diff --git a/.changeset/olive-boxes-hide.md b/.changeset/olive-boxes-hide.md
index beee360eab..878dc8394a 100644
--- a/.changeset/olive-boxes-hide.md
+++ b/.changeset/olive-boxes-hide.md
@@ -7,7 +7,7 @@
 '@backstage/plugin-scaffolder-node': minor
 ---
 
-feat: add auditor to coreServices
+feat: add auditor to `coreServices`
 
 This change introduces a new `auditor` service to the `coreServices` in Backstage.
 The auditor service enables plugins to emit audit events for security-relevant actions.
diff --git a/packages/backend-defaults/config.d.ts b/packages/backend-defaults/config.d.ts
index 8d36d55ef2..baf0bde2e6 100644
--- a/packages/backend-defaults/config.d.ts
+++ b/packages/backend-defaults/config.d.ts
@@ -635,13 +635,11 @@ export interface Config {
     auditor?: {
       /**
        * Configuration for the auditing to the console
-       * @visibility frontend
        */
       console: {
         /**
          * Enables auditing to console
          * @default true
-         * @visibility frontend
          */
         enabled: boolean;
       };
diff --git a/packages/backend-plugin-api/src/services/definitions/AuditorService.ts b/packages/backend-plugin-api/src/services/definitions/AuditorService.ts
index 3bf47e6d61..e678196847 100644
--- a/packages/backend-plugin-api/src/services/definitions/AuditorService.ts
+++ b/packages/backend-plugin-api/src/services/definitions/AuditorService.ts
@@ -18,8 +18,6 @@ import type { JsonObject } from '@backstage/types';
 import type { Request } from 'express';
 
 /**
- * TODO: Rigorously define each level
- *
  * low (default): normal usage
  * medium: accessing write endpoints
  * high: non-root permission changes
@@ -31,12 +29,20 @@ export type AuditorEventSeverityLevel = 'low' | 'medium' | 'high' | 'critical';
 /** @public */
 export type AuditorCreateEvent<TRootMeta extends JsonObject> = (options: {
   /**
-   * Use kebab-case to name audit events (e.g., "user-login", "file-download").
+   * Use kebab-case to name audit events (e.g., "user-login", "file-download", "fetch"). Represents a logical group of similar events or operations. For example, "fetch" could be used as an eventId encompassing various fetch methods like "by-id" or "by-location".
    *
    * The `pluginId` already provides plugin/module context, so avoid redundant prefixes in the `eventId`.
    */
   eventId: string;
 
+  /**
+   * Use kebab-case to name sub-events (e.g., "by-id", "by-user").
+   *
+   * (Optional) The ID for a sub-event or related action within the main event.  This allows further categorization of events within a logical group. For example, if the `eventId` is "fetch", the `subEventId` could be "by-id" or "by-location" to specify the method used for fetching.
+   */
+  subEventId?: string;
+
+  /** (Optional) The severity level for the audit event. */
   severityLevel?: AuditorEventSeverityLevel;
 
   /** (Optional) The associated HTTP request, if applicable. */
diff --git a/plugins/catalog-backend/README.md b/plugins/catalog-backend/README.md
index 0ca779f782..6a1972ef17 100644
--- a/plugins/catalog-backend/README.md
+++ b/plugins/catalog-backend/README.md
@@ -89,22 +89,42 @@ some example entities.
 
 ## Audit Events
 
-- **`ancestry-fetch`**: Tracks `GET` requests to the `/entities/by-name/:kind/:namespace/:name/ancestry` endpoint which return the ancestry of an entity.
-- **`batch-fetch`**: Tracks `POST` requests to the `/entities/by-refs` endpoint which return a batch of entities.
-- **`delete`**: Tracks `DELETE` requests to the `/entities/by-uid/:uid` endpoint which delete an entity. Note: this will not be a permanent deletion and the entity will be restored if the parent location is still present in the catalog.
-- **`facet-fetch`**: Tracks `GET` requests to the `/entity-facets` endpoint which return the facets of an entity.
-- **`fetch`**: Tracks `GET` requests to the `/entities` endpoint which returns a list of entities.
-- **`fetch-by-name`**: Tracks `GET` requests to the `/entities/by-name/:kind/:namespace/:name` endpoint which return an entity matching the specified entity ref.
-- **`fetch-by-uid`**: Tracks `GET` requests to the `/entities/by-uid/:uid` endpoint which return an entity matching the specified entity uid.
-- **`fetch-by-query`**: Tracks `GET` requests to the `/entities/by-query` endpoint which returns a list of entities matching the specified query.
-- **`refresh`**: Tracks `POST` requests to the `/entities/refresh` endpoint which schedules the specified entity to be refreshed.
-- **`validate`**: Tracks `POST` requests to the `/entities/validate` endpoint which validates the specified entity.
-- **`location-analyze`**: Tracks `POST` requests to the `/locations/analyze` endpoint which analyzes the specified location.
-- **`location-create`**: Tracks `POST` requests to the `/locations` endpoint which creates a location.
-- **`location-delete`**: Tracks `DELETE` requests to the `/locations/:id` endpoint which deletes a location as well as all child entities associated with it.
-- **`location-fetch`**: Tracks `GET` requests to the `/locations` endpoint which returns a list of locations.
-- **`location-fetch-by-entity-ref`**: Tracks `GET` requests to the `/locations/by-entity` endpoint which returns a list of locations associated with the specified entity ref.
-- **`location-fetch-by-id`**: Tracks `GET` requests to the `/locations/:id` endpoint which returns a location matching the specified location id.
+The Catalog backend emits audit events for various operations. Events are grouped logically by `eventId`, with `subEventId` providing further distinction within an operation group.
+
+**Entity Events:**
+
+- **`entity-fetch`**: Retrieves entities.
+
+  - **`all`**: Fetching all entities. (GET `/entities`)
+  - **`by-id`**: Fetching a single entity using its UID. (GET `/entities/by-uid/:uid`)
+  - **`by-name`**: Fetching a single entity using its kind, namespace, and name. (GET `/entities/by-name/:kind/:namespace/:name`)
+  - **`by-query`**: Fetching multiple entities using a filter query. (GET `/entities/by-query`)
+  - **`by-refs`**: Fetching a batch of entities by their entity refs. (POST `/entities/by-refs`)
+  - **`ancestry`**: Fetching the ancestry of an entity. (GET `/entities/by-name/:kind/:namespace/:name/ancestry`)
+
+- **`entity-mutate`**: Modifies entities.
+
+  - **`delete`**: Deleting a single entity. Note: this will not be a permanent deletion and the entity will be restored if the parent location is still present in the catalog. (DELETE `/entities/by-uid/:uid`)
+  - **`refresh`**: Scheduling an entity refresh. (POST `/entities/refresh`)
+
+- **`entity-validate`**: Validates an entity. (POST `/entities/validate`)
+
+- **`entity-facets`**: Retrieves entity facets. (GET `/entity-facets`)
+
+**Location Events:**
+
+- **`location-fetch`**: Retrieves locations.
+
+  - **`all`**: Fetching all locations. (GET `/locations`)
+  - **`by-id`**: Fetching a single location by ID. (GET `/locations/:id`)
+  - **`by-entity`**: Fetching locations associated with an entity ref. (GET `/locations/by-entity`)
+
+- **`location-mutate`**: Modifies locations.
+
+  - **`create`**: Creating a new location. (POST `/locations`)
+  - **`delete`**: Deleting a location and its associated entities. (DELETE `/locations/:id`)
+
+- **`location-analyze`**: Analyzes a location. (POST `/locations/analyze`)
 
 ## Links
 
diff --git a/plugins/catalog-backend/src/service/createRouter.ts b/plugins/catalog-backend/src/service/createRouter.ts
index 2842a806e2..8c0de3d221 100644
--- a/plugins/catalog-backend/src/service/createRouter.ts
+++ b/plugins/catalog-backend/src/service/createRouter.ts
@@ -128,7 +128,9 @@ export async function createRouter(
       const { authorizationToken, ...restBody } = req.body;
 
       const auditorEvent = await auditor?.createEvent({
-        eventId: 'refresh',
+        eventId: 'entity-mutate',
+        subEventId: 'refresh',
+        severityLevel: 'medium',
         meta: {
           entityRef: restBody.entityRef,
         },
@@ -162,7 +164,8 @@ export async function createRouter(
     router
       .get('/entities', async (req, res) => {
         const auditorEvent = await auditor?.createEvent({
-          eventId: 'CatalogEntityFetch',
+          eventId: 'entity-fetch',
+          subEventId: 'all',
           request: req,
         });
 
@@ -256,7 +259,8 @@ export async function createRouter(
       })
       .get('/entities/by-query', async (req, res) => {
         const auditorEvent = await auditor?.createEvent({
-          eventId: 'fetch-by-query',
+          eventId: 'entity-fetch',
+          subEventId: 'by-query',
           request: req,
         });
 
@@ -306,7 +310,8 @@ export async function createRouter(
         const { uid } = req.params;
 
         const auditorEvent = await auditor?.createEvent({
-          eventId: 'fetch-by-uid',
+          eventId: 'entity-fetch',
+          subEventId: 'by-uid',
           request: req,
           meta: {
             uid: uid,
@@ -337,7 +342,8 @@ export async function createRouter(
         const { uid } = req.params;
 
         const auditorEvent = await auditor?.createEvent({
-          eventId: 'delete',
+          eventId: 'entity-mutate',
+          subEventId: 'delete',
           severityLevel: 'medium',
           request: req,
           meta: {
@@ -365,7 +371,8 @@ export async function createRouter(
         const entityRef = stringifyEntityRef({ kind, namespace, name });
 
         const auditorEvent = await auditor?.createEvent({
-          eventId: 'fetch-by-name',
+          eventId: 'entity-fetch',
+          subEventId: 'by-name',
           request: req,
           meta: {
             entityRef: entityRef,
@@ -399,7 +406,8 @@ export async function createRouter(
           const entityRef = stringifyEntityRef({ kind, namespace, name });
 
           const auditorEvent = await auditor?.createEvent({
-            eventId: 'ancestry-fetch',
+            eventId: 'entity-fetch',
+            subEventId: 'ancestry',
             request: req,
             meta: {
               entityRef: entityRef,
@@ -434,7 +442,8 @@ export async function createRouter(
       )
       .post('/entities/by-refs', async (req, res) => {
         const auditorEvent = await auditor?.createEvent({
-          eventId: 'batch-fetch',
+          eventId: 'entity-fetch',
+          subEventId: 'by-refs',
           request: req,
         });
 
@@ -470,7 +479,7 @@ export async function createRouter(
       })
       .get('/entity-facets', async (req, res) => {
         const auditorEvent = await auditor?.createEvent({
-          eventId: 'facet-fetch',
+          eventId: 'entity-facets',
           request: req,
         });
 
@@ -500,7 +509,8 @@ export async function createRouter(
         const dryRun = yn(req.query.dryRun, { default: false });
 
         const auditorEvent = await auditor?.createEvent({
-          eventId: 'location-create',
+          eventId: 'location-mutate',
+          subEventId: 'create',
           severityLevel: dryRun ? 'low' : 'medium',
           request: req,
           meta: {
@@ -545,6 +555,7 @@ export async function createRouter(
       .get('/locations', async (req, res) => {
         const auditorEvent = await auditor?.createEvent({
           eventId: 'location-fetch',
+          subEventId: 'all',
           request: req,
         });
 
@@ -568,7 +579,8 @@ export async function createRouter(
         const { id } = req.params;
 
         const auditorEvent = await auditor?.createEvent({
-          eventId: 'location-fetch-by-id',
+          eventId: 'location-fetch',
+          subEventId: 'by-id',
           request: req,
           meta: {
             id: id,
@@ -598,7 +610,8 @@ export async function createRouter(
         const { id } = req.params;
 
         const auditorEvent = await auditor?.createEvent({
-          eventId: 'location-delete',
+          eventId: 'location-mutate',
+          subEventId: 'delete',
           severityLevel: 'medium',
           request: req,
           meta: {
@@ -628,7 +641,8 @@ export async function createRouter(
         const locationRef = `${kind}:${namespace}/${name}`;
 
         const auditorEvent = await auditor?.createEvent({
-          eventId: 'location-fetch-by-entity-ref',
+          eventId: 'location-fetch',
+          subEventId: 'by-entity',
           request: req,
           meta: {
             locationRef: locationRef,
@@ -713,7 +727,7 @@ export async function createRouter(
   if (orchestrator) {
     router.post('/validate-entity', async (req, res) => {
       const auditorEvent = await auditor?.createEvent({
-        eventId: 'validate',
+        eventId: 'entity-validate',
         request: req,
       });
 
diff --git a/plugins/scaffolder-backend/README.md b/plugins/scaffolder-backend/README.md
index e38296bd75..4a4281ec9c 100644
--- a/plugins/scaffolder-backend/README.md
+++ b/plugins/scaffolder-backend/README.md
@@ -66,15 +66,26 @@ catalog locations from the [create-app template](https://github.com/backstage/ba
 
 ## Audit Events
 
-- **`parameter-schema-fetch`**: Tracks`GET` requests to the `/v2/templates/:namespace/:kind/:name/parameter-schema` endpoint which return template parameter schemas
-- **`installed-actions-fetch`**: Tracks`GET` requests to the `/v2/actions` endpoint which grabs the list of installed actions
-- **`task-creation`**: Tracks`POST` requests to the `/v2/tasks` endpoint which creates tasks that the scaffolder executes
-- **`task-list-fetch`**: Tracks`GET` requests to the `/v2/tasks` endpoint which fetches details of all tasks in the scaffolder.
-- **`task-fetch`**: Tracks`GET` requests to the `/v2/tasks/:taskId` endpoint which fetches details of a specified task `:taskId`
-- **`task-cancellation`**: Tracks`POST` requests to the `/v2/tasks/:taskId/cancel` endpoint which cancels a running task
-- **`task-retry`**: Tracks`POST` requests to the `/v2/tasks/:taskId/retry` endpoint which retries a failed task
-- **`task-stream`**: Tracks`GET` requests to the `/v2/tasks/:taskId/eventstream` endpoint which returns an event stream of the task logs of task `:taskId`
-- **`task-event-fetch`**: Tracks`GET` requests to the `/v2/tasks/:taskId/events` endpoint which returns a snapshot of the task logs of task `:taskId`
-- **`task-dry-run`**: Tracks`POST` requests to the `/v2/dry-run` endpoint which creates a dry-run task. All audit logs for events associated with dry runs have the `meta.isDryLog` flag set to `true`.
-- **`stale-task-cancellation`**: Tracks automated cancellation of stale tasks
-- **`task-execution`**: Tracks the`initiation` and `completion` of a real scaffolder task execution (will not occur during dry runs)
+The Scaffolder backend emits audit events for various operations. Events are grouped logically by `eventId`, with `subEventId` providing further distinction when needed.
+
+**Template Events:**
+
+- **`template-parameter-schema`**: Retrieves template parameter schemas. (GET `/v2/templates/:namespace/:kind/:name/parameter-schema`)
+
+**Action Events:**
+
+- **`action-fetch`**: Retrieves installed actions. (GET `/v2/actions`)
+
+**Task Events:**
+
+- **`task`**: Operations related to Scaffolder tasks.
+  - **`create`**: Creates a new task. (POST `/v2/tasks`)
+  - **`list`**: Fetches details of all tasks. (GET `/v2/tasks`)
+  - **`get`**: Fetches details of a specific task. (GET `/v2/tasks/:taskId`)
+  - **`cancel`**: Cancels a running task. (POST `/v2/tasks/:taskId/cancel`)
+  - **`retry`**: Retries a failed task. (POST `/v2/tasks/:taskId/retry`)
+  - **`stream`**: Retrieves a stream of task logs. (GET `/v2/tasks/:taskId/eventstream`)
+  - **`events`**: Retrieves a snapshot of task logs. (GET `/v2/tasks/:taskId/events`)
+  - **`dry-run`**: Creates a dry-run task. (POST `/v2/dry-run`) All audit logs for events associated with dry runs have the `meta.isDryLog` flag set to `true`.
+  - **`stale-cancel`**: Automated cancellation of stale tasks.
+  - **`execute`**: Tracks the initiation and completion of a real scaffolder task execution. This event will not occur during dry runs.
diff --git a/plugins/scaffolder-backend/src/scaffolder/tasks/StorageTaskBroker.ts b/plugins/scaffolder-backend/src/scaffolder/tasks/StorageTaskBroker.ts
index a772f6e114..56a395106a 100644
--- a/plugins/scaffolder-backend/src/scaffolder/tasks/StorageTaskBroker.ts
+++ b/plugins/scaffolder-backend/src/scaffolder/tasks/StorageTaskBroker.ts
@@ -40,9 +40,9 @@ import {
 } from '@backstage/types';
 import { Logger } from 'winston';
 import ObservableImpl from 'zen-observable';
+import { DefaultWorkspaceService, WorkspaceService } from './WorkspaceService';
 import { readDuration } from './helper';
 import { InternalTaskSecrets, TaskStore } from './types';
-import { DefaultWorkspaceService, WorkspaceService } from './WorkspaceService';
 
 type TaskState = {
   checkpoints: {
@@ -206,7 +206,8 @@ export class TaskManager implements TaskContext {
     }
 
     const auditorEvent = await this.auditor?.createEvent({
-      eventId: 'task-execution',
+      eventId: 'task',
+      subEventId: 'execution',
       severityLevel: 'medium',
       meta: {
         taskId: this.task.taskId,
@@ -472,7 +473,8 @@ export class StorageTaskBroker implements TaskBroker {
     await Promise.all(
       tasks.map(async task => {
         const auditorEvent = await this.auditor?.createEvent({
-          eventId: 'stale-task-cancellation',
+          eventId: 'task',
+          subEventId: 'stale-cancel',
           severityLevel: 'medium',
           meta: {
             taskId: task.taskId,
diff --git a/plugins/scaffolder-backend/src/scaffolder/tasks/TaskWorker.ts b/plugins/scaffolder-backend/src/scaffolder/tasks/TaskWorker.ts
index 089e58360c..944fa9b6ac 100644
--- a/plugins/scaffolder-backend/src/scaffolder/tasks/TaskWorker.ts
+++ b/plugins/scaffolder-backend/src/scaffolder/tasks/TaskWorker.ts
@@ -175,7 +175,8 @@ export class TaskWorker {
 
   async runOneTask(task: TaskContext) {
     await this.auditor?.createEvent({
-      eventId: 'task-execution',
+      eventId: 'task',
+      subEventId: 'execution',
       severityLevel: 'medium',
       meta: {
         taskId: task.taskId,
diff --git a/plugins/scaffolder-backend/src/service/router.ts b/plugins/scaffolder-backend/src/service/router.ts
index 270d532090..66ad2a7350 100644
--- a/plugins/scaffolder-backend/src/service/router.ts
+++ b/plugins/scaffolder-backend/src/service/router.ts
@@ -462,7 +462,7 @@ export async function createRouter(
         const requestedTemplateRef = `${req.params.kind}:${req.params.namespace}/${req.params.name}`;
 
         const auditorEvent = await auditor?.createEvent({
-          eventId: 'parameter-schema-fetch',
+          eventId: 'template-parameter-schema',
           request: req,
           meta: { templateRef: requestedTemplateRef },
         });
@@ -512,7 +512,7 @@ export async function createRouter(
     )
     .get('/v2/actions', async (req, res) => {
       const auditorEvent = await auditor?.createEvent({
-        eventId: 'installed-actions-fetch',
+        eventId: 'action-fetch',
         request: req,
       });
 
@@ -541,7 +541,8 @@ export async function createRouter(
       });
 
       const auditorEvent = await auditor?.createEvent({
-        eventId: 'installed-actions-fetch',
+        eventId: 'task',
+        subEventId: 'create',
         severityLevel: 'medium',
         request: req,
         meta: {
@@ -646,7 +647,8 @@ export async function createRouter(
     })
     .get('/v2/tasks', async (req, res) => {
       const auditorEvent = await auditor?.createEvent({
-        eventId: 'task-list-fetch',
+        eventId: 'task',
+        subEventId: 'list',
         request: req,
       });
 
@@ -708,7 +710,8 @@ export async function createRouter(
       const { taskId } = req.params;
 
       const auditorEvent = await auditor?.createEvent({
-        eventId: 'task-fetch',
+        eventId: 'task',
+        subEventId: 'get',
         request: req,
         meta: {
           taskId: taskId,
@@ -742,7 +745,8 @@ export async function createRouter(
       const { taskId } = req.params;
 
       const auditorEvent = await auditor?.createEvent({
-        eventId: 'task-cancellation',
+        eventId: 'task',
+        subEventId: 'cancel',
         severityLevel: 'medium',
         request: req,
         meta: { taskId: taskId },
@@ -771,7 +775,8 @@ export async function createRouter(
       const { taskId } = req.params;
 
       const auditorEvent = await auditor?.createEvent({
-        eventId: 'task-retry',
+        eventId: 'task',
+        subEventId: 'retry',
         severityLevel: 'medium',
         request: req,
         meta: { taskId: taskId },
@@ -799,7 +804,8 @@ export async function createRouter(
       const { taskId } = req.params;
 
       const auditorEvent = await auditor?.createEvent({
-        eventId: 'task-stream',
+        eventId: 'task',
+        subEventId: 'stream',
         request: req,
         meta: { taskId: taskId },
       });
@@ -868,7 +874,8 @@ export async function createRouter(
       const { taskId } = req.params;
 
       const auditorEvent = await auditor?.createEvent({
-        eventId: 'task-event-fetch',
+        eventId: 'task',
+        subEventId: 'events',
         request: req,
         meta: {
           taskId: taskId,
@@ -919,7 +926,8 @@ export async function createRouter(
     })
     .post('/v2/dry-run', async (req, res) => {
       const auditorEvent = await auditor?.createEvent({
-        eventId: 'task-dry-run',
+        eventId: 'task',
+        subEventId: 'dry-run',
         request: req,
       });