/security_solution/public/common/components/event_details/get_alert_summary_rows.tsx
index 0527acfef1f9a..8d2de0439967c 100644
--- a/x-pack/plugins/security_solution/public/common/components/event_details/get_alert_summary_rows.tsx
+++ b/x-pack/plugins/security_solution/public/common/components/event_details/get_alert_summary_rows.tsx
@@ -37,6 +37,7 @@ const alwaysDisplayedFields: EventSummaryField[] = [
   { id: 'agent.id', overrideField: AGENT_STATUS_FIELD_NAME, label: i18n.AGENT_STATUS },
   { id: 'user.name' },
   { id: ALERT_RULE_TYPE, label: i18n.RULE_TYPE },
+  { id: 'kibana.alert.original_event.id', label: i18n.SOURCE_EVENT_ID },
 ];
 
 /**
diff --git a/x-pack/plugins/security_solution/public/common/components/event_details/summary_view.tsx b/x-pack/plugins/security_solution/public/common/components/event_details/summary_view.tsx
index 451ffd64584a7..78cb55166555d 100644
--- a/x-pack/plugins/security_solution/public/common/components/event_details/summary_view.tsx
+++ b/x-pack/plugins/security_solution/public/common/components/event_details/summary_view.tsx
@@ -47,7 +47,7 @@ const summaryColumns: Array<EuiBasicTableColumn<AlertSummaryRow>> = [
         <EuiIconTip
           type="iInCircle"
           color="subdued"
-          title="Alert Prevalence"
+          title={i18n.HIGHLIGHTED_FIELDS_ALERT_PREVALENCE}
           content={<span>{i18n.HIGHLIGHTED_FIELDS_ALERT_PREVALENCE_TOOLTIP}</span>}
         />
       </>
diff --git a/x-pack/plugins/security_solution/public/common/components/event_details/table/prevalence_cell.test.tsx b/x-pack/plugins/security_solution/public/common/components/event_details/table/prevalence_cell.test.tsx
index 83b4c63484dd3..6a0e6bf4e6b9d 100644
--- a/x-pack/plugins/security_solution/public/common/components/event_details/table/prevalence_cell.test.tsx
+++ b/x-pack/plugins/security_solution/public/common/components/event_details/table/prevalence_cell.test.tsx
@@ -15,6 +15,7 @@ import { EventFieldsData } from '../types';
 import { TimelineId } from '../../../../../common/types';
 import { AlertSummaryRow } from '../helpers';
 import { useAlertPrevalence } from '../../../containers/alerts/use_alert_prevalence';
+import { getEmptyValue } from '../../../components/empty_value';
 
 jest.mock('../../../lib/kibana');
 jest.mock('../../../containers/alerts/use_alert_prevalence', () => ({
@@ -75,10 +76,10 @@ describe('PrevalenceCellRenderer', () => {
   });
 
   describe('When an error was returned', () => {
-    test('it should return null', async () => {
+    test('it should return empty value placeholder', async () => {
       mockUseAlertPrevalence.mockImplementation(() => ({
         loading: false,
-        count: 123,
+        count: undefined,
         error: true,
       }));
       const { container } = render(
@@ -88,6 +89,7 @@ describe('PrevalenceCellRenderer', () => {
       );
       expect(container.getElementsByClassName('euiLoadingSpinner')).toHaveLength(0);
       expect(screen.queryByText('123')).toBeNull();
+      expect(screen.queryByText(getEmptyValue())).toBeTruthy();
     });
   });
 
diff --git a/x-pack/plugins/security_solution/public/common/components/event_details/table/prevalence_cell.tsx b/x-pack/plugins/security_solution/public/common/components/event_details/table/prevalence_cell.tsx
index ed8b610b39d1f..46de86d4bff1b 100644
--- a/x-pack/plugins/security_solution/public/common/components/event_details/table/prevalence_cell.tsx
+++ b/x-pack/plugins/security_solution/public/common/components/event_details/table/prevalence_cell.tsx
@@ -9,11 +9,12 @@ import React from 'react';
 import { EuiLoadingSpinner } from '@elastic/eui';
 
 import { AlertSummaryRow } from '../helpers';
+import { defaultToEmptyTag } from '../../../components/empty_value';
 import { useAlertPrevalence } from '../../../containers/alerts/use_alert_prevalence';
 
 const PrevalenceCell = React.memo<AlertSummaryRow['description']>(
   ({ data, values, timelineId }) => {
-    const { loading, count, error } = useAlertPrevalence({
+    const { loading, count } = useAlertPrevalence({
       field: data.field,
       timelineId,
       value: values,
@@ -22,11 +23,9 @@ const PrevalenceCell = React.memo<AlertSummaryRow['description']>(
 
     if (loading) {
       return <EuiLoadingSpinner />;
-    } else if (error) {
-      return null;
+    } else {
+      return defaultToEmptyTag(count);
     }
-
-    return <>{count}</>;
   }
 );
 
diff --git a/x-pack/plugins/security_solution/public/common/components/event_details/translations.ts b/x-pack/plugins/security_solution/public/common/components/event_details/translations.ts
index 52f73e9de481a..6e32beb7da02a 100644
--- a/x-pack/plugins/security_solution/public/common/components/event_details/translations.ts
+++ b/x-pack/plugins/security_solution/public/common/components/event_details/translations.ts
@@ -46,7 +46,7 @@ export const HIGHLIGHTED_FIELDS_VALUE = i18n.translate(
 export const HIGHLIGHTED_FIELDS_ALERT_PREVALENCE = i18n.translate(
   'xpack.securitySolution.alertDetails.overview.highlightedFields.alertPrevalence',
   {
-    defaultMessage: 'Alert Prevalence',
+    defaultMessage: 'Alert prevalence',
   }
 );
 
@@ -117,6 +117,13 @@ export const RULE_TYPE = i18n.translate('xpack.securitySolution.detections.alert
   defaultMessage: 'Rule type',
 });
 
+export const SOURCE_EVENT_ID = i18n.translate(
+  'xpack.securitySolution.detections.alerts.sourceEventId',
+  {
+    defaultMessage: 'Source event id',
+  }
+);
+
 export const MULTI_FIELD_TOOLTIP = i18n.translate(
   'xpack.securitySolution.eventDetails.multiFieldTooltipContent',
   {