[O365] Update the mapping of ECS `message` field for `ComplianceDLPExchange` events #14587

moxarth-rathod · 2025-07-18T11:59:11Z

Proposed commit message

office_365: populate ECS message field with alert titles from ComplianceDLPExchange 

This PR updates the mapping of message ECS field for the ComplianceDLPExchange events
from mixture of o365 fields.

Checklist

I have reviewed tips for building integrations and this pull request is aligned with them.
I have verified that all data streams collect metrics or logs.
I have added an entry to my package's changelog.yml file.
I have verified that Kibana version constraints are current according to guidelines.
I have verified that any added dashboard complies with Kibana's Dashboard good practices

How to test this PR locally

Clone integrations repo.
Install elastic package locally.
Start elastic stack using elastic-package.
Move to integrations/packages/o365 directory.
Run the following command to run tests.

elastic-package test

Related issues

Closes [Office365] Populate ECS message Field with Alert Titles for DLP Exchange Alerts #12598

…events

elasticmachine · 2025-07-18T11:59:41Z

Pinging @elastic/security-service-integrations (Team:Security-Service Integrations)

ShourieG · 2025-07-21T09:58:33Z

packages/o365/changelog.yml

- version: "2.18.6"
+- version: "2.19.0"
  changes:
-    - description: Stricter enforcement of maximum age limits.
-      type: bugfix
-      link: https://github.com/elastic/integrations/pull/14567
+    - description: Populate `message` field from the O365 Audit Log fields instead of `Subject` field in ComplianceDLPExchange events to better reflect Alert Titles.
+      type: enhancement
+      link: https://github.com/elastic/integrations/pull/14587


why are we replacing an existing changelog ?

Oh, this is happened because #14567 was merged after i raised this PR. Need to take pull from main.

packages/o365/changelog.yml

packages/o365/data_stream/audit/elasticsearch/ingest_pipeline/default.yml

kcreddy

Please update README as per CI error:

 | o365.audit.ExchangeMetaData.Sent |  | date |
+| o365.audit.ExchangeMetaData.Subject |  | ketword |
 | o365.audit.ExchangeMetaData.To |  | keyword |

Error: checking package failed: checking readme files are up-to-date failed: files do not match
[o365] run_tests_package failed

ShourieG · 2025-07-21T10:04:57Z

packages/o365/data_stream/audit/elasticsearch/ingest_pipeline/default.yml

+        def operation = ctx.event?.action != null ? ctx.event.action : ctx.o365audit?.Operation;
+        def user = ctx.user?.id != null ? ctx.user.id : ctx.o365audit?.UserId;
+        def subject = ctx.o365audit?.ExchangeMetaData?.Subject != null ? ctx.o365audit.ExchangeMetaData.Subject : (ctx.email?.subject != null ? ctx.email.subject : '');


One query here,

In scenarios when ctx.event.action == null, ctx.user.id == null and ctx.o365audit.ExchangeMetaData?.Subject == null are we guaranteed to have the alternatives populated ? If not, we might end up with an incomplete message with the current logic.

@kcreddy, what do you think, should we have a fallback message just in-case ?

I think it might be worth to have <unknown>. But I will leave it to @raqueltabuyo to confirm.
Also waiting for #14587 (comment)

If everything is null, I would change the message to "Office365 Alert", without giving additional details as the rest is unknown, but we still alert the user of the existence of a suspicious behavior in their O365 environment.

elastic-vault-github-plugin-prod · 2025-07-21T11:32:50Z

🚀 Benchmarks report

To see the full report comment with /test benchmark fullreport

efd6 · 2025-07-25T03:27:14Z

packages/o365/data_stream/audit/elasticsearch/ingest_pipeline/default.yml

+      source: >
+        def operation = ctx.event?.action;
+        def user = ctx.user?.id;
+        def subject = ctx.o365audit?.ExchangeMetaData?.Subject != null ? ctx.o365audit.ExchangeMetaData.Subject : (ctx.email?.subject != null ? ctx.email.subject : '');


This kind of density is why ternaries are problematic.

If this must be done, suggest instead the slightly less unpleasant:

def subject = ctx.o365audit?.ExchangeMetaData?.Subject ?: (ctx.email?.subject != null ? ctx.email.subject : '');

elasticmachine · 2025-07-31T10:51:19Z

💚 Build Succeeded

Buildkite Build
Commit: caeaad5

History

💚 Build #29056 succeeded 3e41680
💚 Build #28970 succeeded 3d9ef9c
💔 Build #28969 failed f8ae6e9
💚 Build #28813 succeeded bd49309
💚 Build #28810 succeeded b51abad
💔 Build #28807 failed 42fcc75

cc @moxarth-rathod

elastic-sonarqube · 2025-07-31T10:51:25Z

Quality Gate passed

Issues
0 New issues
0 Fixed issues
0 Accepted issues

Measures
0 Security Hotspots
100.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube

kcreddy

LGTM for my comments.

raqueltabuyo

LGTM

elastic-vault-github-plugin-prod · 2025-08-01T06:08:27Z

Package o365 - 2.19.0 containing this change is available at https://epr.elastic.co/package/o365/2.19.0/

…change` events (elastic#14587) This PR updates the mapping of message ECS field for the ComplianceDLPExchange events from mixture of o365 fields.

[O365] Update the mapping of message field for ComplianceDLPExchange …

122219b

…events

moxarth-rathod requested a review from a team as a code owner July 18, 2025 11:59

moxarth-rathod self-assigned this Jul 18, 2025

moxarth-rathod added 2 commits July 18, 2025 18:17

Add PR link to changelog

9c7b681

fix data type for ExchangeMetaData.Subject field

42fcc75

ShourieG reviewed Jul 21, 2025

View reviewed changes

kcreddy reviewed Jul 21, 2025

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ShourieG reviewed Jul 21, 2025

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Pull from main and address PR comments

b51abad

andrewkroh added the documentation Improvements or additions to documentation. Applied to PRs that modify *.md files. label Jul 21, 2025

moxarth-rathod added 3 commits July 21, 2025 17:37

Remove unnecessary on_failure block from the script processor

bd49309

Update changelog for older versions

f8ae6e9

resolve merge conflicts

3d9ef9c

efd6 reviewed Jul 25, 2025

View reviewed changes

moxarth-rathod added 2 commits July 25, 2025 10:58

Update the turnary operation for subject value

3e41680

Update message if each field is null

caeaad5

moxarth-rathod requested review from ShourieG, efd6, kcreddy and raqueltabuyo July 31, 2025 10:24

kcreddy approved these changes Jul 31, 2025

View reviewed changes

raqueltabuyo approved these changes Jul 31, 2025

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efd6 approved these changes Jul 31, 2025

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moxarth-rathod merged commit dd1b1f7 into elastic:main Aug 1, 2025
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[O365] Update the mapping of ECS message field for ComplianceDLPExchange events #14587

[O365] Update the mapping of ECS message field for ComplianceDLPExchange events #14587

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[O365] Update the mapping of ECS `message` field for `ComplianceDLPExchange` events #14587

[O365] Update the mapping of ECS `message` field for `ComplianceDLPExchange` events #14587

moxarth-rathod commented Jul 18, 2025 •

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ShourieG Jul 21, 2025 •

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elastic-vault-github-plugin-prod bot commented Jul 21, 2025 •

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